DNV-CG-0170 Offshore classification projects - testing and ...

CLASS GUIDELINE

DNV-CG-0170 Edition October 2021

Offshore classification projects - testingand commissioning

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DNV AS

FOREWORD

DNV class guidelines contain methods, technical requirements, principles and acceptance criteriarelated to classed objects as referred to from the rules.

© DNV AS October 2021

Any comments may be sent by e-mail to [email protected]

This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by other parties than DNV is at the user's sole risk. Unless otherwise stated in an applicable contract,or following from mandatory law, the liability of DNV AS, its parent companies and subsidiaries as well as their officers, directors andemployees (“DNV”) for proved loss or damage arising from or in connection with any act or omission of DNV, whether in contract or in tort(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.

CHANGES – CURRENT

This document supersedes the July 2015 edition of DNVGL-CG-0170.The numbering and/or title of items containing changes is highlighted in red.

Changes October 2021

Topic Reference Description

Rebranding to DNV All This document has been revised due to the rebranding of DNVGL to DNV. The following have been updated: the companyname, material and certificate designations, and references toother documents in the DNV portfolio. Some of the documentsreferred to may not yet have been rebranded. If so, please seethe relevant DNV GL document. No technical content has beenchanged.

Editorial correctionsIn addition to the above stated changes, editorial corrections may have been made.

Changes - current

Class guideline — DNV-CG-0170. Edition October 2021 Offshore classification projects - testing and commissioning

DNV AS

CONTENTS

Changes – current.................................................................................................. 3

Section 1 Introduction............................................................................................ 71 Preamble..............................................................................................72 General................................................................................................ 73 Objective..............................................................................................74 Scope and application..........................................................................75 Structure of this document..................................................................76 How to use this document...................................................................87 References........................................................................................... 88 Abbreviations.......................................................................................8

Section 2 Commissioning process and definition of various stages.......................111 Introduction.......................................................................................112 Detailed design..................................................................................113 Mechanical completion.......................................................................12

Section 3 Pre-commissioning................................................................................ 131 Introduction.......................................................................................132 Commissioning...................................................................................133 Integration testing............................................................................ 134 Marine sea trial................................................................................. 145 Delivery..............................................................................................146 Hook up............................................................................................. 147 Operation........................................................................................... 15

Section 4 Commissioning procedures....................................................................161 .......................................................................................................... 16

Section 5 DNV involvement in commissioning...................................................... 181 .......................................................................................................... 18

Section 6 Safety, health and environment............................................................ 191 .......................................................................................................... 19

Appendix A Typical survey categorization for drillships during mechanicalcompletion and commissioning of marine and drilling systems............................ 20

1 Category I systems for commissioning (for integration)....................202 Category II systems for commissioning (for integration).................. 20

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3 Category I systems for commissioning (as independent systems)..... 214 Category II systems for commissioning (as independent systems)....215 Category III systems for commissioning (as independent system)....24

Appendix B Typical survey categorization for semi-submersible units duringmechanical completion and commissioning of marine and drilling systems.......... 26

1 Category I systems for commissioning (for integration)....................262 Category II systems for commissioning (for integration).................. 273 Category I systems for commissioning (as independent systems)..... 274 Category II systems for commissioning (as independent systems)....275 Category III systems for commissioning (as independent system)....30

Appendix C Typical survey categorization for “jack-up” units during mechanicalcompletion and commissioning of marine and drilling systems............................ 32


Appendix D Typical survey categorization for FPSO units during mechanicalcompletion and commissioning of marine and production systems.......................37


Appendix E Typical survey categorization for FSO units during mechanicalcompletion and commissioning of marine and production systems.......................43

1 Category 1 systems for commissioning (for integration)................... 432 Category II systems for commissioning (for integration).................. 433 Category I systems for commissioning (as independent systems)..... 444 Category II systems for commissioning (as independent systems)....455 Category III systems for commissioning (as independent system)....466 Category I systems for commissioning (class notation CRANE)......... 47

Appendix F DNV requirements related to marine, utility and safety systems........ 481 Stability and watertight integrity...................................................... 482 Fabrication and testing of offshore structures...................................503 Marine and machinery systems and equipment................................. 534 Electrical installations........................................................................63

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5 Instrumentation and telecommunication systems............................. 776 Fire protection systems..................................................................... 827 Vessel operations.............................................................................. 87

Appendix G Survey scope for specific class notations...........................................921 DNV survey scope for DRILL............................................................. 922 DNV survey scope for PROD............................................................ 104

Changes – historic.............................................................................................. 116

Contents


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SECTION 1 INTRODUCTION

1 PreambleThis class guideline (CG) outlines the general best practices that lead to effective testing and commissioningof marine and industrial systems onboard mobile offshore units in newbuilding projects. For convenience,an extract of all DNV rules related to testing and commissioning of marine and industrial systems havebeen included in this document. It should be noted that for more accurate applicable statutory and classrequirements related to testing and commissioning, applicable versions of the statutory and class rules asspecified in the contract shall be referred to. System categorizations included in the appendix are generalin nature and may not include all applicable systems that are specific to particular newbuilding projects andso, this document should be used only as a guide. This document currently includes requirements related todrilling units with the intention to include requirements related to other object types at a later stage.

2 GeneralDNV has recognized that the technical complexity of modern Offshore Installations is increasing due tosystems becoming more complex, more automated and more tightly integrated. This evolution providesdesigners, shipyards, owners and other involved parties challenges in the management of testing andcommissioning equipment and systems onboard offshore units successfully.

3 ObjectiveThis CG outlines recommended work processes for the testing and commissioning activities on offshorenewbuild units. This document shall be read as a guide to testing and commissioning equipment and systemsonboard offshore Units. The document will help users in preparing or carrying out witnessing of testing andcommissioning activities to satisfy the requirements of classification and applicable statutory regulationswhere DNV has delegation from such authorities.It should be noted that final acceptance of commissioning is the owner's responsibility. This CG only coversclass and statutory related activities.

4 Scope and applicationThis guide is applicable to testing and commissioning activities onboard classed mobile offshore units e.g.,drilling, accommodation and FPSOs.

5 Structure of this documentThis document contains:

— A general overview of testing and commissioning activities together with samples of typical contents oftesting and commissioning procedures including the ones for integration testing and commissioning.

— Extract of applicable DNV rules for classification of offshore units (rules for offshore units) and DNVoffshore standards related to preparation, testing and commissioning of various marine, utility andindustrial systems.

— Categorization of marine, utility and industrial systems that can be used to decide on the extent ofinvolvement from various stakeholders.

This CG can be used as a check list for reviewing commissioning procedures to assist preparation ofrequirements related to class and applicable statutory regulations.

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6 How to use this documentThe main function of this CG is to ensure that the commissioning procedures contain all the relevantinformation required by the applicable DNV rules for offshore units and DNV offshore standards.If the commissioning procedures are reviewed against this document, they should contain all the requiredinformation to ensure compliance with the various offshore standards thus ensuring that testing andcommissioning activities are fully in compliance with the required classification requirements.

7 ReferencesInformation and requirements provided in this CG are extracted from the following DNV rules for offshoreunits, offshore standards and rules for classification of ships (Rules for ships):

Table 1 DNV rules for offshore units, offshore standards and rules for classification of ships (rulesfor ships)

References Title

DNV-RU-OU-0101 Offshore drilling and support units

DNV-RU-OU-0102 Floating production, storage and loading units

DNV-OS-A101 Safety principles and arrangements

DNV-OS-C301 Stability and watertight integrity

DNV-OS-C401 Fabrication and testing of offshore structures

DNV-OS-D101 Marine and machinery systems and equipment

DNV-OS-D201 Electrical installations

DNV-OS-D202 Automation, safety, and telecommunication systems

DNV-OS-D301 Fire protection

DNV-OS-E101 Drilling plant

DNV-OS-E201 Oil and gas processing systems

DNV Rules for Ships Pt.4 Ch.2, Ch.3, Ch.7, Ch.8, and Ch.14 / Pt.5 Ch.3 / Pt.6 Ch.3.

8 AbbreviationsTable 2 Abbreviations

Abbreviation Description

AC alternating current

BOP blow out preventer

CSG casing

DAT digital audio tape

DB distribution board

DC direct current

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DDM derrick drilling machine

DFMA design for manufacture and assembly

DP dynamic positioning

DPS dynamic positioning system

E0 unmanned machinery space alarm

ESD emergency shut down

F&G fire & gas (systems)

FPSO floating production, storage and offloading (unit)

FSO floating storage and offloading (unit)

FW fresh water

GMDSS global maritime distress safety system

HP high pressure

HPU hydraulic power unit

HVAC heating, ventilation and air conditioning

ICCP impressed current cathodic protection

ICMS integrated control and management system

ICSS integrated control and safety system

LER local electrical room

LIR local instrument room

LMRP lower marine riser package

LP low pressure

LQ living quarter

LV low voltage

MC mechanical completion

MCC main control center

MGPS marine growth protection system

P&ID piping & instrument diagram

PA/GA public address / general alarm

PABX private automatic branch exchange (telephone system)

PCR process control room

PMS power management system

PSD process shut down

QA quality assurance

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QC quality control

QSP quality survey plan

SIT system integration test

SWBD switchboard

TA/ATA thruster assisted/ automatic thruster assisted

UPS uninterruptable power supply

VDU visual display unit

VFD variable frequency drive

WHC wellhead control system

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SECTION 2 COMMISSIONING PROCESS AND DEFINITION OFVARIOUS STAGES

1 Introduction

Commissioning of an offshore unit is a time consuming and complex process. A structured approach isa necessity for a successful commissioning phase of the newbuilding projects. While the requirementsfor the testing and commissioning are clearly specified in various applicable DNV standards, how exactlythe commissioning activities should be carried out is largely left to the Builder/Owners of the mobileoffshore units. For instance, there will be dependencies between the different packages. It is, however,a DNV requirement to see that the testing requirements mentioned in our rules are carried out duringcommissioning. It is often required by DNV offshore standards that the equipment is to be tested in “asinstalled” condition. So, though similar tests have already been carried out during a factory acceptance test(FAT), a new test in installed condition would be required. A typical example could be the offshore cranes.They will probably be overload tested during FAT, but they will still be necessary to overload test in installedcondition.Before commissioning starts the responsible DNV surveyor and all stakeholders involved in preparing andcarrying out the testing and commissioning should also have an idea as to what activities are consideredmost important to DNV and also what activities are not within the DNV scope. During commissioning it is alsoimportant to be aware that the owner’s and the yard’s viewpoint as to what is DNV’s scope of work may notbe in harmony with the scope required by the DNV Offshore standards. It is also important to recognize thatowner/yard may have additional requirements e.g., related to performance or additional functionality, thatmay be over and above the classification requirements of DNV.

2 Detailed designWhen entering into the final stages of any project, the detailed design is expected to be fully completed,reviewed and approved. Failure to complete the design in a satisfactory manner may undermine alreadycompleted testing and commissioning, especially comments that may result in redesigning component orsystems. Any duplication in redoing testing and commissioning is not very efficient and will result in loss of

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valuable time and additional cost. The preferred solution would be to have the design engineers availableduring the commissioning stages. The design engineer can then confirm completion of the design activitiesand advise what needs to be rectified, redesigned and followed up.

3 Mechanical completionFor most offshore projects mechanical completion (MC) is considered a natural and a logical step on theway towards proper project completion. It is normal for the builder or system vendor to create mechanicalcompletion check lists for the actual equipment or system. Only some parts of mechanical completion iscovered in the DNV Offshore standards and is thus formally DNV scope of work. DNV generally maintainoversight of most of the mechanical completion activities of the project through unscheduled surveys. Whereit is mandated by the quality survey plan (QSP), a DNV surveyor may attend certain mechanical completionactivities. Some of the examples of such activities are:

— pressure testing of piping— installation of main engines/alignment— cable installation / segregation of cables.

In this instruction, MC is completed when construction and installation of equipment, piping, instrumentation,cabling, electrical equipment, etc. have been demonstrated as physically complete. Dynamic tests are limitedto non-energised tests like cold alignment of shafting for motors, engines and generators. Further meggertests, flushing and drying of piping systems, cleaning, etc. is included in this milestone. Typically, the MCwill result in a number of outstanding activities that must be rectified before any actual pre-commissioning,testing and commissioning can commence. Normal findings typically include missing electrical equipmentgrounding, lack of proper shielding of fuel pipes or hot surfaces, insufficient nozzle coverage for delugesystems, etc. The evidence of the required certification of equipment should be verified during mechanicalcompletion stage so that there are no surprises before commencing pre-commissioning, testing andcommissioning stages. Failure to do so may jeopardize the safety of such activities.

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SECTION 3 PRE-COMMISSIONING

1 IntroductionPre-commissioning is the stage before commissioning which involves the verification of functional operabilityof the equipment part or full systems. This stage of testing requires energising of equipment and introductionof fluids in fluid piping systems. This is the stage where the vendor and/or the yard are carrying outindependent testing of the equipment/system. This is a “trial and error” phase where class normally do notattend. During review and approval of commissioning procedures, it is important for the DNV surveyor tomake sure that tests required by the rules are carried out during the commissioning phase. It may be achallenge when the tests required by the rules are carried out during pre-commissioning but not attendedby a DNV surveyor. This should be highlighted during the review of the commissioning procedures. Pre-commissioning would typically include:

— Loop testing.— Motor no load runs.— Equipment final alignments.

2 CommissioningThe phase after mechanical completion, pre commissioning and testing is often referred to as thecommissioning phase. The “commissioning of an offshore unit” is a very wide term and for the purpose ofclassification, it refers to final checks, inspection and tests that every operational component or system goesthrough to confirm operational readiness. Typically equipment/system commissioning will consist of:

— Functional testing of systems by start-up priority.— Testing of ESD/PSD and F&G.— Load tests and other equipment performance testing.

In the commissioning phase it will be verified that the installed equipment and system are working asintended and that the rule requirements for the various equipment/system functionality are met. The ruleswill have requirements for “performance”, e.g. number of starts for starting air receivers and “functionality”,e.g. safety functions of boilers and incinerators.For effective commissioning, it is important that the testing and commissioning of the different skids/packages are given the right priority so that they happen in the right sequence/order. Very littlecommissioning can be performed without the hydraulic ring line, power system, cooling water, pneumaticsystems and other utilities being functional and working properly. Typically, temporary arrangements shouldnot be accepted for commissioning. It should also be a general principle that commissioned equipment is notdismantled or modified after testing and commissioning of the equipment/system is completed. Once theequipment/system is tested and commissioning is completed it is good practice to have a close out meetingwhere the commissioning procedures are signed, by owner and outstanding punch items are agreed.

3 Integration testingIntegration testing is a collective term for testing and commissioning of more than one system (a collectionof systems, sub-systems and equipment packages) to ensure compliance with project requirements.Many systems onboard are integrated with other systems in one way or another. However, in this context,integration testing is meant to cover the following but not limited to:

— Complete functional testing of systems across equipment boundaries.— Final adjustments of alarm-limits, measuring instruments.— End to end testing of ESD/PSD and F&G.— Integrated testing of PROD/DRILL plants.

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Many of the system integration tests are often carried out during the marine sea trial as all the relevantsystems and consumers may be required to be ready for such tests to be carried out. The trials can also beorganised e.g. with one drilling trial and one marine sea trial.

4 Marine sea trialThe marine sea trials typically focuses on propulsion, steering and utility systems functioning under normaloperating conditions. A prerequisite for sea trials is that the major safety systems like fire fighting, life-savingappliances, PA/GA, HVAC, etc. are satisfactorily commissioned ahead of sea trials. In addition, the incliningtest should be completed prior to taking the unit out on sea trial.Sea trials are conducted to test a vessels performance and general seaworthiness. Testing of a vesselsspeed, manoeuvrability, equipment and safety features are usually conducted during sea trial. However, thisdemonstration of speed and manoeuvrability, etc. is normally more important for a merchant vessel thanan offshore unit. A merchant vessel will typically have a contract speed as part of the contract between thebuilder and the owner. That is seldom the case for an offshore unit. The marine sea trial will typically consistof but not limited to:

— testing of Dynamic Positioning System— final commissioning of Ballast systems, Cooling water, Lube oil, Fuel Oil, HVAC, Thrusters, etc.— speed test— crash stop— turning test— E0 test (Unmanned machinery space alarms)— endurance test.

The marine sea trial is normally not relevant for fixed units or units without propulsion.

5 DeliveryDepending on type of unit, the successful completion of all testing and commissioning activities will triggerthe delivery of the unit. The level of completion will however vary from project to project. Typically a projectwith a contract in place and a long transit to the operation area, the owner may prefer an early delivery withthe intention to close some of the outstanding items in transit. If a unit does not have a project in place, theowner will typically aim for a higher level of completion before they will accept the unit. Equipment subjectto class approval that is not readily commissioned in accordance with approved testing and commissioningprocedures should be identified in the delivery documentation by issuance of relevant conditions of class.It should be evaluated prior to delivery whether the outstanding class and statutory systems are minorin nature and does not affect the safety and integrity of the unit that will allow the Class Society to issueappropriate Class and Statutory Certificates. If critical systems e.g., fire fighting/detection, propulsion andsteering, life-saving appliances, navigational aids, etc. are not commissioned, Class and Statutory Certificatesare not typically issued.

6 Hook upHook up is mostly relevant for fixed units like FPSOs and other units that will stay on the same locationfor a number of years, however some drilling units may require some testing of systems on first location.Typically it means the hook up of risers to the unit and preparations required prior to first oil. Many of thevital commissioning activities for such units will have to take place at location and cannot be completedduring the construction of the unit. Hook up is not typically included in the class scope but if safety andintegrity of the vessel is in question, Class Society typically evaluates the status of such operation.

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7 OperationOnce the unit is in operation, there should not be any major outstanding class and statutory items carriedover from the newbuilding phase and procedures related to “units in operation” requirements should befollowed.

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SECTION 4 COMMISSIONING PROCEDURES

1 Two types of procedures are normally submitted for review / approval:

— system or equipment commissioning— integration testing.

Typical examples of the contents list of these procedures are shown in the Figure 1 and Figure 2 below.

Figure 1 Typical content for a system commissioning procedure

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Figure 2 Typical content for a system integration test procedure

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SECTION 5 DNV INVOLVEMENT IN COMMISSIONING

1 DNV’s involvement in testing and commissioning is limited to the requirements of statutory and class rules.DNV surveyor will attend testing and commissioning to the extent specified in applicable quality surveyprogram (QSP).Survey scope shall be categorized as follows:

— Survey Category 1 - Statutory and Essential Systems for Safety (normally increased attendance by DNV).— Survey Category 2 - Main Systems / Functionally Important (For Main and Additional Class Notations,extent is based on the yard’s experience and the effectiveness of Yard’s QA/QC system).

— Survey Category 3 – Normally limited or no attendance required by surveyor.

The tables attached in the following appendices detail the “survey categorization during MechanicalCompletion and Commissioning of Marine and Drilling Systems” (based on Project System / Sub SystemList).

Drillships App.A

Semi-submersible units App.B

Jack ups App.C

FPSO App.D

FSO App.E

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SECTION 6 SAFETY, HEALTH AND ENVIRONMENT

1 It is important to note that commissioning activities may introduce additional hazards to the process thatmay not have been considered in the design phase i.e. the use of alternative media for testing in the absenceof hydrocarbons. When evaluating extent of checks and tests the philosophy of Primum non nocere or first dono harm should be considered.It should also be noted that the commissioning activities themselves may also introduce additional risksand hazards into the workplace. Prior to start of any commissioning the relevant safe job analysis should beperformed where relevant dangers are highlighted and sufficient efforts are taken to minimize the risks.It is important to ensure responsibilities are clearly defined and recognised; that there are suitable andsufficient instructions e.g. procedures, method statements, workpacks; whether control and supervision ofstaff and contractors is adequate; whether arrangements for calibration of any test equipment associatedwith commissioning is adequate; there is adequate control of temporary commissioning aids e.g. E&Ihardwired links, isolations, spades in process lines.

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APPENDIX A TYPICAL SURVEY CATEGORIZATION FOR DRILLSHIPSDURING MECHANICAL COMPLETION AND COMMISSIONING OFMARINE AND DRILLING SYSTEMS

1 Category I systems for commissioning (for integration)No. Name of the system Integrated with

1 Fire Main System F&G/Deluge/control

2 Inergen System F&G/HVAC/PA

3 Fire Water Deluge System F&G

4 Main Diesel Generator PMS&S/T&DP

5 Seawater Cooling System Consumer Capacity Test

6 Thruster Seawater Cooling System SIT

7 Thruster S/T

8 11Kv Switchboard (or equivalent) PMS

9 690V HPU MCC (or equivalent) SIT

10 690V Drilling VFD Switchboard (or equivalent) SIT

11 690V Thruster VFD Switchboard (or equivalent) DP/PMS

12 230V AC UPS (or equivalent) ESD

13 230V AC UPS Battery (or equivalent) ESD

14 230V AC UPS Main Distribution Board (or equivalent) ESD

15 230V AC UPS DB (or equivalent) ESD

16 ICMS, Fire and Gas, ESD and DP with Sensor and Reference System ESD/HVAC

17 Telecom System ESD

18 Electrical and Auxiliary Machinery Rooms Ventilation Systems ESD

19 Engine Rooms Ventilation Systems ESD

20 Port/Stbd/Aft Machinery Rooms Ventilation Systems ESD

21 LQ HVAC ESD

22 Power Management System DRILL/DP

23 Dynamic Positioning System Test (DPS) CONTROL

24 Machinery Unmanned Test E0

2 Category II systems for commissioning (for integration)No. Name of the system Integrated with

1 Ballast System Semi Recovery Test

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No. Name of the system Integrated with

2 Aux. Cooling F.W. System S/T and SIT

3 460V LV Switchboard S/T


5 PA Coverage Measurement Normal Operation (machinery Running)

3 Category I systems for commissioning (as independent systems)No. Name of the system

1 Lifeboat and Launch System

2 Fast Rescue Craft Launch Device System

3 Deck Crane

4 Emergency bilge system

5 Emergency Shut Off System (Quick closing valves)

6 Drill Floor Elevator

7 Escape Chute

8 Watertight Doors

9 Helideck Fire-Fighting System

10 Emergency Generator

11 Emergency Switchboard

12 Cement unit

13 230V AC UPS

14 230V AC UPS Battery

15 230V AC UPS Main Distribution Board

16 230V AC UPS DB

17 Dynamic Positioning System Test (DPS)

4 Category II systems for commissioning (as independent systems)No. Name of the system

1 Misc.Lifesaving Equipment

2 Helicopter Refueling System

3 Ballast System

4 Dirty Drain System

5 Fire Main System

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No. Name of the system

6 Inergen System

7 Fire Water Deluge System

8 Main Diesel Generator

9 Steam Generating System

10 Seawater Cooling System

11 Starting Air System For Main Engine

12 Thruster Seawater Cooling System

13 Sewage and Gray Water Discharge System

14 Anchor Winches

15 Thruster

16 Bilge System

17 Diesel Gen. F.W Cooling System

18 11Kv Switchboard (or equivalent)

19 690V HPU MCC (or equivalent)

20 690V Drilling VFD Switchboard (or equivalent)

21 690V Thruster VFD Switchboard (or equivalent)

22 230V AC UPS (or equivalent)

23 230V AC UPS battery (or equivalent)

24 230V AC UPS Main Distribution Board (or equivalent)

25 230V AC UPS DB (or equivalent)

26 Nav. and Signal Light

27 U-Light and Foghorn

28 Obstruction Light

29 Remote Sounding System

30 ICMS, Fire and Gas, ESD and DP with Sensor and Reference System

31 Telecom System

32 HPU For Vent Valve Operation

33 Ram Rig Travelling Yokes Main/Aux. (or equivalent)

34 Tong Lift System

35 LIR / HVAC Room, HVAC

36 Derrick Drilling Machine (DDM)/Top Drive

37 Rotary Table Main/Aux.(Including Power Slips)

38 DAT System

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39 Guideline Winch and Tensioner System

40 LP/HP Nitrogen System

41 Mud Bucket

42 Bulk Powder Handling System

43 Mud Storage and Transfer System

44 Mud Mixing and Additive System

45 Mud Supply System

46 Mud Return and Treatment System

47 Mud, Brine, Oil Storage and Transfer System System

48 BOP Package

49 Diverter Package

50 Tubular and Riser Feeding Machine/Shuttle, Main Rig

51 Lower Guiding Arm including Heads and Rail, Main/Aux

52 Trolley for Riser Guiding

53 Riser Chute

54 DP/DC, Casing and Riser Fingerboard, bellyboard

55 Bridge Crane in Derrick

56 Hydraulic Roughneck

57 Multi Scope Arm

58 Hydraulic Cathead, Brake Out, including Wire

59 Tail in Arm

60 Manipulator Arm (MPMA/DFMA)

61 Pipehandler Crane

62 Riser Handling Crane (w/ Rail)

63 BOP Skid/X-Mas/ LMRP Transportation/Handling

64 Miscellaneous Guides

65 Access Basket

66 BOP Overhead Crane/X-mas Tree Overhead Crane

67 Overhull/underhull Guiding

68 Utility Winch and Manrider Winch

69 Burner Boom

70 Ringline HPU and Distribution System

71 Ramrig HPU and Distribution System

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72 Dual Derrick Simultaneous Operation

73 Integrated BOP and Riser Handling System

74 Sludge system

75 Loop Check

76 Mud, Cement, Choke and Kill Manifolds

77 LQ HVAC

78 Power Management System

79 Navigation Equipment

80 Machinery Unmanned Test

81 Anchor Test

82 PA Coverage Measurement

5 Category III systems for commissioning (as independent system)No. Name of the system

1 Monorail System

2 Winches and Towing Equipment

3 Drill Water System

4 Deck Bilge System

5 Service Air System

6 Steam and Drain System

7 Seawater Service System

8 Aux. Cooling F.W. System

9 Diesel Oil Transfer and Drain System

10 Lub. Oil Storage, Transfer and Drain System

11 Distilled and Make-Up Water System

12 Potable and Sanitary Supply System

13 Cold Starter Generator

14 Marine Growth Protection System

15 Heat Trace System

16 460V LV Switchboard

17 230V LV Switchboard

18 Small Power DB

19 Lighting and Small Power

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20 Shore Connection Box

21 Column and Pontoon Machinery Rooms Ventilation Systems

22 Electrical and Auxiliary Machinery Rooms Ventilation Systems

23 Engine Rooms Ventilation Systems

24 Port/Stbd/Aft Machinery Rooms Ventilation Systems

25 HVAC Duck Air Leak Test Procedure for Hull and Topside

26 ICCP

27 Pneumatically Operated Door

28 Provision Cold Store and Freezer System

29 Noise Level Measurement

30 Vibration Level Measurement

31 Helideck Drains

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APPENDIX B TYPICAL SURVEY CATEGORIZATION FOR SEMI-SUBMERSIBLE UNITS DURING MECHANICAL COMPLETION ANDCOMMISSIONING OF MARINE AND DRILLING SYSTEMS







6 Thruster Seawater Cooling System S/T

7 Thruster S/T

8 11Kv Switchboard (or equivalent) PMS

9 690V HPU MCC (or equivalent) SIT

10 690V Drilling VFD Switchboard (or equivalent) SIT

11 690V Thruster VFD Switchboard (or equivalent) DP/PMS

12 230V AC UPS (or equivalent) ESD

13 230V AC UPS Battery (or equivalent) ESD

14 230V AC UPS Main Distribution Board (or equivalent) ESD

15 230V AC UPS DB (or equivalent) ESD

16ICMS, Fire and Gas, ESD & DP

With Sensor and Reference SystemESD/HVAC


18 Column and Pontoon Machinery Rooms Ventilation Systems ESD




22 LQ HVAC ESD


24 Dynamic Positioning System Test (DPS) CONTROL


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1 Anchor Winches If Posmoor, TA/ATA

2 PA Coverage Measurement Normal operation

3 Ballast System Semi recovery test

4 Auxiliary Cooling Fresh Water System (#2) S/T & SIT






3 Deck Crane

4 Emergency Bilge System



7 Escape Chute

8 Column Room Elevators

9 Water Tight Doors


11 Inclining Experiment and Light Weight Measurement Procedure


13 Emergency SWBD

14 Cement Unit


1 Misc. Lifesaving Equipment



4 Ballast System

5 Fire Main system

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6 Inergen system

7 Fire Water Deluge system



10 Seawater Cooling System

11 Starting Air System for Main Engine

12 Thruster Seawater Cooling System


14 Anchor Winches

15 Thrusters

16 Bilge System

17 Diesel Generator Fresh Water Cooling System

18 11Kv Switchboard (or equivalent)

19 Navigation and Signal Light



22 690V Thruster VFD Switchboard (or equivalent)

23 230V AC UPS (or equivalent)

24 230V AC UPS Battery (or equivalent)

25 230V AC UPS Main Distribution Board (or equivalent)

26 230V AC UPS DB (or equivalent)




30 HPU for Vent Valve Operation

31 Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)

32 Tong Lift System

33 LIR/HVAC Room, HVAC

34 Draw-Work


36 Rotary Table Main / Auxiliary (Including Power Slips)

37 DAT System

38 Guideline Winch and Tensioner System

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39 LP/HP Nitrogen System

40 Mud Bucket






46 Pontoon Mud, Brine, Oil Storage and Transfer System

47 BOP Package

48 Diverter Package

49 Tubular and Riser Feeding Machine/Shuttle, Main Rig

50 Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary

51 Trolley For Riser Guiding

52 Riser Chute

53 DP/DC, Casing and Riser Fingerboard

54 Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig


56 Multi Scope Arm (Casing Modem)

57 Hydraulic Cathead, Brake Out, Including Wire

58 Tail in Arm

59 Multi Manipulator Arm (DFMA)


61 Riser Handling Crane (with Rail)

62 Skids for BOP/X-mas tree/LMRP


64 Access/cherrypicker Basket

65 BOP / X-Mas Tree Overhead Crane

66 Underhull Guiding Main / Auxiliary

67 Overhull/underhull Guiding


69 Burner Boom


71 Ramrig HPU and Distribution System (or equivalent)

Appendix B


DNV AS


72 Dual Derrick Simultaneous Operation (if Fitted)

73 Integrated BOP and Riser Handling System

74 Sludge System

75 Loop Check

76 Drilling Control

77 Mud and Cement Manifolds


79 Anchor Test

80 Leakage detection system


1 Monorail System

2 Air Winches and Towing Equipment


4 Deck Bilge System




8 Aux. Cooling FW system


10 Lub Oil Storage, Transfer and Drain System




14 MGPS (Marine Growth)


16 460V LV Switchboard (or equivalent)

17 230V LV Switchboard (or equivalent)

18 Small Power Distribution Boards



21 Column and Pontoon Machinery rooms ventilation systems

Appendix B


DNV AS


22 Electrical and Auxiliary Machinery rooms ventilation systems

23 Engine room ventilation systems

24 Port/ Stbd/Aft machinery rooms ventilation systems

25 HVAC Duct Air Leak Test Procedure for Hull and Topside

26 ICCP





31 Helideck Drains

Appendix B


DNV AS

APPENDIX C TYPICAL SURVEY CATEGORIZATION FOR “JACK-UP”UNITS DURING MECHANICAL COMPLETION AND COMMISSIONINGOF MARINE AND DRILLING SYSTEMS







6 11Kv Switchboard PMS

7 690V HPU MCC SIT

8 690V Drilling VFD Switchboard SIT

9 230V AC UPS ESD

10 230V AC UPS Battery ESD

11 230V AC UPS Main Distribution Board ESD

12 230V AC UPS DB ESD

13ICMS, Fire and Gas and ESD

With Sensor and Reference SystemESD/HVAC





18 LQ HVAC ESD



21 Jacking motors Jacking trial

22 Jacking control system Jacking trial


1 Fire water lift with submerged pumps F&G/Deluge/control

2 PA Coverage Measurement Normal operation

Appendix C


DNV AS

No. Name of the system Integrated with

3 Auxiliary Cooling Fresh Water System (#2) S/T and SIT






3 Deck Crane

4 Emergency Bilge System



7 Escape Chute

8 Water Tight Door


10 Inclining Experiment and Light Weight Measurement Procedure


12 Emergency SWBD

13 Cement Unit

14 Cantilever

15 Rack Chocking Device

16 Accommodation Unit Gangway Test

17 230V AC UPS

18 230V AC UPS Battery

19 230V AC UPS Main Distribution Board

20 230V AC UPS DB





Appendix C


DNV AS


4 Fire Main System

5 Inergen System

6 Fire Water Deluge System



9 Seawater Cooling system (including Buffer Tank alarms if Fitted)

10 Starting Air System for Main Engine


12 Bilge System

13 Diesel Generator Fresh Water Cooling System

14 11Kv Switchboard or equivalent



17 Navigation and Signal Light




21 ICMS, Fire and Gas and ESD

22 Telecommunication System

23 HPU for Vent Valve Operation

24 Ram Rig Travelling Yokes Main and Auxiliary (or equivalent)

25 Tong Lift System

26 LIR/HVAC Room, HVAC

27 Draw-Work


29 Rotary Table Main / Auxiliary (Including Power Slips)

30 Mud Bucket






36 Mud, Brine, Oil Storage and Transfer System

Appendix C


DNV AS


37 BOP Package

38 Diverter Package

39 Lower Guiding Arm Includes Heads and Rail, Main and Auxiliary

40 Direct Lift Bridge Crane DP/DC/CSG, Main Rig / Auxiliary Rig


42 Multi Scope Arm (Casing Modem)

43 Hydraulic Cathead, Brake Out, Including Wire

44 Tail in Arm

45 Multi Manipulator Arm (DFMA)


47 Skids for BOP/X-mas tree/LMRP


49 Access Basket

50 BOP / X-Mas Tree Overhead Crane


52 Burner Boom


54 Ramrig HPU and Distribution System

55 Dual Derrick Simultaneous Operation

56 Sludge System

57 Loop Check

58 Drilling Control

59 Mud and Cement Manifolds


61 Anchor Test (if fitted for temp and emergency mooring)

62 Ballast System/ Pre Load System

63 Spud can HP water injection


1 Monorail System

2 Air Winches and Towing Equipment


Appendix C


DNV AS


4 Deck Bilge System





9 Lube Oil Storage, Transfer and Drain System




13 MGPS (Marine Growth) (if fitted for spud cans)


15 Small Power DB



18 HVAC Duct Air Leak Test Procedure for Hull and Topside





23 Helideck Drains

Appendix C


DNV AS

APPENDIX D TYPICAL SURVEY CATEGORIZATION FOR FPSO UNITSDURING MECHANICAL COMPLETION AND COMMISSIONING OFMARINE AND PRODUCTION SYSTEMS

1 Category I systems for commissioning (for integration)

No. Name of the system Integratedwith*

1 Watertight Doors and Hatches VMS

2 Communication – PA/GA ESD/PSD/F&G

3 ESD/PSD System ICSS

4 F&G Detection Systems ICSS

5 UPS for Critical Control (PCS/DP/PMS) ESD

6 HVAC Systems ESD/F&G

7 Main Power Generation and Distribution ESD/PMS

8 Main Fire Pump and Fire Water System ESD/F&G

9 Helifuel Fire Fighting System ESD/F&G

10 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems ESD/F&G

11 Topsides Fire Water Deluge Systems ESD/F&G

12 Dynamic Positioning System (DPS), Steering and Propulsion and associated equipment ICSS/ESD

13 Wellhead Control System (WHC) ESD/PSD

14 Riser Quick Connect/Disconnect System ESD/PSD

15 Offloading Quick Connect/Disconnect System including telemetry ESD/PSD/VMS

16 Position Monitoring System ICSS/ESD

* Where an integrated control and safety system is employed the control system architecture will define whichsystems the integrated testing should interface with and may include ICSS/ESD/PSD/F&G/PCS/DP/PMS/VMS.

2 Category II systems for commissioning (for integration)No. Name of the system Integrated with*

1 Ballast System ICSS

2 Fuel oil Transfer System VMS

3 Lube oil Transfer System VMS

4 Seawater Cooling System (Marine) VMS

5 Starting Air System For Main Engine (Marine) VMS

6 Bilge System VMS

7 Inert Gas System VMS

Appendix D


DNV AS

No. Name of the system Integrated with*

8 Cargo Pumping, Control and Monitoring Systems PSD

9 Production Riser System PSD/ESD

10 Topside Nitrogen System PSD/ESD

11 Inlet Manifold PSD/ESD

12 Test Manifold PSD/ESD

13 Separation System PSD/ESD

14 Test Separation System PSD/ESD

15 Process Heating System PSD/ESD

16 Process Cooling System PSD/ESD

17 Closed Drain System PSD/ESD

18 Produced Water Treatment and Disposal System PSD/ESD

19 Seawater Treatment and Injection System PSD/ESD

20 Gas Treatment System PSD/ESD

21 Glycol Regeneration Systems PSD/ESD

22 Fuel Gas Treatment System PSD/ESD

23 Process Relief and Depressurisation Systems PSD/ESD

24 Gas Disposal System PSD/ESD

25 Gas Compression System PSD/ESD/PCS

26 Oil Export System PSD/ESD

27 Gas Export System PSD/ESD

28 Pipeline Pigging Systems PSD/ESD

29 Methanol Storage and Injection Systems PSD/ESD

30 Chemical Storage and Injection Systems PSD/ESD

31 Export Riser System PSD/ESD

32 Gas Injection Systems PSD/ESD

33 Machinery Unmanned/Watch Call Alarm System (E0) VMS

34 Offshore Crane ESD

35 Helideck Status Lights (Wave off) F&G

36 Topside Power Generation System ESD

37 Steam System ESD


Appendix D


DNV AS



2 Emergency Lighting

3 Navigation Lights

4 Structural Marking (U-Light and Foghorn)

5 Steering Gear and Control System

6 Watertight Doors and hatches

7 Diving System

8 Communication – GMDSS, PA/GA, PABX

9 ESD/PSD System

10 F&G Detection Systems

11 Emergency Generator and Emergency Switchboard System

12 Emergency Generator Starting System (Air or Battery)

13 Emergency Motor Control Centre (to control fire pump and other emergency services)

14 Transitional Source of Power

15 UPS for PA/GA/PABX

16 UPS for GMDSS

17 UPS for emergency lighting

18 UPS ICSS system *define or UPS for ESD/PSD/F&G/PCS/DP/PMS

19 Fuel Oil System for Main Power Generation

20 Lube oil System for Main Power Generation

21 Fresh Water Cooling System for Main Power Generation

22 HVAC for propulsion system

23 HVAC for Main Power Generation

24 Main Power Generation and Distribution




28 Escape routes

29 Liferafts and Escape to Sea


31 Main Fire Pump and Fire Water System

Appendix D


DNV AS


32 Helifuel Fire Fighting System

33 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems

34 Topsides Fire Water Deluge Systems

35 Deck Foam System

36 Dynamic Positioning System (DPS), Steering and Propulsion and associated equipment

37 Wellhead Control System (WHC)

38 Riser Quick Connect/Disconnect System

39 Offloading Quick Connect/Disconnect System

40 Position Monitoring System



2 Helicopter Refuelling System

3 Ballast System

4 Hazardous Open Drain System

5 Non Hazardous Open Drain System

6 Mooring Line Tension Measuring System

7 Fuel oil Transfer System

8 Lube oil Transfer System

9 Steam Generating System (Marine)

10 Seawater Cooling System (Marine)

11 Starting Air System For Main Engine (Marine)

12 Control Air System


14 Anchoring System and Winches

15 Thrusters not part of steering or propulsion

16 Bilge System

17 Main Lighting Systems

18 Topside Umbilical Termination Unit

19 Turret Swivel Systems

20 Inert Gas System

21 Cargo Pumping, Control and Monitoring Systems

Appendix D


DNV AS


22 Production Riser System

23 Topside Nitrogen System

24 Inlet Manifold

25 Test Manifold

26 Separation System

27 Test Separation System

28 Process Heating System

29 Process Cooling System

30 Closed Drain System

31 Produced Water Treatment and Disposal System

32 Seawater Treatment and Injection System

33 Gas Treatment System

34 Glycol Regeneration Systems

35 Gas Compression System

36 Fuel Gas Treatment System

37 Process Relief and Depressurisation Systems

38 Gas Disposal System

39 Oil Export System

40 Gas Export System

41 Pipeline Pigging Systems

42 Methanol Storage and Injection Systems

43 Chemical Storage and Injection Systems

44 Export Riser System

45 Gas Injection Systems

46 HVAC for Hazardous Areas

47 LQ HVAC

48 Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)

49 HVAC for Engine Rooms and other Machinery spaces


51 Machinery Unmanned/Watch Call Alarm System (E0)

52 Offshore Crane

53 Helideck Status Lights (Wave off)

54 Topside Power Generation System

Appendix D


DNV AS


1 Deck Bilge System










11 Small Power DB

12 Small Power



15 Impressed Current Protection System (ICCP)



18 Helideck Drains

Appendix D


DNV AS

APPENDIX E TYPICAL SURVEY CATEGORIZATION FOR FSO UNITSDURING MECHANICAL COMPLETION AND COMMISSIONING OFMARINE AND PRODUCTION SYSTEMS

1 Category 1 systems for commissioning (for integration)No. Name of the system Integrated with*

1 Watertight Doors and Hatches VMS

2 Communication – PA/GA ESD/PSD/F&G

3 ESD/PSD System ICSS

4 F&G Detection Systems ICSS

5 UPS for Critical Control (PCS/DP/PMS) ESD

6 HVAC Systems ESD/F&G

7 Main Power Generation and Distribution ESD/PMS

8 Main Fire Pump and Fire Water System ESD/F&G

9 Helifuel Fire Fighting System ESD/F&G

10 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems ESD/F&G

11 Inlet Flowline or Riser Quick Connect/Disconnect System ESD/PSD

12 Offloading Quick Connect/Disconnect System including telemetry ESD/PSD/VMS



2 Category II systems for commissioning (for integration)No. Name of the system Integrated with*

1 Ballast System ICSS

2 Fuel oil Transfer System VMS

3 Lube oil Transfer System VMS

4 Seawater Cooling System (Marine) VMS

5 Starting Air System For Main Engine (Marine) VMS

6 Bilge System VMS

7 Inert Gas System VMS

8 Cargo Pumping, Control and Monitoring Systems PSD

9 Inlet flowline or riser System PSD/ESD

10 Oil Export System PSD/ESD

11 Pipeline Pigging Systems PSD/ESD

Appendix E


DNV AS

No. Name of the system Integrated with*

12 Methanol Storage and Injection Systems PSD/ESD

13 Chemical Storage and Injection Systems PSD/ESD

14 Export Riser System PSD/ESD

15 Machinery Unmanned/Watch Call Alarm System (E0) VMS

16 Offshore Crane ESD

17 Helideck Status Lights (Wave off) F&G




2 Emergency Lighting

3 Navigation Lights

4 Structural Marking (U-Light and Foghorn)

5 Watertight Doors and hatches

6 Diving System

7 Communication – GMDSS, PA/GA, PABX

8 ESD/PSD System

9 F&G Detection Systems

10 Emergency Generator and Emergency Switchboard System

11 Emergency Generator Starting System (Air or Battery)

12 Emergency Motor Control Centre (to control fire pump and other emergency services)

13 UPS for PA/GA/PABX

14 UPS for GMDSS

15 UPS for emergency lighting

16 UPS ICSS system* define or UPS for ESD/PSD/F&G/PCS/DP/PMS

17 Fuel Oil System for Main Power Generation

19 Lube oil System for Main Power Generation

20 Fresh Water Cooling System for Main Power Generation

21 HVAC for propulsion system

22 HVAC for Main Power Generation

23 Main Power Generation and Distribution

Appendix E


DNV AS





28 Escape routes

29 Liferafts and Escape to Sea


31 Main Fire Pump and Fire Water System

32 Helifuel Fire Fighting System

33 Specific Area Fire Fighting Systems i.e. Foam, CO2, Inergen, Water Spray Systems

34 Fire Water Deluge Systems

35 Deck Foam System

36 Inlet Flowline or Riser Quick Connect/Disconnect System

37 Offloading Quick Connect/Disconnect System






3 Ballast System

4 Hazardous Open Drain System

5 Non Hazardous Open Drain System

6 Mooring Line Tension Measuring System

7 Fuel oil Transfer System

8 Lube oil Transfer System

9 Steam Generating System (Marine)

10 Seawater Cooling System (Marine)

11 Starting Air System for Main Engine (Marine)

12 Control Air System


14 Anchoring System and Winches

Appendix E


DNV AS


15 Thrusters not part of steering or propulsion

16 Bilge System

17 Main Lighting Systems

18 Inert Gas System

19 Cargo Pumping, Control and Monitoring Systems

20 Gas Disposal System

21 Oil Export System

22 Pipeline Pigging Systems

23 Methanol Storage and Injection Systems

24 Chemical Storage and Injection Systems

25 Export Riser System

26 HVAC for Hazardous Areas

27 LQ HVAC

28 Individual HVAC Systems (LER, PCR, Topside Power Generation Enclosure)

29 HVAC for Engine Rooms and other Machinery spaces


31 Machinery Unmanned/Watch Call Alarm System (E0)

32 Offshore Crane

33 Helideck Status Lights (Wave off)


1 Deck Bilge System










11 Small Power DB

Appendix E


DNV AS


12 Small Power



15 Impressed Current Protection System (ICCP)



19 Helideck Drains

6 Category I systems for commissioning (class notation CRANE)No. Name of the system

1 Deck Crane

Appendix E


DNV AS

APPENDIX F DNV REQUIREMENTS RELATED TO MARINE, UTILITYAND SAFETY SYSTEMS

1 Stability and watertight integrity

Appendix F


DNV AS

Class guideline —

DNV-CG-0170. Edition O

ctober 2021

Offshore classification projects - testing and com

missioning

DNV AS

Table 1 Stability and watertight integrity

System / equipmentdescription

DNV OS /

rule referenceDNV surveillance focus

Inclining test DNV-OS-C301Ch.2 Sec.1 [3.1]

— Confirm the results of an inclining test are gathered for the first unit of a design when it is near tocompletion as possible, to determine accurately the light ship data (weight and position of center ofgravity).

DNV-OS-C301Ch.2 Sec.2 [9.1]

— Pressure testing of watertight doors and hatches:

— Before installation (i.e. normally at the manufacturer), confirm that watertight doors or hatch covers arehydraulically tested with exposure to the side most prone to leakage.

— The test pressure shall correspond to the pressure height + 0.05 N/mm2 (5 m water), and theacceptance criteria shall be:

— No leakage for doors or hatch covers with gaskets, maximum water leakage 1 litre per minute for doorsor hatch covers with metallic sealing.


— Hose testing of all watertight and weathertight doors and hatch covers:

— After installation onboard, confirm watertight and weathertight doors or hatch covers are hose tested.The water pressure shall be at least 0.2 mm2 (2 bar), and the nozzle shall be held at a distance ofmaximum 1.5 m from the door or hatch cover. No leakage shall be accepted.

— As an alternative to hose testing, chalk testing may be applied under special circumstances, uponacceptance by all parties involved.

Watertight /weathertight doorsand hatches


— Function testing of watertight doors and hatch covers— After installation onboard the operation, control and alarm functions for all watertight doors and hatch

covers shall be tested. The following shall be verified:

— For each door, the total closing time shall not be less than 30 seconds or more than 60 seconds.— It shall be possible to close all doors or hatch covers in one group simultaneously within 60 seconds

from the control room.— It shall be possible to open and close the doors or hatch covers three times by means of a local device

and stored energy.— It shall be possible for a person to pass through the doorway or hatchway and at the same time hold

both handles in the “open position”.— It shall be possible to open the door or hatch cover locally from both sides, after being closed centrally,

and the door or hatch cover shall close automatically after such opening.— The door or hatch cover shall be mechanically locked in a closed position.— The light and sound signals shall give warning when the door or hatch cover is closed centrally.— The remote position indicator for doors or hatch covers shall function properly.— The alarms for the following conditions shall function properly:— Start of standby pump, loss of power to control, alarm and indicating system, low pressure (below

lowest permissible).

Appendix F

2 Fabrication and testing of offshore structures

Appendix F


DNV AS

Class guideline —


ctober 2021


missioning

DNV AS

Table 2 Fabrication and testing of offshore structures


DNV OS /



— Testing of Tightness— Confirm that all tanks are tested for tightness. The test may be performed as a hydraulic test using water.

Alternatively, tightness may be confirmed by use of compressed air and an efficient indicating liquid.Void spaces not part of the structural integrity in the accidental limit state (ALS) can normally be omittedfrom this tightness test. A void space defined as a confined space is typically not intended to carry liquidcargo, ballast or fuel. Gas tightness of e.g. boundaries between cofferdams/pump room and adjacent non-hazardous area, may be subject to appropriate methods accepted by the purchaser.

— Tightness test by compressed air and an effective indicating liquid shall be carried out before protectivecoating has been applied. A thin layer (< 50 m) of primer with documented chemical composition maybe applied prior to testing. Tightness may also be confirmed by the following methods: vacuum testing ofindividual welds, injection of air into root gap of fillet welds (fillet air test). Tightness testing of continuousautomatic and multipass semiautomatic weld processes in butt welds of plated boundaries may be omitted.

— If compressed air and an efficient indicating liquid are used, the air pressure shall not exceed 0.2 bar andshall be reduced to a smaller value, but not less than 0.15 bar before inspection. The method shall giveclear indications of small leaks. Care should be taken so that the pressure in the tank does not exceed 0.2bar above atmospheric pressure because of unexpected raise in ambient temperature, falling atmosphericpressure or otherwise. The pressure shall be measured by an accurate method, such as a U-shaped tubewith water. Means should be provided to release pressure in emergency case.

— If water is applied, the pressure shall not be less than 25 kN/m2 at the top of the tank. The outside of thetank shall be dry and clean.

— For hose testing, the hose pressure shall be at least 200 kN/m2 and applied at a maximum distance of 1.5m. The nozzle inside diameter shall be at least 12.0 mm.

Tanks


— Structural Tests— Confirm that at least one of several identical tanks undergo a structural test. By agreement, the test shall

be carried out by applying water. In agreement with the purchaser, the structural test may be omitted for aseries of sister vessels. Protective coating may be applied before a structural test is carried out.

— Bulkheads between tanks arranged to carry different liquids shall be hydraulically tested from at least oneside.

— The test pressure height shall be taken as the design pressure height for load case a) as defined in therelevant offshore object standard. The pressure shall be maintained for at least 20 minutes. The filling rateshall be restricted to avoid excessive dynamic design pressure.

— The structural test is considered successful if no significant deformations or other damages have developedduring the test.

— Confirm that closing appliances for access openings in decks, bulkheads (etc.) which shall be watertight,are separately tested before installation. Structural testing of other parts outside tanks may be required.

— If structural tests reveal weaknesses in the structure, further testing is required.

Appendix F

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Corrosion protectionsystems


— Installation of impressed current cathodic protection system:

— Confirm that testing of the proper functioning of the systems is carried out. The test method and resultsshall be reported.

— Final testing and acceptance of the system shall be performed after installation.

Appendix F

3 Marine and machinery systems and equipment

Appendix F


DNV AS

Class guideline —


ctober 2021


missioning

DNV AS

Table 3 Marine and machinery systems and equipment


DNV OS /


All systems /equipment

DNV-OS-D101 Ch.3Sec.1 [5.1] to [5.3]

— General

— Commissioning shall be in accordance with submitted procedures reviewed and approved by DNV inadvance of the commissioning. Commissioning shall be witnessed by a surveyor and is consideredcomplete when all systems, equipment and instrumentation are operating satisfactorily.

— System and Equipment Checks

— During commissioning, all items of pipework and equipment shall be checked for compliance withapproved documentation and commissioning procedures.

— Functional Testing

— During commissioning, the systems shall be functionally tested, as practicable, in accordance withapproved procedures.

DNV-OS-C301 Ch.2Sec.2 [3.2]

— Confirm positive functional testing results of closure devices in way of watertight boundaries fromcontrol room / station, as well as positive remote confirmation of the same closure devices.

— Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shallbe capable of being operated from a control room. Valve position indicators shall be provided at theremote control station.

DNV-OS-D101 Ch.2Sec.1 [1.7]

— For remotely controlled valves, confirm that a failure in power supply (electrical, hydraulic, andpneumatic) does not cause opening of closed valves or closing of open valves on fuel oil tanks and incooling water system for propulsion and power generating machinery.

All piping systems


— Confirm that all valve bodies are subject to a hydrostatic test by the manufacturer, at a pressure equalto 1.5 times the nominal pressure. The nominal pressure is the maximum allowable working pressure atroom temperature. The test pressure need not be more than 70 bar in excess of the nominal pressure.For valves fitted on unit or installation’s side and bottom, the test pressure shall not be less than 5 bar.

— Confirm that butterfly valves fitted on unit or installation’s side and bottom are hydrostatically tested ata pressure equal to 5 bar applied independently on each side of the closed disc.

Appendix F

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


DNV-OS-D101 Ch.2Sec.6 [6.1]/[6.2]

— Hydrostatic testing required after assembly on board— The piping shall be hydrostatically tested in accordance with the following:

— Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipesand feed pipes of class III:

— 1.5 maximum working pressure, minimum 4 bar.— Hydraulic piping:— 1.5 maximum working pressure for 15 minutes. Test pressure need not exceed working pressure by

more than 70 bar.— Piping systems made from non-metallic material:— 1.5 maximum working pressure, minimum six (6) bar, minimum duration one (1) hour.


— Confirm that all piping systems are properly flushed, checked for leakage and functionally tested underworking conditions.

Pump hydrostatictesting


— Confirm that all pump housings, excluding those for pumps which transfer stored crude oil, arehydrostatically tested to 1.5 times the maximum working pressure. The test pressure need not exceedthe maximum working pressure by more than 70 bar.

— Pumps for transfer of crude oil shall be tested at 1.3 times the maximum working pressure, and to aminimum of 14 bar.

— For centrifugal pumps, the maximum working pressure shall be the maximum pressure head on thehead-capacity curve.

— For displacement pumps, the maximum working pressure shall not be less than the relief valveopening pressure.

— The steam side of the steam driven pumps shall be hydraulically tested to 1.5 times the steampressure.

— Hydrostatic testing of pump housings on submerged pumps is normally not required.

Pump capacitytesting


— Confirm that pump capacities are checked with the pumps running at design condition (rated speed andpressure head, viscosity, etc).

— The capacity test need not be applied for pump designs where satisfactory tests have beenpreviously performed and documented.

Appendix F

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Ballast, bilge anddrainage systems -general


— Ballast and Bilge System

— Confirm functional redundancy of system such that any tank may be de-ballasted by either pump.— Confirm installed pump capacity meets design requirements.— Confirm functionality of the central Ballast and Bilge Control Station testing.— Witness final comprehensive testing of the Ballast and Control System.— Confirm self-closure of ballast valves in emergency situations and remote status indication.— Confirm power supply function from normal and emergency switchboards.— Confirm status indications remain following shutdown of power generation (UPS function).

— Bilge System

— Confirm functional redundancy of system such that the bilge of any tank / compartment may beremoved by either pump.

— Confirm free draining arrangements for tanks, compartments and voids fitted with such.— Confirm location and function of both branch bilge suction lines fitted within pump / essential

machinery rooms.— Confirm location and function of emergency bilge suction within pump / essential machinery rooms.— Confirm installed pump capacity meets design requirements.

Ballast, bilgeand drainagesystems – columnstabilized units andinstallations


— Confirm that the general requirements are complied with, unless otherwise specified herein.

— The ballast system is to provide the capability to bring the unit or installation, while in an intactcondition, from the maximum normal operating draught to a severe storm draught, within three (3)hours.

Lubricating oilsystems


Confirm proper function of remote shut-off of normally open valves as fitted to lube oil tanks above doublebottom and located below top of the tank or overflow outlet.

— This requirement may be waived for small tanks with volume less than 0.5 m3, and tanks which uponunintended closing of the valves, may result in loss of main functions.

Appendix F

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


DNV-OS-D101 Ch.2Sec.4 [3.4] to [3.6]and [3.9]

— Fuel Oil Tank Valves

— Confirm proper function from central position outside engine room of remote shut-off valves as fittedto fuel oil (FO) tanks and located below top of the tank or overflow outlet. Also, confirm the properlocation of remote control station.

— Arrangement of Valves

— Confirm location and proper function of fuel oil line shut-off valves fitted on or nearby engine roombulkheads

— Confirm all valves in the fuel oil system shall be controllable from positions above the floor plates.

— Oil Filters

— Confirm duplex filter arrangement such that it prevents unintended opening of a filter underpressure.


— Remote Stop of Fuel Oil Pumps and Fans— Confirm function of remote emergency stop of the power supply to the following pumps and fans from a

central place outside the engine and boiler room:

— Fuel oil transfer pumps— Fuel oil booster pumps— Nozzles cooling pumps when fuel oil is used as coolant— Fuel oil purifiers— Pumps for oil-burning installations— Fans for forced draught to boilers— Fans for ventilation of engine and boiler rooms— Thermal oil circulation pumps— Hydraulic oil pumps.

Fuel oil systems

DNV Rules for Ships

Pt.4 Ch.8 Sec.8

A400

— Fuel Oil Pre-Heaters— Confirm proper function of oil temperature control (Max 50ºC) and related manual interlock for over

temperature.

Appendix F

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


DNV Rules for Ships

Pt.4 Ch.7 Sec.3

B100 / B200 /

B300 / B600 /

B700

— Confirm function of mechanical ventilation, automatic fire detecting and an approved fixed fire-extinguishing system, operated from an easily accessible place outside the room.

— Confirm location and proper function of remote stop of ventilation, oil-burner and oil-booster pumpsoutside the room. Ventilating ducts shall be possible to close by means of flaps.

— Confirm proper automatic function of minimum circulation through the heater in case consumers areshut-off.

— Confirm local and remote manual operation, from an easily accessible location outside the heater room,of stop-valves fitted to oil fired heater main inlet and main outlet pipes for thermal-oil.

— Confirm local start, stop and remote manual stop, from an easily accessible location outside the heaterroom, of circulation pumps and heater burners.

— For exhaust fired thermal oil heaters, confirm function of temperature control and bypass arrangementsand fire extinguishing arrangements as fitted.

— Confirm that the circulating pumps remain in operation at least for 10 minutes after stop of burners.

DNV Rules for Ships

Pt.4 Ch.7 Sec.7

E100 / E200

— Confirm proper automatic control of thermal-oil outlet temperature to be able to keep the oiltemperature within the limits for safe operation under all load conditions.

— Confirm alarm and automatic shutdown of burner for the following:

— Thermal Oil: Temperature Outlet High, Flow Low and Pressure Low— Flue Gas: Temperature High— Expansion Tank: Level Low, Temperature High (alarm only)— Forced Draft: Fan Stopped— Heavy Fuel Oil: Temperature or Viscosity High / Low (alarm only)— Flame: Flame Ignition and / or Flame Failure.

Thermal oil systems

DNV Rules for Ships

Pt.4 Ch.7 Sec.8

D600

— After onboard installation, confirm that the system is functionally and capacity tested according to anapproved test program. The test procedure shall include flow measurements for each coil, covering thewhole range of heater loads. The heater system charge shall be a thermal-oil, which will allow maximumheater rating to be tested.

Feed water andcondensation system


— Confirm the preheating arrangement maintains the temperature above 80ºC when boilers are operatedat maximum load during normal service.

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DNV-OS-D101 Ch.2Sec.4 [10.2]

— Confirm starting systems for internal combustion engines and gas turbines shall have capacity for anumber of starts specified below without reloading of air receivers:

— Engines for driving electric generators and engines for other purposes – three (3) starts each, totalcapacity need not exceed six (6) starts

— Engines for driving emergency generators – six (6) starts, automatic attempts shall be limited tothree (3) starts

— Confirm if a starting system serves two or more of the above specified purposes, the capacity of thesystem shall be the sum of the capacity requirements.

— Confirm for multi-engine propulsion plants, the capacity of the starting air receivers shall be sufficientfor three (3) starts per engine. However, the total capacity shall not be less than twelve (12) starts andneed not exceed eighteen (18) starts.

— Confirm compressors are installed with total capacity sufficient for charging air receivers of capacitiesspecified in 201 and 202 from atmospheric to full pressure in the course of one (1) hour.

Pneumatic startingarrangements

DNV-OS-D201 Ch.2Sec.2 [8.2] — Confirm that failed automatic starting attempts are limited to restrict consumption of starting energy.

HVAC system DNV-OS-D101 Ch.2Sec.4 [11.3]

— Confirm for machinery spaces that the capacity of the ventilation plant is such as to provide comfortableworking condition in the engine room, to supply the necessary combustion air to the diesel engines,boilers, and to prevent heat-sensitive apparatus from overheating.

— Confirm that air is distributed to all parts of the engine room, so that pockets of stagnant hot air areavoided. Special considerations should be given to areas with large heat emission and to all normalworking areas, where reasonably fresh and clean outdoor air should be provided through adjustableinlet devices.

— Confirm for units with unrestricted location, the temperature rise from air intake to air passingfrom the engine room up to the casing should be maximum 10ºC for an outside air temperature ofmaximum +35ºC.

— Confirm that the air exhaust fans maintain a slight positive pressure in the engine room, which does notexceed 50 Pa.

— Confirm that hazardous enclosed spaces receives twelve (12) air changes per hour and non-hazardousenclosed spaces receives six (6) air changes per hour.

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Use of gas and crudeoil for auxiliaryboilers and turbines

DNV-OS-D101 Ch.2Sec.4 [12.3.11]

— Confirm the following fault conditions shall release alarm and automatic shutdown of gas and crude oilsupply:

— Detected gas of maximum 20% of the lower explosive limit (LEL) in the ventilated duct. For crudeoil fired units, detection of liquid at all low points in the ventilated duct may be accepted as analternative

— Detected gas of maximum 20% of the LEL in engine and boiler room. This requirement may bedispensed with if the ducting has no opening (e.g. hood) into the machinery space

— Loss of ventilation in the duct— Abnormal pressure variation in the fuel supply line— Detected fire in the engine and boiler room.

General marineequipment


— Confirm that a space is pressurized to make it non-hazardous, and is provided the following minimumrequirements:

— Pressurization air is taken from a safe area— An alarm system is fitted to indicate loss of air pressure— An air-lock system with self-closing doors are fitted— An exhaust outlet is located in a non-hazardous area— A combustion air inlet is located in a non-hazardous area.

— Automatic shutdown is arranged to prevent overspeeding in the event of ingestion of flammable gas.

DNV-OS-D101 Ch.2Sec.5 [3.11]

— Confirm that the following control and monitoring arrangements are present:

— Remote indication and alarm if a brake is not released when power applied to the motors. The brakealarm shall be given by an independent mechanical sensor

— Remote indication and alarm for overheating of an electric motor— A permanent remote indication of loads during jacking and retrieval is provided. For a lattice leg unit,

the load per chord is as a minimum to be presented. Confirm that an alarm signal is given when themaximum load is exceeded.

DNV-OS-D101 Ch.2Sec.5 [3.12] — Confirm that a spin test and contact pattern test is carried out according to accepted methods.

Jacking gearmachinery

DNV-OS-D101 Ch.2Sec.5 [3.14]

— Confirm that jacking machinery is tested with the highest specified lifting and descending load. Theduration shall reflect one operating cycle.

— Confirm that the interlock is tested.

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DNV-OS-D101 Ch.2Sec.5 [5.1] DNVRules for Ships Pt.4Ch.14 I100

— Shipboard testing— After installation on board the vessel, and prior to seatrial, the steering gear shall be subjected to the

required hydrostatic and running tests. The test shall as a minimum comprise of:

— Hydrostatic testing;— Parts of steering gear that has not been pressure tested at workshop shall be tested at 1.5 times

design pressure— Assembly shall be tested at a minimum 1.5 times maximum working pressure— Function testing of the steering gear— Testing alarms and indicators— Autostart test of power units— Testing all start and stop functions— Test control transfer between bridge and local control— Test safety valve setting (if not performed during in Workshop)— Testing function and setting of overcurrent protection— Test and check functions and settings in frequency converter (if applicable)— Check mechanical rudder indicator.

— On double rudder installations where two units are synchronized by mechanical means, confirm thatmutual adjustment is tested.

Thrusters


— Confirm that alarms are provided for the following faults:

— Stop of prime mover— Power failure of remote control system— Power failure of alarm system— Low level in lubrication oil tank (if provided)— Low level in hydraulic supply tank— Low pressure in hydraulic system— High level in bilge well.

— The following additional alarms shall be provided and tested for propulsion thruster azimuth gear powerunits:

— Power failure— Phase failure— Motor overload— High lubrication oil inlet temperature.

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Windlasses,

winches andchain stoppers fortemporary or limiteduse


— Confirm that a riser disconnect system is fitted, such that it is not possible to release the anchor lineswhile risers are connected to the unit. Confirm that a special safety system preventing this is provided.

— Confirm that it is possible to carry out a controlled lowering of the wire rope / chain in case of anemergency.

— Confirm that it is possible to release the brakes or stoppers from a protected area close to the winchitself, and from a manned control room or bridge. During the emergency release, it shall be possible toapply the brakes once in order to halt the lowering and therefore releasing them again.

— Confirm that an audible alarm system exists to warn that remote operation of the windlasses or winchesshall take place.

— Confirm that winches are fitted with a load indicator, emergency stop system and an audible alarmsystem in case of overload.

Appendix F

4 Electrical installations

Appendix F


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Table 4 Electrical installations

System /equipmentdescription

DNV OS /


DNV-OS-D201Ch.2 Sec.2 [2.1]

— Confirm the main power supply system has the capacity to supply power to all services necessary formaintaining the ship in normal operation without recourse to the emergency source of power.


— Confirm that electrical supply to equipment necessary for station keeping, propulsion and steering, and toensure safety of the offshore unit, will be maintained or immediately restored in case of loss of any one of thegenerators in service, including:

— Confirmation that starting and connection to the main switchboard of the standby generator occurspreferably within 30 seconds, but not more than 45 seconds after loss of power.


— Confirm system for start, stop and load sharing between generators, if controlled by an automation system.The following alarms shall be confirmed:

— Power failure to the control system— Starting failure of prime mover— High and low frequency— High and low voltage— Excessive percentage difference in loads (kVA or alternatively both kW and kVAr) taken by the generators,

with the necessary time delay, when in symmetrical load sharing mode.

— Confirm simultaneous connection of generators on to the same bus is not possible.

— Confirm restoration of power in case of loss of any one of the generators in service.

— Confirm all generator sets are arranged with systems for starting during blackout.

Main electricpower supplysystem

DNV Rules forShips

Pt.4 Ch.3 Sec.1

I300

— Confirm that propulsion engines are tested for four (4) hours at 100% power.— Confirm that engines for auxiliary purposes are tested at 100% power for duration sufficient for conducting all

related inspections or measurements, however, not less than one (1) hour.

— Confirm insulation of hot surfaces during maximum load by measuring surface temperature.

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Switchgearand controlassemblies


— Confirm that the following tests are performed on switchgear and controlgear assemblies (may be submittedby the manufacturer):

— Function test: all basic functions including auxiliary functions— Insulation resistance test— High voltage test.

— Confirm that all circuits are verified installed as shown in the as-built documentation. Control and protectionshall be tested for correct functioning.

— Confirm that switchgear or control gear assemblies are subject to complete function tests after installationonboard.

— Confirm that switchgear and assemblies with rated voltage above 60 V is subject to a voltage test betweenthe circuits and between live parts and the enclosure. The test voltage shall be minimum equal to twice therated voltage plus 1000 V with a minimum of 1500 V. The test voltage shall be applied for 1 minute at anyfrequency between 25 and 100 Hz.

— For switchgear assemblies with rated voltage below 60V, confirm that the test voltage shall be a minimum of500 V.

— Confirm that the insulation resistance test is completed prior to and on completion of the voltage test.Confirm that the testing does not cause any reduction in the switchgear insulation level. The insulation levelshall be at least 1 MOhm.


— Confirm the emergency source of power to be automatically connected to the emergency switchboard incase of failure of the main source of electric power. If the power source is a generator, confirm that it isautomatically started within 45 seconds and supplies at least the services required by transitional power.

— Confirm the electrical power available to be sufficient to supply all services essential for safety in anemergency. Hence, the emergency switchboard and emergency distribution boards are not to be consideredas part of the main distribution system, even though supplied from such during normal operation.

— Confirm that in normal operation, the emergency switchboard is supplied from the main switchboard by aninterconnecting feeder, which shall be protected against overload and short circuit at the main switchboard,and shall be disconnected automatically at the emergency switchboard upon failure of the supply from themain source of electrical power.

— Confirm provision for the periodic testing of the complete emergency system and the testing of automaticstarting arrangements.

Emergency powersupply system


— Confirm that emergency generating sets are equipped with a starting device with a stored energy capabilityof at least three (3) consecutive starts. Confirm that a second source of energy is provided for an additionalthree (3) starts within 30 minutes, unless manual starting can be demonstrated to be effective within thistime. One starting motor is sufficient.

— The duration of each start shall be minimum 10 seconds.

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DNVRules for Ships

Pt.4 Ch.2 Sec.4

A100

— Confirm governor conditions for emergency generator sets when their total consumer load is appliedsuddenly, or;

— The total consumer load is applied in steps, subject to:

— The total load is to be supplied within 45 seconds since power failure on main switchboard— The maximum step load is declared and demonstrated— The power distribution system is designed such that the declared maximum step loading is not exceeded— The compliance of time delays and loading sequence with the above are demonstrated at ship’s trails.

DNV Rules forShips

Pt.4 Ch.3 Sec.1

I400

— Engines for auxiliary purposes to be tested at 100% power for a duration sufficient for conducting all relatedinspections or measurements, however not less than one (1) hour.

— Confirm sufficient insulation of hot surfaces during maximum load by measuring surface temperature.

Battery systems DNV-OS-D201Ch.2 Sec.2 [4.1]

— Confirm that each charging device has sufficient rating for recharging to at least 80% capacity within 10hours while system has normal load.

— Confirm that an alarm is given at a manned control station if the charging of a battery fails.— Confirm that an alarm shall be given if the battery is discharged.

— A single common alarm signal to a central alarm system may be accepted for the two (2) alarms listedhere;

— If other alarms are included in the common alarm signal, it must be ensured that an active alarm will notprevent initiation of any new alarm with its audible and visual indication.

Engines withelectric starter

DNV-OS-D201Ch.2 Sec.2 [5.1.1]

— Confirm that each battery has sufficient capacity for at least the following start attempts of the engines beingnormally supplied:

— Twelve (12) starts for each reversible engine;— Six (6) starts for each non-reversible engine connected to a reversible propeller or other devices enabling

the engine to be started with no opposing torque.— The duration of each starting shall be a minimum of 10 seconds.

— For multi-engine propulsion plants, it shall be confirmed the capacity of the starting batteries is sufficient forthree (3) starts per engine, total capacity shall not be less than 12 starts and need not exceed 18 starts.

— For auxiliary engines, it shall be confirmed that each starting battery has sufficient capacity for at least three(3) start attempts of each of the engines being normally supplied. The duration of each starting shall be takenas a minimum of ten (10) seconds.

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DNV-OS-D101Ch.2 Sec.1[2.3.13]

— Confirm that machinery can be brought into operation from the «dead ship» condition within 30 minutesusing only the facilities installed onboard.

Rotatingmachinery -general


— Confirm that electrical machines are tested at the manufacturer’s works with the tests carried out on aprototype of a machine or the first of a batch of machines. Confirm that routine tests are carried out on eachmachine.

— The type tests (TT) and routine tests (RT) that are required for generators include:

— Air gap measured or verified; visual inspection, verification of data on name plate; verification ofdegree of enclosure protection; vibration or balance of the machine including operation of the bearingor lubrication system during running tests; overspeed tests (20% in excess of rated r.p.m. for two (2)minutes); withstand voltage test (1 minute); windings resistance to be measured; temperature-risetest at full load; measurement of insulation resistance; overload or overcurrent test; measuring ofvoltage regulation during steady and transient loading and unloading (AC generator); measuring of opencircuit voltage characteristics (AC generator); measuring of short circuit characteristics (AC generator);measuring of excitation current at rated voltage, current and power factor (AC synchronous motor orgenerator); measuring of steady short circuit condition (AC synchronous generator); a steep frontedimpulse test (for high voltage machines).

— The type test (TT) and routine tests (RT) that are required for motors include:

— Air gap measured or verified; visual inspection, verification of data on name plate; verification of degreeof enclosure protection; vibration or balance of the machine including operation of the bearing orlubrication system during running tests; overspeed tests (20% in excess of rated r.p.m. for 2 minutes);withstand voltage test (1 minute); windings resistance to be measured; temperature-rise test at fullload; measurement of insulation resistance; no load current at rated voltage and frequency; overload orovercurrent test.

— Confirm that all machines are tested onboard, after installation, so that acceptable starting and runningperformance is verified with full capacity of driven equipment.

Rotatingmachinery -general

(continued)

DNV-OS-D201Ch.2 Sec.10 [4.4]

— All machines shall be tested at site, after installation, so that acceptable starting and running performance areverified with full capacity of driven equipment, alternatively full generator load.

— Confirm electrical characteristics and control of all generating sets together with their switchboard equipment(switchgear or protection and cabling) during full load test.

— Confirm engine room ventilation / airflow during full load test of all generating sets.— Confirm voltage regulation, speed governing and load sharing for of all generating sets.— Confirm overload protection, reverse power protection, overcurrent and short circuit, other protection like

earth fault, differential, undervoltage, overvoltage (if applicable) for all generating sets.— Confirm synchronizing systems for all generating sets.

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DNV Rules forShips

Pt.4 Ch.2 Sec.4

A100

— Confirm transient frequency variations in the electrical network to be less than 10% of the rated frequencywith a recovery time to steady state conditions not exceeding five (5) seconds, when the maximum electricalstep load is switched on or off.

— Confirm application of electrical load to be possible with three load steps and shall be such that prime movers- running at no load - can suddenly be loaded to 1/3 of the rated power of the generator followed by the next1/3 after an interval sufficient to restore the speed to a steady state condition.

— Finally, the sudden load step from 2/3 to full load applies. Additionally, the prime mover shall be able to takea sudden application of not less than 1/3 of full load when running at any part load below 2/3 of full power.Steady state conditions shall be achieved in not more than five (5) seconds.

— Confirm parallel running of generating sets (active load, kW) in the range of 20% to 100% of total load. Theload on any generating set shall not normally differ from its proportionate share of the total load by morethan 15% of the rated power of the largest machine or 25% of the rated power of the individual machine inquestion, whichever is the less.

Rotatingmachinery - loadsteps


— Confirm parallel running of generating sets (reactive load, kVAr) in the range 20 to 100% of the ratedreactive load of each generator. The actual reactive load (mean value, if oscillations occur) shall not differfrom its proportionate share of the total reactive load by more than 10% of the rated reactive load of thelargest generator in parallel, or not more than 25% of the smallest generator's rated reactive load, if this isless than the former.

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Powertransformers


— Confirm that transformers are tested at the manufacturer’s works with routine tests (RT) being carried out oneach transformer, and type tests (TT) carried out on a prototype or the first batch of identical transformers.

— The following routine tests (RT) are to be carried out:

— Inspection of enclosure, terminations, instrumentation or protection; measuring of insulation resistance;measuring of voltage ratio at no load and check of phase displacement; measuring of winding resistance;short circuit impedance and load losses; measuring of no-load loss and current; separate-source ACwithstand voltage test; inducted AC withstand voltage test; partial discharge measurement on transformerwindings above Um ≥ 3.6 kV, maximum level of partial discharge shall be 10 pC.

— The following type test (TT) is to be carried out:

— Temperature rise test,

— Confirm that the separate-source AC withstand voltage test involves:

— A high voltage test is applied to a new and completed transformer— The test is carried out immediately after the temperature rise test— The test is applied between each winding and the other windings, frame and enclosure all connected

together. The full test voltage shall be maintained for one (1) minute— Single phase transformers for use in a polyphase group shall be tested in accordance with requirements

for the transformers as connected together in the system— After rewinding or other extensive repair, the transformer shall be subjected to a high voltage test with a

test voltage of at least 75% of that minimum test voltage.

— Confirm that insulation resistance test is carried out and involves measuring the insulation resistance of anew, clean, dry transformer, after the temperature rise test and high voltage test have been carried out. Thetest shall be carried out between:

— All current carrying parts, connected together, and earth— All current carrying parts of different polarity or phase, where both ends of each polarity or phase are

individually accessible.

Semi-conductorconverters

DNV-OS-D201Ch.2 Sec.7 [1.2.1]

— Confirm that the converter has a capacity of at least 100% continuous load, and specified overload capacitygiven by a current of maximum duration of time.

— Confirm for motor drives (including soft starters), shall as a minimum withstand two consecutive startattempts immediately followed after stopping, or starting up from cold without being overheated.

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— Confirm that capacitors within a converter shall be discharged to less than 60 Volt in less than five (5)seconds (or a residual charge of less than 50 mC) after removal of power. If this requirement is notachievable, warning signboards shall be fitted.

— Confirm that alarm is given for power supply failure and trip of unit.— Confirm that for power supply units with batteries included, the following alarms shall be provided: when the

discharging battery fails, alternatively if the battery is being discharged; when the automatic bypass is inoperation for on-line units; operation of battery protective device.

— Confirm that converters have the possibility for monitoring the output voltage, frequency and current.— Confirm that restarting the converter in a normal manner after a blackout is possible. Manual resetting /

restarting of the unit shall not be necessary.


— Confirm that converters are routine tested (RT) at the manufacturer’s works and are carried out on eachconverter. These tests should include:

— Visual inspection; function test (UPS switch test); insulation tests (high voltage tests); insulationresistance test; control and monitoring system; cooling failure tests; pressure test of coolant piping/hoses.

— Confirm that converters are type tested (TT) at the manufacturer’s works and are carried out on a prototypeof a converter or the first batch of identical converters. These tests should include:

— Visual inspection; function test (UPS switch test); input voltage and frequency tolerance test; storedenergy and restored energy tests; insulation tests (high voltage tests); insulation resistance test; ratedcurrent test/full load test; temperature rise test; control and monitoring system; short circuit test; coolingfailure tests; capacitor discharge; pressure test of coolant piping/hoses.

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm that functional tests of semi-conductor converters for motor drivers are performed with all relevantship systems simultaneously in operation, and in all characteristic load conditions.

Control power DNV-OS-D201Ch.2 Sec.2 [8.1]

— Confirm that upon failure of the power supply to essential and important functions, an alarm is initiated. Incase of duplicated supplies, both shall be monitored.

— Confirm battery or uninterruptible power supply is provided as stand-by power supply for systems that arerequired to operate during black-out, restore normal conditions or if specific requirements specify the need.

Electricaldistributionsystems


— Confirm that each insulated, or high resistance earthed primary or secondary distribution system has a deviceor devices to continuously monitor the values of electrical insulation to earth and to give an audible or visualindication in case of abnormally low insulation values.

— Confirm that on high voltage systems, automatic disconnection is arranged for operation at 1/3 or less of theminimum earth fault current. On low-resistance earthed neutral systems, the disconnection is arranged forless than 20% of the minimum earth fault current.

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— Confirm loss of protective functions to either trip the corresponding equipment or give an alarm on a mannedcontrol position.

— Confirm interlocks when a switchboard has two incoming feeders in order to prevent simultaneously closingof both feeders when the parallel-connected short circuit power exceeds the switchboards’ short circuitstrength. A short time parallel feeding as a “make before break” arrangement is accepted when arranged withautomatic disconnection of one of the parallel feeders within 30 seconds.


— Confirm that generators are fitted with overcurrent protection such that the generator breaker trips at 110%to 125% of nominal current, with a time delay of 20 to 120 seconds. Confirm that short circuit protection isinstalled such that the breaker trips at a maximum of 1 second delay.

— Confirm that generator circuit breakers are also equipped with undervoltage protection, such that it will tripwhen generator voltage drops within the range of 70% to 35% of its rated voltage.


— Confirm equipment is designed to operate at any load up to the rated load, with a supply voltage containingthe following harmonic distortion:

— Total harmonic content not exceeding 8% of voltage RMS value; no single harmonic being greater than5% of voltage RMS value.

DNV-OS-D201Ch.2 Sec.10 [4.3]

— Confirm that all outgoing power circuits from switchboards (cables and consumers) connected duringinstallation shall undergo insulation resistance testing to verify its insulation level towards earth and betweenphases where applicable (i.e. switchboards assembled onboard).

— The insulation resistance tests (megger tests) shall be carried out by means of a suitable instrument applyinga DC voltage according to:

— Rated voltage ≤ 250 V, minimum test voltage 2 x rated voltage (V), minimum resistance 1 M-ohm— 250 < rated voltage ≤ 1000 V, minimum test voltage 500 V, minimum resistance 1 M-ohm— 1000 < rated voltage ≤ 7200 V, minimum test voltage 1000 V, minimum resistance (rated voltage / 1000)

+ 1 M-ohm— 7200 < rated voltage ≤ 15000 V, minimum test voltage 5000 V, minimum resistance (rated voltage /

1000) + 1 M-ohm.

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm that function and load tests of essential and important equipment are carried out.— Confirm settings of protective functions of consumers.— Confirm function of protective functions of consumers, if wired up during installation.— Confirm satisfactory operation (by use of tests) of the distribution in normal conditions, and in any abnormal

condition in which the system is intended to operate.— Confirm start-up and stop sequences are tested together with different operating modes and are controlled by

automatic control systems when relevant.— Confirm interlocks, alarms and indicators.— Confirm all control modes from all control locations.

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Emergency stops DNV-OS-D201Ch.2 Sec.2 [8.5]

— Confirm that at least the following pumps and fans are arranged and able to be stopped in an emergencyfrom an easily accessible position outside the space being served:

— Fuel oil transfer pumps— Fuel oil feed and booster pumps— Nozzles cooling pumps when fuel oil is used as coolant— Fuel and lubrication oil purifiers— Pumps for oil-burning installations— Fans for forced draught to boilers— All ventilation fans— All electrical driven lubrication oil pumps— Thermal oil circulating pumps— Hydraulic oil pumps in machinery space.


— Confirm monitoring with alarm for UPS is provided for power supply failure, trip of unit and earth fault (exceptdedicated system for single consumers).

— Confirm for power supply units with batteries included, that additional alarms are provided for when thebattery is being discharged, when the bypass is in operation for on-line units and operation of batteryprotective device is active. Confirm that alarms are given to main alarm system.

DNV-OS-D201Ch.2 Sec.10 [2.3]

— Confirm that the following tests and inspections are performed before batteries are put into service:

— Ventilation shall be verified, including natural ventilation;— Capacity tests, voltage measurements;— Alarms and monitoring functions.Battery / UPS

system

DNV-OS-D201Ch.2 Sec.10 [4.4]

— Confirm positive function test result for dip free voltage when feeding power is being switched off (black outsimulation) for UPS systems and regular D.C. battery backed up power supply (transitional, emergency orclean power) systems serving essential or important functions.

— Confirm correct capacity of battery backed up power supply system by running on expected load (in batteryfeeding mode) for a period determined by the requirements for the actual system and by the relevant rules(30 minutes unless specified by other Rule requirement).

— Confirm that alarms are verified for their correct function.— Confirm functional test result of semi-conductor converters for power supply with intended loading onboard.— Confirm functional tests of semi-conductor converters for motor drives with all relevant ship systems

simultaneously in operation, and in all characteristic load conditions.

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Lighting DNV-OS-D201Ch.2 Sec.2 [6.2]

— Confirm main electric lighting system to provide illumination throughout those parts of the ship normallyaccessible to, and used by, passengers or crew, and shall be supplied from the main source of electricalpower. These areas include:

— Every muster and embarkation station, survival craft and their launching appliances, and area of waterwhich they are launched;

— All service and accommodation alleyways, stairways and exits, personnel lift cars and lift trunks— All machinery spaces and main generating stations including their control positions— All control stations, machinery control rooms, locations where operation of safety equipment may be

necessary to bring the installation to a safe stage, steering gear and at each main and emergencyswitchboard

— All spaces from which control of drilling process is performed and where controls of machinery essentialfor the performance of this process, or devices for the emergency switching-off of the power plant arelocated

— All stowage positions for firemen’s outfits— At the fire pump and its starting position— At the sprinkler pump and its starting position— At the emergency bilge pump and its starting position— Floodlight and perimeter lights on helicopter landing decks— In all cargo pump rooms.

— Confirm that upon loss of main source of power, all required emergency lighting to is automatically suppliedfrom the emergency source of power.

— Confirm the navigation light switchboard (controller) to be supplied by two alternative circuits, one from themain source of power and one from the emergency source of power. A changeover switch shall be arrangedfor the two supply circuits. Confirm that upon failure of either power supply, an alarm is given.

Parallel connectedcables

DNV-OS-D201Ch.2 Sec.2 [10.6]

— Confirm that single cables, after installation, do not carry more than its capacity.— Confirm that this is demonstrated at full load of the consumer.

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High voltagecable afterinstallation

DNV-OS-D201Ch.2 Sec.10 [4.3]

— After installation, with termination kit applied, high voltage cables shall be subject to one of the followingalternative high voltage tests, with the voltage applied between the conductors and the screen:

a) When a D.C. voltage withstand test is carried out, the voltage shall be not less than:

— 1.6 · (2.5 · U0 + 2) kV for cables with U0 not exceeding 3.6 kV— 4.2 · U0 kV for cables with U0 in excess of 3.6 kV

The test voltage shall be maintained for a minimum of 15 minutes;

b) A power frequency test at the normal operating voltage of the system, applied for 24 hours.

c) A power frequency test with the phase-to-phase voltage of the system applied between the conductorand the metallic screen or earth for five (5) minutes.

Cooling and anti-condensation


— Where electrical equipment depends on additional cooling, the following shall be confirmed:

— Alarm is initiated when auxiliary cooling or ventilation motors stop running— Alarm is initiated based on winding temperature for windings in cooled equipment for essential services— Alarm is initiated based on high winding temperature in the windings in the cooled equipment for

important services.— Confirm automatic operation (on standstill condition) of heating elements for all equipment equipped

with air / water heat exchangers as well as for all high voltage converters, transformers and rotatingequipment (which are not located in heated and ventilated spaces).

DNV-OS-D201Ch.2 Sec.12 [1.3]and [1.4]

— Confirm the system to have sufficient overload capacity to provide the necessary torque, power, and for A.C.systems reactive power needed during starting (seatrial), manoeuvring (sea trial) and crash stop (seatrial)conditions.

— During crash-stop manoeuvres, it will be accepted that voltage and frequency variations exceed normallimits, if other equipment operating on the same net is not unduly affected.

Electricpropulsion

DNV-OS-D201Ch.2 Sec.12 [1.5]

— Confirm upon detection of abnormal conditions in the generators’ excitation systems, an alarm is given onthe navigating bridge and in the engine control room and automatic actions to bring the system into a safeoperational mode are executed.

Appendix F

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DNV-OS-D201Ch.2 Sec.12 [1.6]

— Confirm that a failure of the remote propulsion control system does not cause appreciable change of thethrust level or direction and not prohibit local control.

— Confirm thrust limitation of the normal propulsion remote control system when there is not adequate availablepower.

— Confirm electric power generation and distribution system to be equipped with an automatic control systemhaving at least the following functions:

— Ensure adequate power for safe manoeuvring is available at all times— Ensure even load sharing between on-line generators— Execute load tripping and / or load reduction when the power plant is overloaded— Ensure that adequate power for safe manoeuvring is available also if one running generator is tripped. If

necessary by tripping of non-essential consumers— No changes in available power shall occur if the automatic control system fails, that is no start or stop of

generators shall occur as an effect of a failure— Control the maximum propulsion motor output.

— Confirm that the control system initiates an alarm to the operator when adequate power is no longeravailable.

— Confirm that critical alarms are relayed to navigation bridge and displayed with separate warnings separatedfrom group alarms.

— Confirm that monitoring alarms are arranged for:

— High temperature of cooling medium of machines and semi-conductor converters having forced cooling— High winding temperature of all propulsion generators and motors— Loss of flow of primary and secondary coolants of machines and semi-conductor converters having

closed cooling method with a heat exchanger, when this flow is not caused by the propulsion motor itself.Auxiliary contacts from motor starters may be used for this purpose

— Lubricating oil pressure for machines with forced oil lubrication— Leakage of water-air heat exchanger for cooling of machines and semi-conductor converters— Earth fault for main propulsion circuits— Earth fault for excitation circuits (This may be omitted in circuits of brushless excitation systems and for

machines rated less than 500 kW)

Appendix F

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DNV-OS-D201Ch.2 Sec.12 [1.6](Continued)

— Fuses for filter units or for other components where fuse failures are not evident.— Confirm that a temperature indicator for directly reading the temperature of the stator windings of generators

and propulsion motors is located in the control room.— Confirm that the following values are displayed in the control room or on the applicable converter:

— Stator current in each motor— Field current in each motor (if applicable).

— Confirm the following values are displayed in the control room for each generator: A power factor meter orkVAr meter.

— Confirm that instruments are provided for indication of consumed power and power available for propulsionon the bridge and in the control room.

— Confirm at each propulsion control stand, indications, based on feedback signals, are provided for pitch ordirection of rotation, speed, and azimuth, if applicable.

— Confirm indications as listed for control stands, are arranged in the engine control room, even if no controlmeans are provided.

Electricpropulsion

(continued)

DNV-OS-D201Ch.2 Sec.12 [2.1]

— Upon completion as well as satisfactory tests of all subsystems, the electric propulsion system shall beconfirmed during sea trial where the propulsion plant shall be tested in normal and abnormal conditions.

— Confirm that start-up and stop sequences as controlled by the power management system, when relevant.— Confirm safety functions, alarms and indicators.— Confirm all control modes from all control locations.— Confirm required level of redundancy by verification through tests.

Appendix F

5 Instrumentation and telecommunication systems

Appendix F


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Table 5 Instrumentation and telecommunication systems


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Failure response DNV-OS-D202Ch.2 Sec.1 [3.2]

— Confirm that detected failures initiate alarms in the assigned manned control station.— Confirm that failure detection facilities at least cover the following failure types:

— Power failure— Sensor and actuator failures.

— For computer based systems, confirm that failure detection facilities covers the following:

— Communication errors— Computer hardware failures— Software execution failures— Software logical failures.

— Confirm fail-safe functionality to ensure the most probable failures result in the least critical of any possiblenew conditions. Special attention shall be paid to arrangement where single fire or gas detectors are usedfor each detection area, as fail safe action should be taken on instrument failure resulting in confirmed fire orgas.

Integration testing DNV-OS-D202Ch.2 Sec.1 [5.3]

— Confirm that integration tests include integration of hardware components and integration of softwaremodules into the same hardware. The integration tests to be performed with the actual software andhardware on board include:

— Hardware tests for failures— System software tests for failures— Application software tests— Function tests of normal system operation, as well as operation outside normal operating parameters— User interface tests.

Appendix F

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— On-board testing shall demonstrate, verify and document full functionality of all automation and safetysystems and shall include:

— During installation, the correct function of individual equipment packages, together with establishment ofcorrect parameters for automation and safety (time constants, set points, etc.)

— During installation and sea trials, the correct function of systems and integration of systems, including theability of the automation and safety systems to keep any EUC within the specified tolerances and carry outall safety/protective actions

— The correct distribution, protection and capacity of power supplies— Back-up and emergency automation and safety functions for essential unit / installation systems. The

tests should demonstrate that the essential installation functions are operable on the available back-upmeans of operation (as required in the relevant application standard), and in a situation where the normalsystem is disabled as far as practical.

— A copy of the approved test programme shall be kept on the installation, completed with final set points.

— The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.

— Hydraulic automation and shutdown systems with on or off regulation shall be tested with maximum returnflow to verify that return headers are adequately sized and free of blockages that could prevent correctsystem performance.

— For pneumatic and hydraulic automation systems with accumulators used to ensure fail-safe operation, testsshall include verification of accumulator charge level and capacity.

On-board testing


— Confirm main propulsion remote controls are independent of other command locations. Only one location shallbe able to be in control at a time. Confirm on each alternative location that it is indicated when this location isin control.

— Confirm transfer of propulsion remote control from one location to another (also applicable for mode change)does not result in significant alteration of process equipment parameters.

Appendix F

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— Confirm equipment under control (EUC) does not start again automatically after being stopped by safetysystem.


— Confirm that alarms indicate abnormal conditions only. In areas where the audible signal may not be hearddue to background noise, additional visual and audible display units shall be installed.

— Confirm audible alarms are distinguishable from signals indicating normal conditions.— Confirm visual alarms are distinguishable from other indications by use of colour and special representation.— Confirm responsibility for alarms not to be transferred before acknowledged by the receiving location. Confirm

transfer of responsibility gives audible warning and indicates at each individual location when this location isin charge.

— Confirm that silencing the audible signal causes the signal to cease in addition to the external rotating lights.However, the visual alarm indication on the workstation remains unchanged, normally flashing.

— Confirm that acknowledgement of the alarm causes silencing of the alarm. However, visual indication willremain in alarm state on the workstation until the alarm condition ceases. Also, an active alarm signal will notprevent initiation of any new alarm with its audible and visual indication.


— Confirm running software versions are uniquely identified by number, date or other appropriate means.— Confirm software modifications are not made without also changing the version identifier.— Confirm the record of changes to the system since the original issue and the identification information is

maintained.


— Confirm it is possible to maintain emergency operation of the vessel / units main functions independent ofnetwork status.


— Confirm that the data communication link is self-checking, detects failures and initiates an alarm ondedication workstations.


— Confirm that network (traffic) performance is continuously monitored. Alarms should be generated ifmalfunctions or reduced / degraded capacity occurs.


— Confirm the following items in a test related to network functionality:

— The main observations / items from the analysis— Self- diagnostics, alarming upon different network failures— Worst-case scenarios - network storm— Segment segregation - autonomous operation of segments— Individual controller node integrity - nodes working without network communication— Consequence of single cabinet loss.

On-board testing(continued)


— After installation, confirm that Optical Time Domain Reflectometry (OTDR) measurements for each fibre canbe used to correct and re-evaluate the power budget calculations.

Appendix F

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— Confirm piping and tubing to actuators and between actuators and local accumulators are hydrostaticallytested to 1.5 times the system design pressure for minimum 15 minutes.


— Drilling Unit / Production and Storage Unit

— Confirm back-up means of operation contains the most important action functions and alarm indicationsrelated to emergency relocation (if required), gas detection, including activation of active fire protectiondevices;

— This will typically include release of foam systems and indication of foam system status, if applicable;gas detection status indication (flammable and toxic); facilities for emergency relocation, if applicable;activation of BOP release sequence (normally located in BOP control panel).

On-board testing(continued)


— Production and Storage Unit

— Confirm power to the relevant parts of the safety system is not be tripped by the emergency shutdown(ESD) system.

Appendix F

6 Fire protection systems

Appendix F


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Table 6 Fire protection systems


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Fire divisions DNV-OS-D301Ch.2 Sec.1 [3.1]

— “H” class divisions are tested to the following standards:

— They are constructed to be capable of preventing the passage of gas, smoke and flames up to the endof the two-hour standard fire test.

— Confirm that a test of a prototype division is carried out before its classified as “H” class.

— “A” class divisions are tested to the following standards:

— They prevent the passage of smoke and flame to the end of the one-hour standard fire test.— Confirm that a test of a prototype division is carried out before its classified as “H” class.

— “B” class divisions are tested to the following standards:

— They prevent the passage of flame to the end of the first half hour of the standard fire test.— Confirm that a test of a prototype division is carried out before its classified as “H” class.

Fire protection DNV-OS-D301Ch.2 Sec.1 [2.3]

— Confirm power ventilation of accommodation spaces, service spaces, control stations, machinery spacesand hazardous areas is possible of being stopped from an easily accessible position outside the spacebeing served. The means provided for stopping the power ventilation serving machinery spaces orhazardous areas to be entirely separate from the means provided for stopping ventilation of other spaces.


— Confirm that active fire protection systems and equipment can be tested without interruption of normaloperation.


— Confirm that each pump has the capability of delivering at least one jet simultaneously from each of anytwo (2) fire hydrants, hoses and 19 mm nozzles while maintaining a minimum pressure of 0.35 N/mm2.

— Where a foam system is provided for protection of the helicopter deck, confirm the pump is capable ofmaintaining a pressure of 0.7 N/mm2 at the foam installation.


— Confirm release of the deluge systems to be possible both locally and remotely at the control stationwhere the operating status of the systems is monitored.


— Confirm that pressure drop in the sprinkler system is alarmed and automatically activates start-up of firewater pumps.

Fire fighting systems


— Confirm that the fire water monitor has sufficient movement horizontally and vertically in order to permitthe monitor to cover the complete area of protection.

— Confirm the local manual override control is possible, if remotely operated monitor is installed.— Confirm the monitor is provided with a locking device for operating in a selected position as well as

capable of both jet and spray discharge.

Appendix F

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DNV-OS-D301Ch.2 Sec.4 [3.5]/[3.7]

— Confirm that activation of any detector or manually operated call point will initiate a visual and audiblefire signal at the control panel and indicating units. If the signals have not received attention within two(2) minutes, confirm that an audible alarm is automatically sounded throughout the crew accommodationand service spaces, control stations and machinery spaces of category A.

— Confirm that the function of the detection system is periodically tested to the satisfaction of theAdministration by means of equipment producing hot air at the appropriate temperature, or smoke oraerosol particles having the appropriate range of density or particle size, or other phenomena associatedwith incipient fires to which the detector is designed to respond.

— Confirm that all detectors are of the type such that they can be tested for correct operation and restoredto normal surveillance without the renewal of any component.


— Periodically Unattended Machinery Space:

— Confirm that an approved fire detection system based on self-monitoring principals includes facilitiesfor periodical testing is installed in periodically unattended machinery spaces.

— Confirm fire detection system under varying conditions of engine operation and ventilation (activitynormally performed during sea trial – smoke tests).

Fire and gas detection


— Confirm that a fixed automatic gas detection and alarm system continuously monitors all enclosed areasof the unit in which the accumulation of flammable gas may be expected to occur.

— Confirm that gas detection system indicates both, by audible and visual alarm in the control center, thepresence of an accumulation of gas corresponding to 25% and 60% of lower explosion limit.


— Confirm that the fire pump systems are available at all times at the central control station. The firewaterpumps should start automatically upon fire detection in any area they are serving, as well as upon lowpressure in the fire water ring main.

— Confirm that fire pumps are only be capable of being manually stopped at the driver. Automatic trip isonly accepted for over-speed protection.

— Confirm that fire pump systems can operate until destruction in an emergency situation. Over-speedprotection shall be automatic reset to cater for situations where new start up is called for.

— Confirm that fire detection at the fire water pump and / or its driver area do not stop the pump or inhibitthe start of the fire pump driver.

Fire protection – oiland gas production andstorage units


— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework,provide effective fire water protection within 20 seconds of the demand.

— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and hasa local energy source for the valve actuator.

Appendix F

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— Confirm that the rate of supply of foam solution shall not be less than the greatest of the following:

— 0.6 litre / minute / m2 of storage tank deck area, where crude oil tank deck area means the maximumbreadth of the ship multiplied by the total longitudinal extent of the cargo tank spaces

— 6 litre / minute / m2 of the horizontal sectional area of the single tank having the largest such area, or— 3 litre/ minute / m2 of the area protected by the largest monitor, such area being entirely forward of

the monitor, but not less than 1250 litre / minute.

— Confirm that sufficient foam concentrate can be supplied to ensure at least 20 minutes of foamgeneration in tankers fitted with an inert gas installation, and 30 minutes of foam generation in tankersnot fitted with an inert gas installation when using solution rates given above, whichever is greatest.


— Confirm that the fire pump systems are available at all times at the central control station. Confirm thatfirewater pumps start automatically upon fire detection in any area they are serving, as well as upon lowpressure in the fire water ring main.


— Confirm that fixed fire fighting systems, including deluge valve and fire water distribution pipework,provide effective fire water protection within 20 seconds of the demand.

— Confirm the deluge valve system is activated by a signal from the fire and gas detection system and hasa local energy source for the valve actuator.


— Confirm that fire detection in areas containing gas and LNG processing facilities results in an automaticshut-down of hydrocarbon flow and ventilation for the area.

— Confirm automatic shutdown of ventilation upon detection of fire in enclosed spaces or smoke detection inventilation air inlets.

— Confirm that fire detection in the wellhead, turret, oil production or crude oil tank areas initiates anautomatic shutdown of wellhead valves and oil production facilities.

Fire protection –LNG import andexport terminals andproduction units


— Confirm that gas detection results in an automatic shutdown all hydrocarbon flow.— Confirm that a gas concentration of 25% lower explosion limit (LEL) in the air results in an automatic

shutdown of all air inlets to non-hazardous areas.— Confirm 60% LEL gas detection in the area of wellhead, turret, production facilities and storage tanks

result in the wellhead valves and production facilities shutdown.

Appendix F

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DNV Rules forShips

Pt.5 Ch.3 Sec.9

F and G

— Confirm that gas detection not higher than 10% LEL in product pump rooms and double hull spaces onfloating installations results in an audible and visual alarm signal which is automatically initiated in thepump-room, engine control room and navigation bridge, to alert personnel to the potential hazard.

— For ships with inert gas systems, confirm that two instruments for measuring O2-content, twoinstruments for measuring hydrocarbon content in the range of 0 to 20% hydrocarbon gas by volume andtwo instruments for measuring low hydrocarbon gas content 0 to 100% LEL are present. Confirm thatalarms (visual and audible) on the bridge and in the cargo control room are triggered if safe levels areexceeded.

— For ships without inert gas system, confirm that two instruments for measuring low hydrocarbon gascontent 0 to 100% LEL are provided and that alarms (visual and audible) on the bridge and in the cargocontrol room are triggered if safe levels are exceeded.

Appendix F

7 Vessel operations

Appendix F


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Table 7 Vessel operations


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Periodical test

DNV Rules for Ships

Pt.6 Ch.3 Sec.1

D200

— Confirm that testing of field instruments shall in general include the physical sensor and the whole signalloop, correct functionality, indication and alarming.

— Confirm that all field instruments for critical alarms are tested every six (6) months, unless morefrequent testing is specified by the manufacturer. The test intervals for all other field instruments shallnot exceed 12 months.

DNV Rules for Ships

Pt.6 Ch.3 Sec.2

C100

— Confirm that the alarm system including the extension alarm system is continuously powered and in caseof a loss of normal power supply, an automatic change over to a continuously available power supply willhave capacity for 30 minutes.

DNV Rules for Ships

Pt.6 Ch.3 Sec.2 C400

— Confirm that the watch responsibility transfer system initiates an audible and optical (flashing light)warning at both control positions when watch transfer is requested, and the warning shall remain inoperation until acknowledged.

General operations

DNV Rules for Ships

Pt.6 Ch.3 Sec.2 D200

— Confirm that automatic start of the standby pump is initiated by the process parameter which is beingmonitored (ie. Low-pressure signal). When a pump is standby, confirm that this is clearly indicated on theoperator panel.

DNV Rules for Ships

Pt.6 Ch.3 Sec.3

A200

— Confirm that a manual activated safety shutdown is not possible from the bridge for over-speedprotection, crankcase explosive conditions and short circuit in electrical propulsion plants.

— Confirm that the alarm for manual activation of shutdown is independent from the main alarm system.

DNV Rules for Ships

Pt.6 Ch.3 Sec.3

B100

— E0: Confirm and test individual alarms on the bridge for:

— Automatic shutdown of main boiler— Automatic shutdown and / or slowdown of propulsion machinery— Request for manual shutdown and / or slowdown of propulsion machinery— Power failure bridge alarm system— Failure in the remote control systems with respect to propulsion machinery, including controllable

pitch propeller if arranged— Failure in the remote control systems with respect to steering— Low starting air pressure for reversible propulsion engines.

— Confirm that the propulsion plant is possible to reset (propulsion machinery safety system), as well asrestart (from bridge) after blackout. Automatic or manual arrangements are both acceptable.

Class notation E0 –monitoring systems

DNV Rules for Ships

Pt.6 Ch.3 Sec.3

D100

— Confirm the number of consecutive automatic attempts, which fail to produce a start, is limited tosafeguard sufficient starting air pressure. Confirm that an alarm is provided indicating low starting airpressure set at a level that still permits starting operations of the propulsion machinery.

Appendix F

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DNV Rules for Ships

Pt.6 Ch.3 Sec.5 A100— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall be

confirmed.

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

B100

— During sea trials, testing of the remote control system for the propulsion machinery shall be confirmed.Prior to testing, the propulsion machinery shall run for at least one (1) hour.

— All tests included in the test programme for the remote control system shall be carried out withoutmanual assistance from the engine room and all systems shall be in operation as normal for unattendedmachinery space.

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

B200 / B300

— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for fixed orcontrollable pitch propeller arrangement during sea trial.

Class notation E0 –monitoring systems(continued)

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

B400

— Confirm manoeuvres, start, stop and emergency stop according to approved test programme for steamturbine arrangement during sea trial.

Ships with gasfuelled machinery

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

B500

— During sea trials, four (4) hours continuous operation with unattended machinery spaces shall beconfirmed for both gas operation mode as well as fuel oil mode (resulting in 2 x 4 hours test).

— Manoeuvres, start, stop and emergency stop according to approved test programme should be confirmedfor both gas operation mode as well as fuel oil mode.

— For LNG carriers with steam propulsion and dual fuel boilers as well as dual fuel engines of the highpressure gas injection type: testing required (four (4) hours continuous operation - manoeuvres, start,stop and emergency stop test) may be carried out with boilers fired with fuel oil only.

Other installationsfor boil-off gashandling

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

B600

— Confirm that automatic operation of gas combustion units (oxidizing units) is possible without manualsurveillance, except that start and stop may be manually initiated.

— Confirm that automatic operation for re-liquefaction plants for boil-off gas is possible without manualsurveillance.

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DNV Rules for Ships

Pt.6 Ch.3 Sec.5

C100

— Confirm that parameters are recorded for the automatic control system for auxiliary boilers tests, whichinclude:

— Steam pressure (primary and secondary system)— Water level in boiler— Automatic actions such as start and/or stop of burners, alarms, etc.

— For an automatic control system for auxiliary boilers serving turbo generators, vary the boiler load asfollows:

— Increase load from minimum to full load during a period of minimum 15 minutes— Reduce load from full load to minimum during a period of minimum 15 minutes— Increase load suddenly to minimum 50% of full load by connecting one of the greater consumers— When stationary conditions are reached, reduce load suddenly to a minimum.

— For an automatic control system for two auxiliary boilers operating in parallel, vary the boilers’ load asfollows:

— Increase load suddenly to minimum 30% of full load, by connecting one of the greater consumers.

— When stationary conditions are reached, reduce load suddenly to approximately 5% of full load and keepthat load until stationary conditions are reached.

DNVRules for Ships

Pt.6 Ch.3 Sec.5

C200

— Confirm that parameters are recorded for the automatic control system for main boilers tests, whichinclude:

— Steam flow (alternatively position of control valve);— Steam pressure;— Temperature of superheated steam;— Water level in boiler;— Water level in condenser and deaerator;— Fuel oil temperature or viscosity;— Excess of combustion air in exhaust gas.

— Confirm that the boiler load is varied in accordance with manoeuvring tests specified in B300. The boilerplant testing may be carried out simultaneously with testing of remote control system for the mainturbines.

Other installationsfor boil-off gashandling

(continued)

DNV Rules for Ships

Pt.6 Ch.3 Sec.5

C300

— Confirm the flame fault detection system by closing fuel supply to burner while in operation.— With burners in operation, confirm the automatic shutoff valve for fuel oil by shielding the flame detector.— With boiler in operation, confirm automatic stop of the combustion air fan.— Confirm that fuel oil supply is shut off after reducing water level below safety limit.— Confirm remaining boiler alarms and safety actions by simulating failures as realistically as practicable.

Appendix F

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DNV Rules for Ships

Pt.6 Ch.7 Sec.1

E100

— Confirm power systems and thruster systems have been completed as per main class test requirementand no major pending issues remaining before commencing any dynamic positioning (DP) test activity.

— Main class test requirements will at least include:— Load test according to main class— Transfer of thruster control— Manual override of thruster control— Emergency stop— Communication systems— Main alarm system as for main class and E0 (if applicable)— Integrated automation systems (if applicable).

Dynamicpositioning

DNV Rules for Ships

Pt.6 Ch.7 Sec.1

E600

— Confirm dynamic positioning (DP) functional test as per approved test programme.— Confirm DP duration test for at least eight (8) hours with the complete automatic system in operation.— Confirm DP failure modes and effects analysis (FMEA) as per approved test programme.

Appendix F

APPENDIX G SURVEY SCOPE FOR SPECIFIC CLASS NOTATIONS

1 DNV survey scope for DRILL

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Table 1 DNV survey scope for DRILL


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Drilling plant –general

DNV-RU-OU-0101

DNV-OS-E101

— This section includes instructions for surveys and tests in connection with installation of DRILL equipment andsystems. It is mainly to be used by the PMF and his / hers project task members at the yard.

— DRILL notation covers design fabrication, installation and operational aspects of offshore drilling facilities whichhave potential to effect personnel or pollution of the environment.

— DRILL notation requires certification of drilling equipment and systems, and approval of complete drilling plant,which includes at least the following:

— Drilling arrangement— Piping and instrumentation— Power supply— Equipment interface.

— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This shouldbe confirmed prior to testing of complete systems.

— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written testprocedures accepted by the Surveyor.

— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should “Note”the program and ensure that the rule requirements are complied with, as a minimum.

— Although most equipment will normally have undergone shop testing at the manufacturer, it is important toensure that equipment has not been damaged under transportation and has been assembled, installed andintegrated in the correct manner. Also, time between equipment fabrication and installation onboard can beconsiderable.

— Functional testing of systems is to be carried out, as far as possible, under working conditions.

— SIT test to be carried out.

— In connection with installation of heavy equipment, special attention should be paid to fixation and support.

— Units with DRILL /DRILL(N) class should have equipment lists for all category I equipment. The list shouldinclude DVR and PC numbers with name of maker and equipment.

— A copy of all the PC’s shall be filed at the local station.

— DNV-OS-E101 makes reference to other standards. In particular, A101 and Escape way, F and G/ESD needs to beaddressed as it’s always a problem on site.

— Communication / PA is not addressed.

Drillingstructures –derrick

DNV-OS-E101Ch.2 Sec.5 [2.1] — Confirm satisfactory fastening of derrick fixtures, special attention to fixation and support of heavy equipment.

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Drill floor andsub-structures

DNV-OS-E101Ch.2 Sec.5[2.3]/[2.4]

— Check satisfactory sea-fastening arrangement.— Lifting lugs / pad eyes, if covered by Class.

Well controlsystems –

Blowoutpreventer stack

DNV-OS-E101Ch.2 Sec.5 [3.2]


— Leak / pressure test to demonstrate function of rams, annular elements, valve gates and C/K connections. Testingshould be carried out at low pressure (2-300 psi) and rated working pressure.

(Note: For testing of the pipe rams and annulars, a suitable test tool should be used, suitably anchored to thetest stump).

— Complete function testing of the BOP including all preventers, connectors and fail-safe valves (using theaccumulator system, not only the stack-mounted accumulators).


Blowout controlsystem



— Leak / pressure testing of installed hoses and piping.— Operate all BOP functions from main control station and remote locations.— Confirm satisfactory operation from either pod.— Verify independence of the two mutually independent control systems for electrical or computer based BOP

control systems.— Verify that the system resumes normal operation automatically when started or reset.— Check flow rates and response times.— Check actual volumetric capacity of accumulator unit (usable volume) and compare with required volume.— Check alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot pressure,

low fluid level, autostart / autostop of pumps, and loss of power supply.— Check function in emergency shutdown situations.— Test acoustic panel (if installed).— Check calibration of manometers and thermometers.— Confirm safety valves (or temperature sensitive fuse plugs) on the accumulator nitrogen charging side.— Check calibration of pressure gauge flow meters.— Check operation of the regulator for closing pressure in case of loss of rig air.— Confirm pre-charge pressure of the accumulators. This can be accomplished by completely draining the units and

witnessing a sudden pressure drop when they are emptied.— Confirm emergency power supply for remote panel operation. Normally, remote panels are powered by 24V

DC batteries, which are continuously trickle charged. Confirm that loss of charging will give alarm but allowuninterrupted operation by the batteries.


diverter


— Function test dogs on fixed support housing.— Leak test to confirm tightness of seals.— Operate all functions from main and remote panels.— Confirm valve sequence interlock (opening of overboard valve prior to closure of annular and mud system

valves).

Appendix G

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choke and killsystem


— Valve seat sealing test at low pressure (approx. 200-300 psi) and rated working pressure.— Confirm operation of manual and remote chokes.— Confirm that manifold gauges and driller’s gauges correctly calibrated.— Function test of the Emergency Circulation Pump (normally the diesel driven cementing unit), including starting

the pump and the alignment / operation of necessary valves under a (simulated) Black-Ship condition.— Pressure testing to maximum working pressure, including all high pressure (HP) piping and flexible hoses.— Confirm calibration of manometers and thermometers.

Marine risersystem –

workover risersystem


DNV-OS-E101Ch.2 Sec.6 [3]

— Riser joints:

— Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;— Pressure test to max working pressure (of choke, kill and booster lines).

— Telescopic joint:

— Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;— Pressure test to confirm sealing at gooseneck connections.

— Flex joint:

— Visual inspection to confirm no damage to sealing surfaces or distortion of pipes;— Pressure test to confirm sealing.

— Riser wellhead connector:

— Function testing of mechanisms for lock, unlock and disconnect;— Leak / pressure testing of control hoses.

Heavecompensatingsystem


— Pressure testing to max working pressure of installed piping and flexible hoses.— Confirm full extension of hydraulic cylinders.— Confirm safety valve setting.— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.— Confirm operation of main valve control and indicators (weight and pressure).— Confirm operation of isolation valve control and indicators.— Confirm alignment and spacing of crown block guide wheels.— Confirm operation of crown position indicator.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Riser tensioningsystem


— Pressure testing of installed piping and flexible hoses.— Stroking of tensioners to confirm free movement.— At full stroke, apply full system air pressure and check for leaks.— Confirm safety valve setting.— Alignment and free movement of sheaves to be confirmed.— Retractable sheaves to be load tested at full extension.— Operation of hydraulic and pneumatic systems to be confirmed.— Check clamping of wires to be carried out satisfactorily.— Confirm operation and safety features of any dedicated compressors or auxiliary machinery.— Verify proper functioning of slingshot valves.— Perform a function test on the tripsaver trolley over the full track length.— Perform a load test on the tripsaver trolley.— Confirm operation of limit switches, bumper stops, and parking bolts.

Hoistingequipment

DNV-OS-E101Ch.2 Sec.5[5.1]/[5.2]

— Confirm satisfactory fastening of derrick fixtures.— Confirm satisfactory functioning of guide dollies (especially retractable dollies).— Check calibration of deadline, load cell, etc.— Confirm correct torque of deadline clamp bolts.— Confirm operation of draw works main and auxiliary brakes.— Confirm operation of crown saver device.— Load test air winches to confirm correct installation and anchoring.— Confirm calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).

Rotatingequipment

DNV-OS-E101Ch.2 Sec.5[5.1]/[5.3]

— Confirm operation of rotary table safety features (e.g. purge).— Confirm calibration of driller’s console torque and RPM.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


BOP and pipehandlingequipment


— All lifting appliances shall be tested in “as installed” condition prior to first use.— Load test as applicable.— Load test of pipe handling crane. The test load shall be hoisted, slewed and luffed at slow speed through the

entire operating range.— Function testing of all safety features.— Check operation of parking bolts, limit switches, and bumper stops.— Confirm hoisting and traversing over full track length.— Tests for lifting appliances where safe working load (SWL) varies with operating radius, shall generally be

performed with the appropriate test load at maximum, minimum and at an intermediate radius.— Function test upper racking arm in all positions.— Test operation of spears.— Function test intermediate racking arm.— Confirm operation of standby cylinder under load.— Confirm operation of drill floor manipulator arm.— Confirm operation and safety features of hydraulic power unit.— Perform functional test of fingerboard.

BOP overheadcrane


— All lifting appliances shall be tested in “as installed” condition prior to first use.— Load test of main and auxiliary hoists. Check main girder for excessive deflection.— Gantry and travelling cranes together with their trolleys, as applicable, shall be traversed and travelled over the

full length of their track.— Check hose reel operation.— Pressure test installed high pressure (HP) piping.— Check operation of parking bolts, limit switches, and bumper stops.— Check calibration and sealing of load limiting valves (air pressure regulators or hydraulic PSVs).

BOP bulkheadguide


— Check traversing operation.— Check hose reel operation.— Check gripper function.— Check parking bolt function.— Check operation of hydraulic cylinders.— Check parking bolt arrangement.— Check unobstructed travel of frames.

BOP baseplatetrolley


— Perform load test, especially in cantilevered position.— Confirm travel from storage position to cantilevered position.— Confirm operation of hose reels.— Confirm operation of parking bolt arrangement.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


BOP carrier andskid


— Function test BOP carrier or skid with BOP installed over full track length.— Confirm function of sea fastening equipment.— Confirm operation of hose reels.— Confirm operation of limit switches, bumper stops, parking bolts.

Bulk storage,mud andcementingsystem –

Bulk storage

DNV-OS-E101Ch.2 Sec.5[7.1]/[7.2]

— Pressure test to max working pressure (WP) of installed piping.— Pressure test pressure vessels to max WP.— Confirm operation and safety features of any dedicated compressors.— Confirm bulk transfer routes operate satisfactorily (may use air as medium).— Confirm operation of remote control valves and control panels.— Confirm safety valve setting.— Confirm operation of instrumentation (level alarms).— Confirm possibility to purge vent lines to prevent clogging on discharge side of the tanks safety valves / rupture

discs.


Mud system

DNV-OS-E101Ch.2 Sec.5[7.1]/[7.3]

— Pressure testing to max working pressure (WP) of installed piping and flexible hoses.— Pressure test pressure vessels to max WP.— Pressure testing of standpipe manifold and mud system valves. Valve seat seal to be confirmed at low pressure

(2-300 psi) and rated working pressure.— Calibration of mud standpipe gauges and driller’s gauges to be confirmed.— Perform pressure test of rotary hose and swivel.— Confirm mud pump safety valve setting.— Confirm system for monitoring mud return flow rate.— Function test and pressure test, both low pressure (LP, 200-300psi) and max WP, of Kelly Cocks, IBOP, and valves

in drill string.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /



Cementingsystem

DNV-OS-E101Ch.2 Sec.5[7.1]/[7.4]

— If the cement unit is the emergency pump, confirm crossover to mud system.— Pressure test to max working pressure (WP) of installed piping and flexible hoses.— Pressure test cement manifold and system valves. Valve seat seal to be confirmed at low pressure (2-300 psi)

and rated working pressure.— Confirm pressure safety valve settings.— Confirm calibration of manifold gauges and driller’s gauges.— Safety functions of diesel engine to be tested (overspeed, high exhaust temperature, high cooling water

temperature, and low lube oil pressure).— If the cement pump is the emergency kill pump, the starting system for the diesel engine is to be reviewed

to ensure that the engines can start without use of the rig’s air system. Special attention is to be paid to non-return valves, if fitted between start air bottles and rig air systems. For diesel engines located in zone 2 areas,the safety functions on the engine are to be tested. Typically, these are lube oil low pressure, cooling water hightemperature and the overspeed trips.

— Confirm insulation of the exhaust gas manifold.

Well testing andassociated wellcontrol system


— Pressure test to max working pressure (WP) of installed piping and flexible hoses.— Pressure test pressure vessels to max WP.— Confirm settings of safety valves and where the discharge from the valve proceeds to (i.e. burner boom or open

air).— Confirm safety features (e.g. level controls, fire and gas detection).— Complete a full functional testing of the associated safety systems and ESD system.— Perform a function test of the fixed deluge system, cooling system on burner booms and rig side, and fire

monitors.— Verify drainage system in well test area.— Confirm calibration of manifold gauges and control room gauges.— Confirm operation and safety features of any dedicated compressors.— The burner boom shall be tested with an overload of 25% related to the required weight of burner and spreader.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Man ridingequipment

DNV-OS-E101Ch.2 Sec.5 [9.1]to [9.5]

— All lifting appliances shall be tested in “as installed” condition prior to first use.— The test load shall be hoisted, slewed and luffed at slow speed through the entire operating range, as applicable,

for the lifting appliance in question.— Perform static brake capacity test for all brakes operating simultaneously at 2 ´ safe working load (SWL).— Perform static brake capacity test for each individual brake at 1.8 ´ SWL.— Perform dynamic brake capacity test for each individual brake at 1.25 ´ SWL.— Confirm operation of two independent locking devices.— Confirm emergency stop function.— Confirm that system is reset to function after an emergency stop.— Confirm that slack wire detection is functioning.— Confirm that load limiting devices and limit switches are functioning.— Confirm override possibilities between local and remote controls.— Confirm functioning of emergency hoisting system (if operating under deck or over open sea).— Confirm emergency lowering and hoisting functionality.— Confirm that at least three (3) turns of wire rope is remaining on the man riding winch drum at the lowest

possible operating position.


— Perform load test.— Function test skid or carrier with overload over full track length.— Confirm operation of limit switches, bumper stops, parking bolts.

Other systems –

Winches DNV-OS-E101Ch.2 Sec.5[10.1]

— Perform load test.— Confirm that winches are shielded for personnel protection and marked with safe working load (SWL).— Confirm correct function of operating handle or equivalent (e.g. push buttons).— Confirm functionality of automatic brake.— Confirm emergency lowering function of the lifting device.— Confirm load limit device and pressure safety valve setting.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


High pressurepiping –

All pipingsystems


DNV-OS-D101Ch.2 Sec.6[6.1], [6.2] and[7.1]

— Where valves are provided at watertight boundaries to maintain watertight integrity, these valves shall be capableof being operated from a control room. Valve position indicators shall be provided at the remote control station.

— For remotely controlled valves, failure in power supply (electrical, hydraulic, and pneumatic) shall not cause:

— Opening of closed valves, closing of open valves on fuel oil tanks and in cooling water system for propulsionand power generating machinery.

— Hydrostatic testing - all valve bodies shall be subject to a hydrostatic test by the manufacturer at a pressureequal to 1.5 times the nominal pressure (the nominal pressure is the maximum allowable working pressure atroom temperature). The following regulations are required:

— The test pressure need not be more than 70 bar in excess of the nominal pressure;— For valves fitted on unit or installation’s side and bottom, the test pressure shall not be less than five (5) bar;— For butterfly valves fitted on unit or installation’s side and bottom, shall also be hydrostatically tested at a

pressure equal to five (5) bar applied independently on each side of the closed disc.

— Hydrostatic testing after assembly onboard - The piping shall be hydrostatically tested in accordance with thefollowing:

— Fuel oil piping, heating coils in tanks, bilge, ballast and fire pipes, steam pipes, compressed air pipes and feedpipes of class III - 1.5 maximum working pressure, minimum four (4) bar.

— Hydraulic piping - 1.5 maximum working pressure. Test pressure need not exceed working pressure by morethan 70 bar.

— Piping systems made from non-metallic material - 1.5 maximum working pressure, minimum six (6) bar,minimum duration one (1) hour.

— All piping systems shall be properly flushed, checked for leakage and functionally tested under workingconditions.

— Function testing of closure devices i.w.o. watertight boundaries from control room / station - positive remoteconfirmation of the same.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


High pressurepiping –

General

DNV-OS-E101Ch.2 Sec.3 [2.1]to [2.5]

— Monitor the yard’s system to document the fabrication process with reference to each spool and weld joint.This recording should contain material verification status, fit-up, edge penetration, WPS number, stress relief,hardness testing (for sour service), pressure testing, NDE and final inspection.

— All piping including fittings, flanges, valves, etc., shall be checked for correct schedules and rating.— Dimensions of all prefabricated pipework are to be checked against the spool drawing of latest revision.— Confirm that flanges are square to pipework. The flange face flatness shall be checked.— The fit-up shall be checked with particular attention to alignment, root gap, crack in tag weld, bevel configuration

and cleanliness.— Special attention should be paid to systems which may be assembled of fittings and piping with poor weldability

and heavy thickness.— The distance between two buttwelds, defined as the minimum distance between fusion lines at the surface of

the welds, should not be less than ten times the wall thickness, minimum 50 mm. In addition, the weld distanceshould be sufficient to avoid high preheating temperatures (100°C) on completed welds.

— Special attention should also be paid to penetration of high pressure pipes through steel bulkheads. No welding isto be performed in high pressure pipes.

— In areas where the temperatures are fluctuating (e.g. on deck), pipe lengths are to be given expansionpossibilities. For such pipes, the flexibility of support is important.

— Pressure testing is to be witnessed.

Electricalsystems andcomponents

DNV-OS-E101Ch.2 Sec.4 [2.1] See section on Electrical Installations for requirements.

Appendix G

Class guideline —


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missioning

DNV AS


DNV OS /


Instrumentation,control andmonitoringsystems


— See section on Instrumentation and Telecommunication systems for requirements.— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems

and shall include:

— During installation, the correct function of individual equipment packages, together with establishment ofcorrect parameters for automation and safety (time constants, set points, etc.);

— During installation and sea trials, the correct function of systems and integration of systems, including theability of the automation and safety systems to keep any equipment under control (EUC) within the specifiedtolerances and carry out all safety / protective actions;

— The correct distribution, protection and capacity of power supplies;— Back-up and emergency automation and safety functions for essential unit/installation systems. The tests

should demonstrate that the essential installation functions are operable on the available back-up meansof operation (as required in the relevant application standard), and in a situation where the normal systemis disabled as far as practical. A copy of the approved test programme shall be kept on the installation,completed with final set points.

— The test program for harbour and sea trials shall be approved prior to tests by the Approval centre.

— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum returnflow to verify that return headers are adequately sized and free of blockages which could prevent correct systemperformance.

— For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shallinclude verification of accumulator charge level and capacity.

Appendix G

2 DNV survey scope for PROD

Appendix G


DNV AS

Class guideline —


ctober 2021


missioning

DNV AS

Table 2 DNV survey scope for PROD


DNV OS /


Oil and gasprocessing plant– general

DNV-RU-OU-0102

DNV-OS-E201

— This section includes instructions for surveys and tests in connection with installation of process topsides (PROD)equipment and systems. It is mainly to be used by the PMF and his / hers project team members at the yard/site.

— PROD notation covers design fabrication, installation and operational aspects of offshore production facilitieswhich have potential to effect the safety of personnel, the safety of the vessel or pollution of the environment.

— PROD notation requires certification of production equipment and systems, and approval of complete productionplant, which includes, as applicable, the following:

— production and export riser systems— well control system— riser compensating and tensioning system— hydrocarbon processing system— relief and flare system— production plant safety systems— production plant utility systems— water injection system— gas injection system— storage system— LNG Liquefaction system— crude offloading system— LNG regasification system— LNG transfer system.

— It is essential that the main boundaries of the production plant are known and clear to all parties, as applicable,these may be:

— riser shutdown valve— control system connection to sea floor system— connection to production buoy— shutdown valve at crude outlet from production plant to crude storage or loading buoy— shutdown valve between liquefaction plant and LNG storage tanks— shutdown valve between LNG storage and regasification plant, and between regasification plant and export

line.

Appendix G

Class guideline —


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missioning

DNV AS


DNV OS /


Oil and gasprocessing plant– general

(continued)

DNV-RU-OU-0102

DNV-OS-E201(Continued)

— It is important to ensure that equipment installed onboard is certified in accordance with the Rules. This shouldbe confirmed prior to testing of complete systems.

— Testing of systems and equipment specified in the Rules is to be carried out in accordance with written testprocedures accepted by the Surveyor.

— Such test programs may contain testing that exceeds the Rule requirement; however, the Surveyor should“Note” the program and ensure that the rule requirements are complied with, as a minimum.

— Although most equipment will normally have undergone shop testing at the manufacturer, it is important toensure that equipment has not been damaged under transportation and has been assembled, installed andintegrated in the correct manner. Since time between equipment fabrication and installation onboard may beconsiderable, preservation and calibration issues may be present.

— Functional testing of systems is to be carried out, as far as possible, under working conditions.— SIT test to be carried out.— In connection with installation of heavy equipment, special attention should be paid to fixation and support.— Units with PROD class should have equipment lists for all category I equipment. The list should include DVR and

PC numbers with name of maker and equipment.— A copy of all the Product Certificate’s shall be filed at the local station.— For European situated units, and/or where DNV act’s as the Notified Body, European Directive requirements for

equipment will also apply for the topsides only. E.g Pressure Equipment (PED) Directive (97/23/EC), PotentiallyExplosive Atmospheres (ATEX) Directive 94/9/EC

— DNV-OS-E201 makes reference to other standards. In particular, DNV-OS-A101 and Escape routes, F and G/ESDrequirements to be addressed.

Main productionstructures –process modules

Control rooms

Other topsidepackages i.e.

Meteringpackage

Deck boilers

Powergeneration

Etc.


— Confirm satisfactory fastening of module structures and equipment to support stools and secondary structures.— Lifting lugs / pad eyes, if covered by Class.— Confirm required structural PFP installed as per design requirements— Rotating equipment mounts to be verified for acceptable vibration.— Coatings verified to design— Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)

Other secondaryand tertiarystructures


— Confirm satisfactory integration and fastening arrangement.— Escape route arrangements to be verified. (Include lighting, surface coatings, marking etc.)— Coatings verified to design

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Wellhead controlsystems –

Surfacecontrolledsubsea safetyvalves and risers


DNV-OS-E201Ch.2 Sec.4

A100

— Ensure all mechanical and accidental impact protection for the riser system is provided as per design.— Confirm required PFP installed as per design requirements— Leak / pressure testing of installed risers, hoses and piping. Pressure testing to maximum working pressure.— Leak testing of SCSSV to be verified with code allowable limits (APR RP 14F)— Function test SCSSSV to confirm limit switches operate and time for closure is within code requirements.— Confirm correct valve position indication is provided— Confirm hydraulic oil cleanliness following installation and flushing.— Confirm hydraulic oil return is provided with hydrocarbon contamination protection.— If hydraulic oil is drained to sea on closure, confirm oil type is environmentally benign.— Confirm acoustic or other initiation system (if installed)

Wellhead con-trol systems –

Riser tensioningand dis-connectionsystems



— Where emergency disconnection of flexible risers is provided, important functionality shall be tested.— Confirm ability to test without actual disconnection.— Ensure all mechanical and accidental impact protection for the riser system is provided as per design.— Confirm required PFP installed as per design requirements— Disconnection to be tested from main control room and locally.— Disconnection shut off valve sequence to be verified before simulated disconnection occurs.— Critical components and functions of riser tensioning system to be verified e.g.

— Confirm alarms (visual and audible) for riser system excursions outside permissible design limits.

Wellhead controlsystems –

Surfaceproduction treeand wellheadcontrol



— Confirm all mechanical and accidental impact protection is provided as per design.— Confirm required PFP installed as per design requirements— Leak / pressure test to demonstrate function wing and master valves.— Complete function testing of the Surface Production Tree to ensure all piping components and instrumentation

have been installed in accordance with P&ID’s and all relevant set points are correct.— Confirm wellhead control panel functionality.— Confirm hydraulic oil type, cleanliness, levels in wellhead control panel.— Confirm sequence and independence of production tree and subsea valve closure. Verify correct valves close

upon initiation from the ESD system depending on ESD level. (i.e. low level ESD may only close wing valve)— Confirm complete isolation of wells within performance criteria.— Confirm controlled shutdown of wellhead valves on loss or reduced supply pressure to wellhead panel.— Confirm alarms (visual and audible) for low accumulator pressure, low rig air pressure, low manifold pilot

pressure, low fluid level, autostart / autostop of pumps, and loss of power supply, as applicable.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Turret systemand

swivel stack

— Confirm swivel barrier protection system— Turret bearing lubrication system— Turret bearing maintenance arrangements.— Slip ring commissioning test in accordance manufacturer requirements.— Confirm monitoring and control arrangements.— Configuration of the turret could have significant bearing on extent of commissioning tests therefore it is

important to consider the manufacturers test programme carefully to evaluate level of commissioning tests toverify.

Productionseparationsystem

— Confirm module integration piping is complete, installed as per P&IDs, correctly supported; flange managementprocesses satisfactorily completed and leak testing of complete integrated system is completed.

— Confirm dropped object protection (or procedural controls) are in place.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been

installed in accordance with P&ID’s and all relevant set points are correct.— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with

P&ID’s.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Relief,blowdown anddepressurisingsystems


— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange managementprocesses satisfactorily completed and leak testing of complete integrated system is completed.

— Confirm that the blowdown valves, blowdown restriction orifice and blowdown/cold vent piping (including sizingand approximate routing) has been installed in accordance with the design.

— Complete function testing of the PSD system to ensure all piping components and instrumentation have beeninstalled in accordance with P&ID’s and all relevant set points are correct.

— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.(Particular focus around relief and blowdown valves)

— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance with

P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Confirm by tests that blowdown valves operate within the desired time period, in the correct valve sequence.

(Ideally a full live system blowdown test is be conducted however it may be undesirable to conduct this testfollowing startup with the plant finally in a steady state so an alternative would be to review real time datalogged by the control system of a blowdown event at some time after startup.

— Confirm that blowdown valves open when pressure in their respective actuating media is lost (including pressurein local energy storage devices if provided) or loss of signal from the ESD system, i.e normally energized.

— Confirm relief valve interlocking arrangement or procedures.— Confirm and test knock out drum set points.— If not routed to the flare system, confirm other relief devices route to safe location as per drawings particularly

hazardous area drawings as applicable.— Confirm cold vents are provided with weather protection.— Confirm cold vents provided with local fire system, and tested.— Confirm relief and blowdown piping is self-draining, there are no restriction to flow (other than properly sized

orifaces) and that drain points are provided at unavoidable low points.— Confirm flare pilot is supplied from two sources of pilot gas.— Confirm redundant ignition system operates effectively i.e. simulate flame out— Confirm purging/snuffing arrangements are available and proceduralised.— Confirm heat radiation is within acceptable levels, post startup.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Gas treatmentand compressionsystems



— Confirm necessary heat tracing, heat conservation and personnel protection is installed in accordance withP&ID’s.


installed in accordance with P&ID’s and all relevant set points are correct.— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.

(Particular focus around relief and blowdown valves)— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Off specification fuel gas trips to be confirmed.

Water and gasinjection



— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed inaccordance with P&ID’s.



(Particular focus around relief and blowdown valves)— Confirm inhibits and non-standard system configurations are correctly recorded in accordance with procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in

accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.— Confirm correct installation of non-return valves at injection points to wellhead— Test injection point ESD valve.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Packagedrotatingequipment i.e.compressors,water injectionpumps, turbines

— Confirm location of manual release buttons— Confirm location, numbers and type of fire detectors— Confirm correct functioning of interlocks on doors, if applicable— Confirm the sequencing of fire detection, rotating equipment shutdown, fire dampers closing and fire

extinguishing— Confirm air tightness, differential pressure of enclosure— Verify site connected piping, i.e. fuel, lube oil to be correctly installed, hydro tested, flushed/cleaned that all

exterior surfaces are below 220°C at steady state.— Verify critical unit control panel trips and intertrips to ICSS/PSD/ESD systems.— Ensure manufacturer approved test programme followed.— The vibrations in the entire speed range to be confirmed as insignificant.— Check for leakage of lube oil and fuel oil before, during and after the commissioning trial.— Check that all ancillaries and piping are visually inspected for vibration during testing. Checks to be done at all

different load conditions to detect resonance problems and identify an new support requirements.— Refer to appendix F.4 Electrical Installations for generators and turbines

Water treamentand disposal


— Confirm oil in water analyser is installed, calibrated and functional. Off specification recycle arrangementoperational.

— Confirm overboard dump arrangement, i.e. hazardous area.

Heating andcooling systems


— Confirm hydrocarbon leakage detection systems are installed and operational.— Confirm module integration piping is complete, installed as per P&IDs, correctly supported, flange management

processes satisfactorily completed and leak testing of complete integrated system is completed.— Complete function testing of the PSD system to ensure all piping components and instrumentation have been


(Particular focus around relief and blowdown valves)— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with

procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in

accordance with P&ID’s.— Confirm dropped object protection (or procedural controls) are in place.

Chemicalinjectionsystems


— Confirm injection devices (quills) are installed correctly i.e. correct part of the process stream.— Confirm non-return valves are installed.— For wellhead injection, automatic shutdowns valves to be tested.— Confirm chemical storage area is correctly bunded.— Confirm safety shower and eyewash arrangements.— Confirm any additional fire fighting requirements for specific chemicals i.e. methanol resistant foam

Appendix G

Class guideline —


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DNV AS


DNV OS /


Drainagesystems


— To be installed under process equipment where spillage or minor leaks could occur i.e.

— atmospheric tanks and pressure vessels with multiple flanges and instruments— pumps— heat exchangers— rotating machinery— sample points— offloading system— pig receivers and launchers, etc.

— Confirm drip trays drain point installed on opposite corners of the drip tray to allow for vessel motions. Confirmliquid seal arrangement (or other method to prevent gas migration) is installed and liquid level checked.

— Confirm open deck drainage system is correctly installed and operational for each module (probably duringdeluge test).

— Confirm segregation between hazardous and non-hazardous open drain systems.

— Confirm drain tank vent arrangements i.e. safe location, blanketing, weather protection, flame arrestors, dippipes.


— Complete function testing of the PSD system to ensure all piping components and instrumentation have beeninstalled in accordance with P&ID’s and all relevant set points are correct.

— Confirm valve ‘locked open’, ‘locked closed’ requirements are correctly implemented in accordance with P&ID’s.(Particular focus around relief and blowdown valves)

— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance withprocedure.

— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed inaccordance with P&ID’s.

— Confirm dropped object protection (or procedural controls) are in place.

Appendix G

Class guideline —


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DNV AS


DNV OS /


Export system



— Confirm offloading arrangement is located the required distance from the accommodation and associated accessways and air intakes.

— Confirm floating hoses and hawser are arranged such that foaling of propellers or other system is not possible.— Confirm external offloading shutdown arrangements, i.e. telemetry/radio signal from shuttle tanker

arrangements, hawser tension monitoring, relative positioning monitoring, and receiving terminal, as applicable.— Confirm hose real locking mechanism.— Confirm hose draining procedures.— Confirm offloading shutdown via ESD from pushbuttons and CCR.— Confirm offloading control station operation.— Confirm offload/export pump protection systems, set points and response times are correctly implemented.— Complete function testing of the offload/export system to ensure all piping components and instrumentation

have been installed in accordance with P&ID’s and all relevant set points are correct.— Confirm normal, automatic and manual emergency release mechanisms.— Minimum flow recycle and non-return valve arrangements to be verified.— Confirm inhibits, overrides and non-standard system configurations are correctly recorded in accordance with

procedure.— Confirm necessary winterisation, heat tracing, heat conservation and personnel protection is installed in

accordance with P&ID’s.— Confirm arrangement for pig launchers and receivers, i.e. interlocks, instrumentation and bleed arrangements to

prevent inadvertent opening while pressurised.

Ventilationarrangements –external rooms

DNV-OS-D101Ch.2 Sec.4[11.1]

— Confirm overpressure ventilation arrangement including alarms at manned location.— Confirm air intake fire and gas detection arrangements and related fire damper closure times, fan trips.— Confirm gas tight door self-closing mechanisms. Escape hatches to be checked.— Confirm electrical conduits are suitably sealed.— Confirm air intakes are located 3m outside hazardous areas.

Electricalsystems andcomponents

DNV-OS-D201

DNV-OS-A101

— See section on Electrical installations for requirements.— Confirm hazardous area drawing accurately reflect release sources and ventilation arrangements— Confirm that equipment and structures are suitable earthed.— Confirm the electrical equipment suitable for hazardous area is suitable rated (EX certification)

Appendix G

Class guideline —


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DNV OS /


Inert gassystem

DNV Rules forShips Pt.5 Ch.3Sec.11

— Confirm installation of inert gas piping system in accordance with approved drawings.— Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of— not more than 5% at the correct flowrate, temperature and pressure.— Confirm that the cargo tank blanketing system (IG system) maintains an oxygen deficient atmosphere in the

cargo tanks under all foreseeable operating conditions. Oxygen content not exceeding 8% by volume. Confirmacceptable dilution in cargo tanks.

— Confirm valve locking and interlocking arrangement or procedures.— Confirm pressure/vacuum breaking devices installed.— Confirm deck seal supply pump is running and maintaining levels in the deck seal.— Confirm the inert gas system is capable of supplying a gas or mixture of gases with an oxygen content of— not more than 5%— Confirm all instrumentation feedback to the Inert gas control system is functioning and integrated where

appropriate with ICSS/ESD/PSD system.— Portable instruments for measuring oxygen and flammable vapour concentration to be provided and used to

verify instrumentation readings.

Instrumentation,control andmonitoringsystems


DNV-OS-D202

— See section on Instrumentation and Telecommunication systems for requirements.— On-board testing shall demonstrate, verify and document full functionality of all automation and safety systems

and shall include:

— During installation, the correct function of individual equipment packages, together with establishment ofcorrect parameters for automation and safety (time constants, set points, etc.)

— During installation and sea trials, the correct function of systems and integration of systems, including theability of the automation and safety systems to keep any equipment under control (EUC) within the specifiedtolerances and carry out all safety / protective actions;

— The correct distribution, protection and capacity of power supplies— Back-up and emergency automation and safety functions for essential unit/installation systems. The tests

should demonstrate that the essential installation functions are operable on the available back-up meansof operation (as required in the relevant application standard), and in a situation where the normal systemis disabled as far as practical. A copy of the approved test programme shall be kept on the installation,completed with final set points.

— Hydraulic automation and shut-down systems with on or off regulation shall be tested with maximum returnflow to verify that return headers are adequately sized and free of blockages which could prevent correct systemperformance.

— For pneumatic and hydraulic automation systems with accumulators used to ensure fail safe operation, tests shallinclude verification of accumulator charge level and capacity.

Appendix G

Class guideline —


ctober 2021


missioning

DNV AS


DNV OS /


Instrument airsystem


— Confirm generator integration piping is complete, installed as per P&IDs— Confirm small bore tubing is complete, installed as per P&IDs, correctly supported.— Confirm dew points, liquid traps and regulator set points correct.

Nitrogengenerationsystem

DNVRules for ShipsPt.5 Ch.3

— Confirm generator integration piping is complete, installed as per P&IDs, correctly supported; flangemanagement processes and small bore tubing satisfactorily completed and leak testing of complete integratedsystem is completed.

— Confirm 02 detection operational.

Escape andcommunication

DNV-OS-A101Ch.2 Sec.5

— Confirmed two escape from modules and rooms in the topside areas is in accordance with approved designs.— Surface coatings and marking to be confirmed adequate.— PA/GA tests to be conducted on both ‘A’ and ‘B’ to confirm alarms are audible in process areas. Flashing beacons

to be confirmed in high noise areas.— Confirm signage— Confirm adequate lighting on escape routes on normal and emergency battery backup.

Appendix G

CHANGES – HISTORIC

July 2015 editionThis document supersedes DNV-RP-A205, October 2013.On 12 September 2013, DNV and GL merged to form DNV GL Group. On 25 November 2013 Det NorskeVeritas AS became the 100% shareholder of Germanischer Lloyd SE, the parent company of the GL Group,and on 27 November 2013 Det Norske Veritas AS, company registration number 945 748 931, changed itsname to DNV GL AS. For further information, see www.dnvgl.com. Any reference in this document to "DetNorske Veritas AS", "Det Norske Veritas", "DNV", "GL", "Germanischer Lloyd SE", "GL Group" or any otherlegal entity name or trading name presently owned by the DNV GL Group shall therefore also be considered areference to "DNV GL AS".

Main changes July 2015

• GeneralThe revision of this document is part of the DNV GL merger, updating the previous DNV recommendedpractice into a DNV GL format including updated nomenclature and document reference numbering, e.g.:

— DNV replaced by DNV GL.— DNV-RP-A205 to DNVGL-CG-0170 etc.

A complete listing with updated reference numbers can be found on DNV GL's homepage on internet.To complete your understanding, observe that the entire DNV GL update process will be implementedsequentially. Hence, for some of the references, still the legacy DNV documents apply and are explicitlyindicated as such, e.g.: Rules for Ships has become DNV Rules for Ships.

Changes – historic


DNV AS

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