RepoR ofthe Committee on General Storage William P ... - NFPA

RepoR ofthe Committee on

General Storage

William P. Thomas, Chair Kemper Nat'l Insurance Cos., IL

Christopher T. Lummus, Secretary Fire Prevention and Engr Bureau ofTX, TX

Hamid IL Bahadori, City of Orlando Fire Dept., FL J. s. Barriu, Eastham, MA

Rep. Industrial Risk Insurers ThomasJ. Brown, Factory Mutual Research Corp., MA Robert B. Combs, Johnson & Hig.gins of WA Inc., WA Thomas P. Conlon, M&M Protecuon Consultants, NJ Robert C. Everson, Calabash, NC 28459 James Golinveaux, Central Sprinkler Corp., PA

Rep. Nat'l Fire Sprinkler Assn. Thomas Goonan, Tom Goonan Assoc., VA Raymond A. Grill, RolfJensen & Assoc. Inc., CA Richard E. Hughey, ISO Commerdal Risk Services, NJ Richard S. Johnson, Hilton Head, SC

Rep. Owens-Illinois John F. Murphy, Dow Chemical U~SA., TX

Rep. Chemical Mfrs. Assn. Jennifer L. Nelson, AT&T Co., NJ Gerald W. O'Rourke, O Rourke & Co., CA Albert W. Reed, Schirmer Engr Corp., TX Philip E. Sanl;ilippo, Hdq, Military Trafifc Mgmt Command, Eastern

AREA, NJ ~ er Co T ~'T PeterA. Smith, Int'l t'ap ., l~ Joseph P. Spollen, Bayside, NY JackThacker, Allan Automatic Sprinkler Corp. of S. CA, CA

Rep. Nat'l Fire Sprinkler Assn. Pter Thomas, The Viking Corp., MI

Rep. American Fire Sprinkler Assn., Inc. Terry L. Victor, Automatic Sprinkler Corp. of America, MD Charles Walker, IRM Insurance, NC

Alternates

Saivatore Gitto, M&M Protection Consultants, NY (Air. to T. P. Conlon)

Stephen IL Hoover, Kemper Nat'l Insurance Cos., IL (Ah. to W. P. Thomas)

James M. lagalls, Industrial Risk Insurers, CT (Alt. toJ. s. Barritt)

Kenneth E. Isman, Nat'l Fire Sprinkler Assn., NY (Alt. toJ. Thacker)

Wilfiam A. Webb, RolfJensen & Assoc. Inc., IL (AlL to R. A. Grill)

W'dliam g. Wilcox, Factory Mutual Research Corp., MA (Alt. to T.J. Brown)

Nonvot~g

Martin M. Brown, Laguna Hills, CA (Member Emeritus) Sultan M. Javeri, AXA- UniEurope, Paris, France

Staff Liaison: Milosh T. Puchovsky

This llst ropresents the membership at the time the Committee was balloted on the text of this edition. Since that time, changes in the membership may have occurre~

Committee Scope: This committee shall have primary responsibility for documents on safeguarding general warehousing and commodities stored indoors again" st fire. It shall not deal with storage specifically covered by other NFPA standards.

The Report of the Committee on Genera/Storage is presented for adoption.

This Report was prepared by the Technical Committee on General Storage and proposes for adoption a partial revision to NFPA 231- 1990, Standard for General Storage. NFPA 231-1990 is published in Volume 5 of the 1993 National Fire Codes and in separate pamphlet form.

This Report has been submitted to letter ballot of the Technical Committee on General Storage which consists of 24 voting members. The results of balloting will be found in the Report.

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N F P A 2 3 1 - - F 9 4 T C R

(Log #CP4) 231- 1 - (1-1.1, 1-1.1.1, 1-1.1.2, 1-1.1.3): Accept SUBMITrER: Teclmical Committee on General Storage, RECOMMENDATION: 1. Revise current Section 1-1.1 so dlat it reads as follows and delete existing Sections 1-1.1.1, 1-1.1.2, 1-1.1.3, l-I. ! .4 and 1-1.2 without substitution and renumber existing Section 1-1. 1.5 as I-I .2 respectfully.

1-1.1 This standard applies to the storage of materials representing die broad range of combustibles, including plastics, s tored palletized, solid-piled, in bin boxes or on shelves.

2. Renumber existing section 1-2 as 1-3. 3. Adda new section 1-2 to read as follows: "Retroactivity Clause. The provisions of this document are

considered necessary to provide a reasonable level of protection from loss of life and property from fire. They reflect situations and the state of the art at the time the standard was issued.

Unless otherwise noted, it is not intended that the provisions of this document be applied to facilities, equipment, structures, or installations that were existing or approved for construction or installation prior to die effective date of this document.

Exception: In those cases where it is determined by the authority having jurisdiction that the existing situation involves a distinct hazard to life or property, this standard shall apply." SUBSTANTIATION: The new section l-l. 1 was revised for editorial clarification, and adequately addresses the existing provisions of Sections l-l. I. l, l-l.l.2, l-l.l.3, .and l-l.l.4. The retroactivity clause was added to incorporate action by the Standards Council on die application of this standard to existing facilities. COMMITrEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:

AFFIRMATIVE: 21 NOT RETURNED: Goonan, Spollen, Thacker

(Log #1) 231- 2- (1-1.1.1, 1-1.1.2, 1-1.1.3 and 1-1.1.4 Exception and 1-4.2 ): Accept in Principle SUBMITTER: W.P. Thomas, Teclmical Committee on General Storage RECOMMENDATION: 1. Add the following Exception to 1-1.1.1, 1-1.1.2, 1-1.1.3, and 1-1.1.4: Exception: Miscellaneous storage sltall be permitted to be

protected in accordance with NFPA 13, Standard for the Installation of Sprinkler Systems.

2. Add the following definition to 1-4.2: MisceUaneous Storage. Storage that does not exceed 12 ft (3.7 m)

in height and is incidental to another occupancy use group as defined in NFPA 13. Protection criteria for miscellaneous storage are outside the scope of this standard. SUBSTANTIATION: Pursuant to Section 15 of the NFPA Regula- tions Governing Committee Projects, die National Fire Protection Association has issued the following Tentative Interim Amendment to NFPA 231, Standard for General Storage, 1990 edition. The TIA was processed by the General Storage Committee and was issued by the Standards Council on July 19, 1991. A Tentative Interim Amendment is tentative because it has not

• been. processed through die entire standards-making procedures, it ts interim because ttts effecUve only between ediuons of the standard. A TIA automatically becomes a Proposal of the proponent for file next edition of the standard; as such, it then is subject to all of the procedures of die standards making process. COMMITTEE ACTION: Accept in Principle.

Modify die submitters proposal as follows: 1. Add the following exception to newsection 1-1.1: Exception : Miscellaneous storage shall be permitted to be

protected in accordance with NFPA 13, Standard for the Installation of Sprinkler Systems.

2. Add the following definition to current section 1-2: Miscellaneous Storage. Storage that does not exceed 12 ft (3.7 m)

in height and is incidental to another occupancy use group as define-d in NFPA 13. Such storage shall not constitute more than 10 Pwlercent of the building area or 4,000 sq ft of the sprinklered area,

fichever is greater. Such storage shall not exceed 1000 sq ft in one pile or area, and each such pile or area shall be separated from other storage areas by at least 25 ft. COMMITrEE STATEMENT: Renumbering changes are editorial due to die proposed change in Proposal 231-1 (Log #CP4).

The definition of Miscellaneous Storage was revised to coordinate with die recent modifications to NFPA 13. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24

VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 20 NEGATIVE: Nelson NOT RETURNED: Goonan, Spollen, Thacker

EXPLANATION OF NEGATIVE: NELSON: Didn't like this when proposed for TIA. Don't feel this

is appropriate since it seems that 13 is occupancy standard with this.

(Log #GP7) 231- 3 - (1-2 CeilingHeight (New) and Rooft Height (New)): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: Add new definitions for roof height and ceiling height so that they read as follows:

Ceiling Height. The distance between the floor and the underside of the ceiling above (or roof deck) within the storage area. Roof Height. The distance between the floor anti the underside of

the roof deck within the storage area. SUBSTANTIATION: To provide greater clarification for these terms as they are used within this document. COMMITrEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMrlWF_,E ACTION:


(Log #CP2) 231- 4- (1-2 Spray Sprinkler): Accept SUBMYrTER: Technical Committee on General Storage, RECOMMENDATION: Add a new definition for "Spray Sprinkler" to read as follows: Spray. .S, pfrinkler. A type of sprinkler, listed for its ca. pability to

prowde tire control for a wide range of fire hazards. SUBSTANTIATION: To provide a definition for a "spray sprinkler" and coordinate the definition with NFPA 13. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


( Log #CP 10) 231- 5 - (1-2 Sprinklers Temperature Rating): Accept SLrBMITTER: Technical Committee on General Storage, RECOMMENDATION: Revise definition of "SprirLklers Tempera- ture Rating" so that it reads as follows: Sprinklers Temperature Rating. (a) Ordinary temperature rated sprinklers includes those between

135°F (57°C) and 17O°F (77°C). (b) High temperature rated sprinklers includes temperature

ratings between 250°F (121°C) and 300°F (149°C). SUBSTANTIATION: To reflect the current definitions that are being used to define these sprinklers and provide conformity with NFPA 13, Standard for die Installation of Sprinkler Systems. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #2) 231- 6 - (2-1.1): Reject SUBMITTER: Basil F. Holcomb, Lafayette, CA RECOMMENDATION: Revise file second paragraph of Section 2-1.1 to read:

"Examples of noncombustible products are:" Revise the "Foods" example paragraph to read, "Noncombustible

foodstuffs and beverages; frozen foods; meats; fresh fruits and vegetables; liquid dairy products; beer and wine, up to 20 percent alcohol." SUBSTANTIATION: The definition of section (1-2) of the standard contains a definition of Commodity as "Combinations of products, packing material and container. ~

65

N F P A 231 - - F94 T C R

There is no definition of "product cl~s ~ in the standard, yet several references to product classes in each of the four "commodity" classes are given. The interchanging usage of commodity and product is very confusing. All of the proposed changes will clarify tile intent of establishing commodity classes and not product classes.

The various food items indicated as examples of"noncombustible products" have references to containers. However, by definition the container is only one of the three elements making up a commodity. If the container changes the nature of the product, then the reference to containers as a function of determining commodity should be removed from the definition. I believe tile intent of the standard is to place a product in the al~propriate commodity class as the container changes and /o r the packing material changes. The current definition of a Class II commodity clearly states dais position. COMMIT1"EE ACTION: Reject. COMMITI'EE STATEMENT: Current definition is adequate for noncombustible. These definitions have been coordinated between the different storage documents for consistency. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #3) 231- 7- (2-1.2): Reject SUBMITTER: Basil F. Holcomb, Lafayette, CA RECOMMENDATION: Revise the wording of Section 2-1.2 to read: "Class II commodity is defined as noncombustible products in ... " ,and the balance to read as present.

Revise the first sentence of the secondparagraph to read: "Examples of Class Ilcommodities a r e : - Replace the word "Class 1" in the third paragraph with file word

"noncombustible." SUBSTANTIATION: There is no definition of"products" in file standard, yet several references to product classes in each of the four "commodity" classes are given. The interchanging usage of commoldity and product is very confusing. AlIof the proposed changes will clarify the intent of establishing commodity classes and not product classes. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: See Committee Action and Statement on Proposal 231-6 (Log #2). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMrI'I'EE ACTION:


(Log #5) 231- 8 - (2-1.3): Reject SUBMITTER: Basil F. Holcomb, Lafayette, CA RECOMMENDATION: Relocate tile last sentence of tile first paragraph of Section 2-1.3 to a new Example paragraph. Also change the second paragraph to read:

"Examples of Class III commodities are:" Add a new paragraph under Examples as follows: Limited Plastic Products. Metal bicycles with plastic handles,

g edals, seats, and tires. UBSTANTIATION: There is no definition of "products" in file

standard, yet several references to product classes in each of the four "commodity" classes are I~iven. The interchanging useage of commodity and product is very confusing. All of theproposed changes will clarify the intent of establishing commodity classes and not product classes. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: See Committee Action and Statement on Proposal 231-6 (Log #2). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


231- 9 - (2-1.4): Reject (Log #4) SLIBMITTER: Basil F. Holcomb, Lafayette, CA RECOMMENDATION: Reword the first paragraph of Section 2-1.4 as follows:

"Class IV commodity is defined as products otherwise classified as Class I, 11 or III which contain an appreciable amount of Group A plastics in ordinary corrugated cartons or in corrugated cartons with Group Aplastic packing, with or without pallets. Group B plastics and free-flowing Group A plastics are also included in this class.

Relocate the last sentence of the existing first paragrapll of tile section to file end of the examples paragraph and reword it as follows:

"An example of plastic packing material is a metal typewriter in a foamed' plastic cocoon in an ordinary corrugated carton. (Figure 7- 1.1, Note 3.)'. Revise the second paragraph of the section to read, "Examples of

Class IV commodities are:" SUBSTANTIATION: There is no definition of "products" in the standard, yet several references to product classes in each of the four "commodity" classes are given. The interchanging usage of commodity a n d . ~.roduct is . . . . very confusing. All of the p r o posed changes ~mll clarify tile intent of estabhshmg commodity classes and not product dasses. COMMITTEE ACTION: Reject. COMMI'ITEE STATEMENT: See Committee Action and Statement on Proposal 251-6 (Log #'2). NUMBER OF COMMI'Iq~E MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITFEE ACTION:


(Log #2S) 231- 10- (4-4.1.1 and A-4-4): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 4-4.1.1 as follows:

"Plastic pallets shall be stored outside or in a detached slructure. Exception: Indoor plas~c pallet storage shall be permitted in

accordance wtih 4-4.1.2. Also add to A-4-4, "Therefore, it is preferable to store pallets

outdoors where possible. SUBSTANTIATION: Correct format which removes permissive language from the standard and places reasons in the appendix. COMMITTEE ACTION: Accept m Principle.

Revise 4-4.1.1 to read as follows: Pallets shall be stored outside or in a detached su'ucture. Exception: Indoor pallet storage shall be permitted in accordance

with 4-4.1.2. Retain theproposal on A-4-4 as is.

COMMITrEE STATEMENT: To provide clarification of the submitter's intent by removing the term "plastic." NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:

AFFIRMATIVE: 21 NOT RETURNED: Goonan, Spo[len, Thacker

(Log #'22) 231- 11 - (4-4.2.1): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 4-4.2.1 as follows:

"Plastic pallets shall be stored outside or in a detached s~ucture. Exception: Indoor plastic pallet storage shall be permitted in

accordance wtih 4-4.2.2." SUBSTANTIATION: Correct format which removes permissive language. COMMITI'EE ACTION: Accept in Principle.

Revise file heading of Section 4-4.1 and 4-4.2 to read as follows: 4-4.1 Wood Pallets 4-4.2 Plastic Pallets Revise 4-4.2.1 to read as follows: 4-4.2.1 Plastic pallets shall be stored outside or in a detached

s t l~ lc tu r e . Exception No. 1: Indoor plastic pallet storage shall be permitted in

accordance with 4-4.2.2. Exception No. 2: Indoor nonexpanded polyethylene solid deck

pallets shall be permitted to be protected in accordance with 4-4.1.2.

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N F P A 2 3 1 - - F 9 4 T C R

COMMITrEE STATEMENT: To provide greater clarification of the submitter's intenL NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #CP5) 231- 12 - (5-1.2.1, 5-1.2.2): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: Combine Section 5-1.2.1 and Section 5-1.2.2 into a new Section 5-1.2.1 so that it reads as follows:

5-I .2.1 The sprinkler design density for any given area of operation for a Class III or Class IV commodity, calculated in accordance with Chapter 6, shall not be less than the deusity for the corresponding area of operation for Ordinary Hazard Group 2 in NFPA 13, Standard for the Installation of Sprinkler Systems.

Renumber existing5-1.2.3 as 5-1.2.2. SUBSTANTIATION: To coordinate the provisions of dais document with the recent modifications of NFPA 13, Standard for the Installation of Sprinkler Systems in regards to the design densities provided for ordinary hazards. The design density chart was modified from 3 classificatious of ordinary hazards to 2 classifica- tions. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #21) 231- 13 - (5-1.2.3): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 5.1.2.3 to read:

5-1.2.3 The water supply requirements for sprinklers only shall be based on the actual calculated demand for the hazard using Chapter 6, Chapter 7, Chapter 8, Chapter 9, or Chapter 10 depending on the type of sprinkler selected a n d t h e commodity being protected. SUBSTANTIATION: Current section does not recognize alterna- fives allowed by Chapters 7-10. COMMITTEE ACTION: Accept in Principle.

Delete "or Cha~ter 10" from the submitters proposal and add the word "or" after Chapter 8." COMMITTEE STATEMENT: Editorial as a new Chapter 10 will not be added. See Committee Action on Proposal 231-32 (Log #8).

• NUMBER OF COMMITTEE MEMBERSELIGIBLE TO VOTE: 24 VOTE ON CoMMrlTEE ACTION:


commodity loss than standard 1/2 in. and 17/32 in. sprinklers. For additional information concerning Factory Mum~d Research Corporation's findings on the ELO technology, please reference Factory Mutual Research Report FMRCJ.I. 0WOR4.RR.

The Central Model D.64 (ELO-231), with a K-factor of 11.4, has the ability to provide higher required densities at lower end head start pressures. An example of a 0.60 density over 100 sq ft would require a 54.2 psi end head start pressure from a 17/32 in. K-factor of 8.1 large orifice sprinkler, while the D.64 (ELO-231) K-factor of 11.4 requires only 27psi end head start pressure. This represents a net sawngs of over 25psi, which results in am ore economical installation cost by negating the need for booster pumps in some cases. It also can allow for the reductions in pipe size for branch lines, main sizes, or underground service connections.

Density upgrade from existing 17/32 in. orifice systems would be possible by simply changin~ sprinklers to ELO as 11/2 x 17/32 in. sprinklers upgraded densiues in existing 1/2 in. systems.

Additionally, the use of extra-large orifice sprinklers with the elimination of booster pump adds to the reliabilitf of the sprinkler system as recognized in the engineering and underwriting guidelines of the H.P.R. insurance companies. Complexity and maintenance of on-site booster pumps are subject to greater failure rates than the typical municipal water supply.

Factory Mutual Report's conclusion statement is as follows: "Central Model D.64 Extra Large Orifice (ELO) sprinklers installed in lieu of standard sprinklers (1/2 in. and 17/$2 in. orifice ~pray sprinklers), in accord with the density/area method ofdesigu, may be expected to perform at least as well as standard sprinklers; provided that the minimum discharge pressure is not less than 10 psi. COMMITTEE ACTION: Accept in Principle.

1. Revise current 5-1.5 to read as follows: Standard response 1/2-in. (12.7-ram) or large orifice 17/32-in. (l$.5.mm) sprinklers shall be used in applying the curves and tables in Chapters 6 and 7.

2. Revise the submitters exception to 5-1.5 to read as follows: Exception No. 2: The use of Extra-Large Orifice sprinklers (5/8)

slaM! be permitted when listed for such use, and when installed at a minimum design pressure of 10 psi.

3. Revise the current exception to read as follow:;: Exception No. 1: Use of these curves and tables with quick

response sprinklers shall be permitted at the discretion of the authority having jurisdiction. COMMITTEE STATEMFJffF: Editorial changes tc, provide greater darification and identification. NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


COMMENT ON AFFIRMATIVE:

t~OHNSON: For clarification, the new Excel~tion No. 2 should have e following added after "pressure of 10 psi,

using the curves and tables in Chanters 6 and 7.

(Log #25) 231- 14- (5-1.5 Exception (New)): Accept in Principle SUBMITI~R: James Golinveaux, Central Sprinkler Co. RECOMMENDATION: Add a new Exception to 5-1.5 as follows:

Exception: The use of extra-large orifice sprinklers shall be acceptable when listed for such use, and when installed at a minimum operating pressure of 10 ~si. SUBSTANTIATION: Extra-large orifice (ELO) sprinklers are not referenced for the area/density curves of storage facility standards, since the ELO technology did not exist when the area/density curves were developed.

The use of extra-large orifice sprinklers allows flexibility of water supply selection. Weak water supplies that require booster pumps deter facility owners from installing nonrequired systems. More potential building sites exist by the more flexible water supply requirements.

Central Sprinkler Company established a research project with Factory Mutual to provide full-scale fire testing to demonstrate performance of the Model D.64 (ELO-231), with the area/density curves in the storage facility standards. The full-scale fire tests on the Model D.fi4 (ELO-231) for the area/density curves of storage standards have demoustratedprotection performance at least as equivalent to 1/2 in. and 17/32 in. spray sprinklers. At start pressures of 10 psi or higher, the D.64 (ELO-231) opened fewer sprinklers, reduced overall temperatures, and provided less

(Log #20) 231- 15 - (5-4): Reject SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Write hydrant spacing and installation requirements into Section 5-4. SUBSTANTIATION: NFPA 24 no longer contains this information. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: No supportive language provided. NUMBER OF COMMITrEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:

AFFIRMATIVE: 21 NOT RETURNED: Goonan, Spoilen, Thacker

(Log #CP14) 231- 16 - (5-5.2 Note, A-5-5, and Appendix D): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: 1. Delete file current note in Section 5-5.2.

2. Add the following to Section A-5-5: "Information on emergency organization and preqnddent

planning is given in the following publications: NFPA Industrial Fire Brigades Training Manual. NFPA 600, Recommendations for Organization, Training, and

equipment of Private Fire Brigade. NFPA 1420, Recommended Practice for Pre-lncident Planning for

Warehouse Occupancies."

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3. Add the following new document to Appendix D: "NFPA 1420, Recommended Practice for Pre-lncident Planning for

Warehouse Occupancies, 1993 edition." SUBSTANTIATION: This is more appropriately located in the appendix as it is for informational purposes only and is not considered as part of file requirements. The new NFPA document is also acknowledged. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMrrTEE ACTION:

AFFIRMATIVE: 20 ABSTENTION: Thomas NOT RETURNED: Goonan, Spollen, Thacker

EXPLANATION OF ABSTENTION: THOMAS: This should read AIP and create a new Appendix no.

A-5-5.2.

(Log #19) 231- 17 - (Chapter 6): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc~ RECOMMENDATION: Revise Chapter 6 as follows:

6-1 General. 6-1.1 Class I - IV commodities of the following configurations shall

be protected in accordance with this chapter. (a) Nonencapsulated commodities which are solid pile, palletized

or bin box storage up to 30 ft in height. (b) Nonencapsulated commodities on shelf storage up to 15 ft in

height. (c) Encapsulated commodities which are solid pile, palletized, bin

box or shelf storage up to 15 ft in height. Exception: Protection as required completely by Chapter 8,

Chapter 9 , or Chapter 10. 6-1.2 Bin box andshel f storage over 12 ft and provided with

walkways at not over 12 ft vertical intervals shall be provided with automatic sprinklers under the walkways as well as at die ceiling. The design density for ceiling and walkway sprinklers shall be permitted to be in accordance wifll the height adjustment of Figure 6-2.2.

6-2 Water Supplies. 6-2.1 The fol|owing procedure shall be used to determine tile area

and density for th hydraulically remote area. 6-2.1.1 Storage 12 ft or less in height of Class II1 and Class IV

commodities shall be in accordance wid~ NFPA 13 for Ordinary Hazard Group 2. 6-2.1.2 When using ordinary temperature sprinklers, select any

single point from the appropriate commodity curve on Figure 6- 2.1.2.

<

<

L9 Z

<

O er uJ .J

Z r r

m: ft 2

550 6000~ i

500 ! 450 5000 i

400 4000 -

350

300 3000"

250

200 2000-

gpm/ft 2 0.1 0.15

L/s/rn 2 0.075 0.1

0.2 0.25 0.3 0.35 0.4

0.125 0.15 0.175 0.2 0.225 0.25

S P R I N K L E R D E N S I T Y

6-2.1.3 When using high temperature sprinklers, select any single point from the appropriate commodity curve on Figure 6-2.1.3.

m2 ft 2

375 " ~

280

190 ~omlf t 2 0.1 0.15 0.2 0.25

L/tsm 2 .075 .102 136 170

SPRINKLER O E N S I T Y

0.30

197

NOTE: Sprinkler demand for 20 ft (6 m) high storage may be selected from ,any point on the appropriate class curve in Figure 6-2.2.3. Figure 6-2.2.3 provides protection curves for sprinkler systems using only 286°F (141°C) rated sprinklers.

6-2.14 Tile densities selected in 6-2.1.2 or 6-2.1.3 shall be modified in accordance widl Figure 6-2.1.4 widlout revising the design area.

250

>- 200 F-

z uJ £3 LIJ > rr 150'

£3

Z (.9

LU o 100 u_

O

z LIJ £3 a: 5 0 UJ

f t 10 15 20 25 30

m 3.0 4.5 6.0 7.5 9.0

S T O R A G E H E I G H T

6-2.1.5 Where dry-pipe systems are used, file areas of operation indicated in the design curves shall be increased by 30 percent. Densities shall be selected so that area of operation after the 30 percent increase, do not exceed file following:

(a) 3400 sq ft for Class I Commodities (b) 4000 sq ft foi" Class II Commodities (c) 5000 sq ft for Class llI Commodities (d) 6000 sq ft for Class IV Commodities

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N F P A 231 - - F94 T C R

6-2.1.6 For bin boxes and dosed shelves constructed of metal with a face area not exceeding 16 sq ft, the area of application shall be permitted to be reduced by 50 percent, ,as long as the minimum requirements of Chapter 5 are met.

6-2.1.7 The final area and density shall not be less than the minimum specified in Chapter 5.

6-2.2 Given the area and density obtained in 6-2.1, the fire sprinkler system shall be hydraulically ealculated in accordance with NFPA 13.

6-2.3 A minimum of 500 gpm shall be ,-~l.ded to the sprinkler demand for combined large and small hose stream de/hand.

6-2.4 Water supply duration shall be in accordance with Table 6-2.4.

Duration (hours)

Storage Height ft (m)

Commodi ty Class

Classes I, II, & III Class IV over 12 (3.7) up to 20 (6.1) over 20 (6.1) up to 30 (9.1)

1 I/~ 2 2 21/2

6-3 High Expansion Foam (see Section 5-2.)

NOTE: Current A-6 will remain A-6. Current A-6-1.2 will be renumbered A-6-1.1 (c) Current A-6-2 will be renumbered A-6-2.3.

SUBSTANTIATION: This cleans up a multitude of problems including redundant sections and 6.2.4 which is currently impossible to comply with. COMMITrEE ACTION: Accept in Principle.

Revise Chapter 6 as follows: Chapter 6 Fire Protection of Commodity Classes I through IV -

Spray Sprinklers 6-1 General. 6-1.1 Class ! - IV commodities of the following configurations

protected by spray sprinklers shall be in accordance with this chapter.

(a) Nonencapsulated commodities which are solid pile, palletized or bin box storage up to 30 ft in height.

(b) Nonencapsulated commodities on shelf storage up to 15 ft in height.

(c) Encapsulated commodities which are solid pile, palletized, bin box or shelf storage up to 15 ft in heighc

6-1.2 Bin box and shelf storage over 12 ft and provided with walkways at not over 12 ft vertical intervals shall be provided with automatic sprinklers under the walkways as well as at the ceiling. The design density for ceiling and walkway sprinklers shall be permitted to be in accordance with the height adjustment of Figure 6-2.1.5.

6-2 Water Supplies. 6-2 .1 The water supply shall be capable of providing the sprinkler

system demand obtained in 6-2.3 including the hose stream demand of 6-2.4 for the duradon requirements of 6-2.5.

6-2.2 The area and density for the hydraulically remote area shall be determined as follows:

6-2.2.1 Storage 12 ft or less in height of Class 11I and Class IV commodities shall be in accordance with NFPA 13 for Ordinary Hazard Group 2.

6-2.2.2 When using ordinary temperature rated sprinklers, a single point shall be selected from the appropriate commodity curve on Figure 6-2.2.2.

6-2.2.3 When using high temperature rated sprinklers, a single point shall be selected from the appropriate commodity curve on Figure 6-2.2.3.

r n 2

< 550

< 5OO ( .3 z 4 5 0 t -

=~ 40o == 0 350 n,- L~

3oo Z

~- 2 5 0

f t 2

6 0 0 0 ~ I t I 11 I i I I ~ l i i i I ] [ I I I t I I I I k l I I I

I I I I I I I I I [~1 ! I I I J I I I J II I~,I i I

I I I I I I I I I I I I\I ! I 5000 I I I J I I~! I I I Ill, I I

i ] I I I I kl I I I I IXlZ I I I I I I IXl I I I I I ~ IIIII IIkl I I I l%t'

4 0 0 0 I I ] i i i ] i ~ l I I I I l\I I I I~.I~i I i I I fill I'i] I I't~d~ I I I I ( I\I I I ~,'Yt~ I I I I I i I l ~ . i 1 ~ . . , I i K".P' I I I I I I I~/r~X~.( 1 [ 'k~l I

3000 l lli ~?_x~'X~.-r-rx = J I If I I h,~Lo~>.I I~I I I i i I I !X_%.N:I I I'l ] I I I I I I [~KI N El I

I g p m / f t ~ 0.1 0 .15

L / s / m : 0 .075 0.1

2 ~ 2OO0

Ii l I I I t I I I I I I I • ! ! ! . l l l l l l

= ii i i i i i i

! i " I I

' , l i i l • I I ' ,J I

i : ,I ~L . ! l i t ,

0.2 0 .25 0.3 0 .35 0 .4

0 . 1 2 5 0 .15 0 .175 0 .2 0 . 2 2 5 0 .25

S P R I N K L E R D E N S I T Y

Figure 6.2.2.2 Sprinkler System Design Curves 2gf t High Storage - - Ordinary TemperatureRated Sprinklers.

m 2 f t 3

I

2S0 300(!

---- i - i

,go ~ - L gL~m#t~ 2 0.1 0 . I S 0.2

t . , / l ~ r2 .0?S . 102 ,136

SPRINKLER DENSITY

I I

r b

0 .3S

. 170

I I 1 I I I I I I ] I I i I I I

I I ! I i [ i i

I 1 I I

I i I 1

. I I T I

0,30

197

F'~qn-e 6-2.2.3 Sprinkler system Design, Curves, 20-ft High Storage - - H i g h Temperature Rated Sprinklers.

NOTE: Sprinkler demand for 20 ft (6 m) high stoJ~age may be selected from any point on the appropriate class curve in Figure 6-2.2.3. Figure 6-2.2.3 provides protection curves for sprinkler systems using only 286°F (141°C) rated sprinklers.

69

N F P A 231 m F 9 4 T C R

6-2.2.4 The densities selected in 6-2.2.2 or 6.2.2.3 shall be modified in accordance with Figure 6.2.2.4 without revising the design area.

250

200

Z UJ im UJ

~> 15O

:7

,~ 100

o

W

W

0

ft 10 15 20 25 30

m 3.0 4.5 6.0 7.5 9.0

STORAGE HEIGHT

lrtgure 6-2.2.4 Ceiling Sprinkler Density Versus Storage Height.

6.2.2.5 Where dry-pipe systems are used, the areas of operation indicated in the design curves shall be increased by 30 percent.

6-2.2.6 For bin boxes and closed shelves constructed of metal with a face area not exceeding 16 sq ft, the area of application shall be permitted to be reduced by 50 percent, as long as tile minimum requirements of Chapter 5 are met.

6-2.2.7 Tile final area and density shall not be less than the minimum specified in Chapter 5.

6-2.3 Given the area and density obtained in 6-2.2, the fire sprinkler system shall be hydraulically calculated in accordance with NFPA 13.

6-2.4 A minimum of 500 gpm shall be added to the sprinkler demand for combined large and small hose stream demand.

6-2.5 Water supply duration shall be in accordance with Table 6-2.5.

Duration (hours)

Storage Height fit (m)

Commodity Class

Classes I, II, & III Class IV over 12 (3.7) up to 20 (6.1) over 20 (6.1) up to 30 (9.1)

1 I/2 2 2 2 i/2 /

6-3 High Expansion Foam (see Section 5-2)

Current A-6-1.2 will be renumbered A-6-1.1 (c) and A-6.2 will be renumbered A-6-2.4. COMMITrEE STATEMENT: The revision clarifies the submitter's intentions. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMrrTEE ACTION:


(Log #CP3) 231-18 - (Chapter 6): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: Revise the tide of Chapter 6 to read as follows:

Chapter 6 Fire Protection of Commodity Classes I thru W-Spray Sprinklers SUBSTANTIATION: To provide conformity with the actions taken on Proposal 231-17 (Log #19). COMMITrEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #18) 231- 19 - (Chapter 7): Accept in Principle SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise the tide to:

"Fire Protection of Plastic and Rubber Commodities with Spray Sprinklers." SUBSTANTIATION: This is the correct function of the chapter. COMMITTEE ACTION: Accept in Principle.

Revise the title to Chapter 7 to read as follows: Fire Protection of Plastic & Rubber Commodities - Spray Sprinklers

COMMITIT.E STATEMENT: Revisions for consistency within the document on the titles used to identify the chapters. NUMBER OF COMMITIT.E MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITIT.E ACTION:


(Log #CP8) 231- 20 - (Chapter 7): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: Revise Chapter 7 as follows:

7-2 Water Supplies. 7-2.1" The desi~., of the sprinkler system shall be based on the

conditions that roll routinely or periodically exist in a building creatin~ tile greatest water demand. These conditions include: (a) pile height, (b) clearance, (c) pile stability, and (d) array.

7-2.2 Design areas and densities shall be selected for the appropriate storage configuration from Table %2.2.

%2.3 Where sprinkler protection has been designed for Group A plastics, at least 500 gpm (32 L/s) shall be added to the density/area demand for hose streams.

7-2.4 Water supply duration (sprinkler demand plus hose streams) shall be 2-hr duration for 5 ft (1.5 m) to 20 ft (6.1 m) and 2 1/2 hr duration for 20 ft (6.1 m) to 25 ft (7.6 m).

7-2.5 Where dry-pipe systems are used for Group A plastics, file operating area shall be increased by 30 percent without revising the density.

70

N F P A 2 3 1 m F 9 4 T C R

I GROUP A (See Note)

PLASTICS

GROUP B GROUP C Class IV Class III I

I EXPANDED

I t I I

CARTONED EXPOSED UNSTABLE Table 7-2.2 Column A

I I I UNSTABLE S T A B L E UNSTABLE Table 7-2.2 Table 7-2.2 Table 7-2.2 Column D Column B Column C

I I NONEXPANDED FREE-FLOWING

I Class IV

I STABLE

I I I STABLE SOLID UNIT L O A D CARTONED EXPOSED

Table 7-2.2 Table 7-2.2 Table 7-2.2 Table 7-2.2 Column E Column A Column C Column E

letgure 7-1.1 Decision Tree

NOTE: Cartons tha t contain Group A plastic material may be treated as Class IV commodi t ies u n d e r the following condi t iom: (a) The re are mult iple layers of corrugat ion or equivalent outer material that would signifi candy delay fire involvement of the Group A plastic,

and (b) The a m o u n t and a r r a n g e m e n t of Group A plastic material within an ordinary carton would no t be expected to significantly increase the

fire hazard.

Table 7-2.2

Stg Ht.

12

15

2O

25

Roof/Ceiling Height

15 2O 25

15 20 25

20 25 30

25 30 35

30 35 40

OH-2 OH-2 OH-2

.2

.3

.4

.25 .4

.45

.3 .45 .6

.4

.6 N/A

OH-2 OH-2 OH-2

EH-2 .6 .8

.5

.8

.9

.6

.9 1.2

.75 1.2

N/A

Density 0n~mlso ft)

C

OH-2 OH-2 OH-2

.3

.5

.6

.4. .6 .7

.45 .7

.85

.55

.85 N/A

D

OH-2 OH-2 OH-2

EH-1 EH-2

.45

.3 .45 .55

35 .55 .7

.45 .7

N/A

OH-2 OH-2 OH-2

EH-2 EH-2

.7

.45 .7

.85

.55

.85 I.I

.7 1.1

N/A

NOTE 1: For Table 7-2.2 the design areas are a minimum of 2500 sq ft (Exception: OH-2). NOTE 2: For closed array, reduce areas from 25 st] ft to 2000 sqft . Do not change areas in the table that are less than 2000 sq ft. NOTE 3: Interpolation of densities/areas between storage heights shall be permitted. Interpolation ofceif ing/roof heights shall not be

~ eormiued. TE 4: For storage heights above 12 ft or for density demands of 0.4 gpm/sq ft or greater, large orifice or extra large orifice (ELO) sprinklers

shall be used. NOTE 5: It is recommended that high temperature rated sprinklers be installed, since most tests upon which this standard is based used high temperature rated sprinklers. NOTE 6: The follov~cing notation corresponds to the configuration of plastics storage: A: (1) Nonexpanded, Unstable

(2) Nonexpanded, stable, solid unit load B: Expanded, exposed, stable C: (1) Expanded, exposed, unstable

(2) Nonexpanded, stable, cartoned D: Expanded, carmned, unstable E: (1) Expanded, cartoned, stable

(2) Nonexpanded, stable, exposed NOTE 7 :OH-2 corresponds to the density required for Ordinary Hazard Group 2 occupancies, EH-1 corresponds to the density requia-ed for Extra Hazard Group 1 occupancies, and EH-2 corresponds to the density required for Extra Hazard Group 2 occupancies as found in NFPA 13.

71

N F P A 231 - - F 9 4 T C R

Renumber current A-7-2.6 as A-%2.5. SUBSTANTIATION: Currently, many users of Chapter 7 of NFPA 231 are confizsed by the selection of two different design densities for two different design areas. After extensive review and evaluation of the current Chapter 7 design requirements, the committee feels that the objective of the two point design criteria can be achieved by a single point criteria. COMMITTEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 19 NEGATIVE: Johnson, Nelson NOT RETURNED: Goonan, Spollen, Thacker

EXPLANATION OF NEGATIVE: JOHNSON: The use of single point densities instead of the

original two point density concept makes the standard easier to use, but as presently drafted, it does not satisfy file requirements as originally amended. There is no new data on fire tests presented to justify the proposed changes, these changes being made only to make its use more user friendly. The concept to use ,an initial density was to obtain much higher

initial densities to control fires with fewer operating sprinklers as shown possible when using realistic decreasing densities rather than the often used flat density approach no matter how many heads have operated. The introduction of Note 4 on Table 7-2.2 attempts to provide a "rule book" approach rather than an engineering method. It would satisfy many situations as the use of large orifice heads would provide ,,an initial density in the range, of that required under tbe present standards. An example where it would allow the use of 1/2 in. orifices would be a Group (3 commodity/storage configurations for 12 ft high storage under a 15 ft roof height that would require a 0.50 density over 2500 sq ft where is a little above a secondary density of 0.26 for 2500 sq ft under the present standard. This probably would not satisfy the initial density required of 0.53 over 1150 sq ft to meet the present requirement (17/32 orifices or larger needed).

In addition, no interpolation is allowed for clearance from the top of the pile to the roof (or sprinkler deflector). This results in much variations, from the present requirements. Using. Example 1 in Appendtx B (pg. 23 of current standard), a requtred secondary density of 0.27over 3600 sq ft compares with the proposed density of 0.45 over 2500 sq ft. If dais were adjusted for clearance, it would be 0.33 for 2500 sqft and close to file curve for 0.27 for 3600 st] ft.

No doubt other examples need to be calculated to further evaluate the proposed Table 7-2.2. Therefore, this entire section should go back to committee for fiwther review. An additional item - an editorial correction under Note 2 for Table

7-2.2 should read "from 2500 sq ft to 2000 sq ft." NELSON: The numbers on 7-2.2 do not appear to be substanti-

ated. We need back up for tbe changes, because someone unknow- ing, ly may make it retroactive which could cause some problems, ff we re going to force these changes, we better have ~ reasons for them. COMMENT ON AFFIRMATIVE: LUMMUS: I agree with this proposal and vote AFFIRMATIVE but I wanted to call your attention to a typographi-

cal error in Note 2 - the indicated 25-sq ft should read 2500-sq ft. THOMAS: Note 2 in new Table %2.2 should read 2500 sq ft raffler

than 25.

(Log #17) 231- 21 - (7-1.1): Accept in Principle SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 7-l.l as follows:

"All Group A plastics stored up to 30 ft in height shall be protected in accordance with Chapter 7. The decision tree (Figure 7-1.1) shall be followed to determine tile protection in each specific situation.

Exception: Protection as requlred completely by Chapter 8, Chapter 9, or Chapter 10." SUBSTANTIATION: 1. Fixes to scope issue.

2. Adds reference to new Chapter 10. 3. Eliminate Group A reference to Figure 7-1.1.

COMMITrEE ACTION: Accept in Principle. I Revise Section 7-1.1 to read as follows:

Plastics stored up to 30 ft in beight protected by spray sprinklers shall be in accordance with Chapter 7. The decision tree (Figure 7- 1.1) shall be followed to determine file protection in eacb specific situation. COMMITrEE STATEMENT: Revisions were done for clarification. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24

VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 21 NOT RETURNED: Goonan, Spollen, Thacker

(Log #13) 231- 22- (7-2.2.2): Reject SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 7-2.2.2 to read as follows:

"The design area for the initial and secondary demands shall be multipliedby the factors from Figure 7-2.2.2 without revising tile density." SUBSTANTIATION: Clarifies tile procedure by eliminating an "if' decision. Since file figure shows these clearances to be multiplied by 1.0, file math will work out the same. COMMITrEE ACTION: Reject. COMMITrEE STATEMENT: See Committee Action on Proposal 231-20 (Log #CP8). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #12) 231- 23- (7-2.2.2 Note): Reject SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise tile note as follows:

NOTE: There is insufficient test data available to define protection requirements for clearances in excess of 10 ft with spray sprinklers. See Chapter 8, Chapter 9 and Chapter 10 for protection of these conditions with other types of sprinklers. - SUBSTANTIATION: These chapters provide acceptable protection criteria for large clearance situations. COMMITrEE ACTION: Reject. COMMITTEE STATEMENT: See Committee Action on Proposal 231-20 (Log #CP8). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITrEE ACTION:


(Log #14) 231- 24- (7-2.2.3): Reject SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 7-2.2.3 as follows:

"The design densities shall be adjusted in accordance with Figure 7-2.2.3 without revising file design area." SUBSTANTIATION: Clarifies the procedure by eliminating an "if" decision. Since file figure shows the density multiplied by 100 percent, the math will work out the same. COMMITTEE ACTION: Reject. COMMITTEE STATEMENT: See Committee Action on Proposal 231-20 (Log #CP8). NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION: AFFIRMATIVE: 21 NOT RETURNED: Goonan, Spollen, Thacker

(Log #15) 231- 25 - (Chapter 8): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Change the title to: "Protection of All Commodities with Large Drop Sprinklers."

SUBSTANTIATION: This is the correct purpose of the chapter. COMMrFFEE ACTION: Accept in Principle. Revise the rifle to Chapter 8 so that it reads: Fire Protection - Large Drop Sprinklers

COMMITrEE STATEMENT: Revisions for consistency within the document on tile tides used to identify the chapters. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


72

N F P A 2 3 1 - - F 9 4 T C R

(Log #16) 231- 26- (Table 8-1): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Replace the existing Table 8-1 wltb Table A-5-3.4 from NFPA 13. SUBSTANTIATION: The use of Large Drop Sprinklers has dramatically increased since 1990. COMMITTEE ACTION: Accept in Principle.

Complete the action the submitter has proposed so that it reads as follows:

Table 8-1 Large-Drop Sprinkler Data Pressure and Number of Design Sprinklers Required for Various Hazards for Large Drop Sprinklers

Hazard

Palletized Storage Class I, II, and III commodities up to 25 fi (7.6 m) with maximum 10 ft (3.0 m) clearance to ceiling

Class IV commodities up to 20 ft (6.1 m) with maximum 10ft (.30 m) clearance to ceiling

Unexpanded plastics up to 20 fi (6.1 m) with maximum 10 fi (3.0 m) clearance to ceiling

Expanded plastics commodities up to 18 fl (5.5 m) with maximum 8 fi (2.4 m) clearance to ceiling

Idle wood pallets up to 20 ft (6.1 m) with maximum 10 ft (3.0 m, t cl~.rance to ceiling

Minimum Operating Pressure, 1 psi (bar) Water

Hose Stream Supply sType of Demand Dm'atiou

pt~m 2~ 11.71 50 (S.4) 75 ~S .2 ) G a l / m Idm3/m~a) m Number Deign Sprinklers

Wet 15 Note 2 Note 2

Dry 25 Note 2 Note 2 500 (1900) 2

Wet 20 15 Note 2 500(1900) 2

Dry Does not apply Does not apply Does not apply

Wet 25 15 Note 2 500(1900) 2

Dry Does not apply Does not apply" Does not apply

Wet Does not apply 15 Note 2 500(1900) 2

Dry Does not apply Does not apply Does not apply

Wet 15 Note 2 Note 2 500(1900) 1 1/2

Dry 25 Note 2 Note 2

Solid Pried Storage Class I, II, and III Wet commodities up to 20 fi (6.1 m) with maximum 10 ft (3.0 Dry m) clearance to ceiling

15 Note 2 Note 2

25 Note 2 Note 2 500(1900) 1 1/2

Class IV conunodifies and unexl:~nded plastics up to 20 ft Wet Does not apply 15 lqote 2 (6.1 m) with nmximum 10ft 500(1900) 1 1/2 43.0 m~ clearance to ceiling Dry Does not apply Does not apply Does not apply

NOTE h Open wood joist construction. Fully firestop each joist channel to its full depth in intervals not exceeding 20 fi (6.2 m). In unfirestopped open wood joist construction, or if fu'estops are installed at intervals not exceeding 20 ft (6.1 m), increase the minimum operating pressures of Table A-5-3.4 by 40 percent. NOTE 2: The high pressure may be used, but the required number of design sprinklers may not be reduced from that required for ~te lower pressure.

Also, delete 8-2.4 in its entirety wldiout substitution. COMMITrEE STATEMENT: The deletion of Section 8-2.4 is for consistency. The new Table 8-1 which is from NFPA 13, A-5-3.4 recognizes d r / p i p e system for certain applications. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


73

N F P A 231 m F94 T C R

(Log #CP13) 231- 27- (8-1.2): Accept SUBMITTER: Technical Committee on General Storage, RECOMMENDATION: Delete current section 8-1.2. SUBSTANTIATION: Editorial as tiffs requirement is presented in Section 8-3.1. See Committee Action on Proposal 231-29 (Log #6). COMMITI'EE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #CPI ) 231- 28 - (8-2.3): Accept SUBMITI'ER: Technical Committee on General Storage, RECOMMENDATION: Revise 8-2.3 to read as follows:

8-2.3 Water supply duration shall be as indicated in Table 8-1. SUBSTANTIATION: The revision of this section is necessary for the coordination with the proposed new Table 8-1 as noted in Proposal 231-26 (Log #16). COMMITrEE ACTION: Accept. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITI'EE ACTION:


(Log #6) 231- 29 - (8-3.1): Accept SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 8-3.1 as follows:

"All requirements contained in NFPA 13 perminlng to Large Drop Sprinklers shall be followed except as modified by dais standard." SUBSTANTIATION: The reference to Chapter 9 in NFPA 13 must be eliminated, it no longer exists in NFPA 13. COMMITI'EE ACTION: Accept. NUMBER OF COMMITI'EE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITrEE ACTION:


(Log #7) 231- 30 - (Chapter 9): Accept in Principle SUBMITI'ER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Change the tide tO:

"Protection of All Commodities with ESFR Sprinklers." SUBSTANTIATION: This is the correct purpose of the chapter. COMMITTEE ACTION: Accept in Principle.

Revise the title to Chapter 9 to read as follows: Fire Protection - ESFR Sprinklers

COMMrITEE STATEMENT: Revision is for clarity - to provide eater conformance within the document for chapter titles.

ER OF COMMH~I'EE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #24) 231- 31 - (9-1.1, 9-1.1 Exception, 9-1.2, Table 9-1 (New), 9-2.1 and 9-3.1): Accept in Principle SUBMITI'ER: William E. Wilcox, Factory Mutual RECOMMENDATION: 1. Revise 9-1.1 as follows:

9-1.1" ESFR sprinklers having a nominal K factor of 14 shaU be permitted for the protection of palletized and solid-piled storage as indicated in Table 9.1. ESFR sprinklers listed for use in buildings up to 30 ft (9.1 m) high shall be used only in buildings up to 30 ft (9.1 m) high. ESFR sprinklers listed for use in buildings up to 40 ft (12.2 m) hil{h shall be used when building height exceeds 30 ft (9.1 m) to a maximum of 40 ft (12.2 m).

Revise existing exception, item 1 to read: "1. exposed plastics." 2. Revise 9-1.2 as follows: 9-1.2" ESFR sprinklers shall be permit ted for use in buildings

having maximum ceiling heights as indicated in Table 9.1, and with one of the following types of roof construction:

(a) smooth ceiling (b) bar joist (c) beam and girder (d) panel 3. Add a new Table 9-I as shown:

Table 9-1

Type of Storat~e Commodity Maximum Ht Maximum (NOTE 2) Sprinkler Design

of Storage (ill Buildin~ IHt(ft) Pressure ~ e s i )

Solid-piled and palledzed storage

Car toned unexpanded pl~dc, cartoned expanded plastic, and Class 1, 2, 3 and 4 commodities, all either encapsulated or unencapsul-ated Cartoned unexpanded Plastic, and Class 1, 2, 3 and 4 commodities, all either encapsulated or unencapsulated

25 30 50

35 40 (NOTE l) 75

NOTE 1: Only ESFR sprinklers specifically listed for 40 ft high building shall be used in building higher than 30 ft up to 40 ft. NOTE 2: M_aximum building height is to be measured tohe underside of the roof deck or ceiling.

74

NFPA 231 ~ F94 T CR

CONDITIONS AND RESULTS FOR ESFR SPRINKLERS WITH 40 g'f CEILING

TEST 1 SPRINKLER K s'rORAGE l i t (FT) 20 CEILING 19 CLEARANCE (rr) IGNITION 1 CENTERED BELOW PLUGGED HEAD NO htSL~ WIDTH {r D SPRINKLER 14.1 K-FACTOR SPRINKLER TEMPERATURE 165 RATING (o~) SPRINKLER RTi 50 SPRINKLER lO X 1o SPACING (ft X ft) SUPPRESSION YES NO. SPRINKLERS 1 OPENED FIRST SPK. 0:84 OPERATION (Min:Sec) LAST SPg. OPERATION PEAK CEILING 877 GAS TEMP. (°F I PEAK STEEL 106 TEMP. (°F)

* Test terminated 6 min after ignition. Fire suppressed using hose streams.

2 8 ESFR-1 K

20 25 19 14

l l

NO NO

14.4 14.1

165 165

48 50 1 0 X I 0 1 0 X I 0

YES NO 1 12"

0:87 0:41

5:58"

$58 $58

100 146

']Y-,ST CONDITIONS AND ~ T S FOR ESFR SPRINKLERS W l l l l 40 FF VEILING

TF_b'T SPR~KLER sroRAGE rrr (rr) CEILING ~ C E (V 0 IGNITION CENTEREJ) BE.LOW PLUGGED HEAD AISLE WIDTH 0~r) SPRINKLER K-FACTOR SPRINKLER TEMPERATURE RATING I'F? SPRINKLER RTI SPRINKLER SPACING (ftX R) SUPPRESSION NO. SPRINKLERS OPENED FIRST SPIL OPERATION

OPERATION PEAK CEILING GAS TEMP. ~°F) PEAK STEEL TEMP. (*F}

7 E, SFR-I

35 3

14.4

165

48 t 0 X 1 0

YES 4

0:34

0:35

1220

120

8 K1 25 14

4 14.1

155

50 10XI0

YES 1

313

88

4. Revise 9-2.1 as follows: , 9-2.1 ESFR sprinkler systems shall be designed to provide the

m i n i m u m operat ing pressure, as indicated in Table 9.1 for the commodity, storage he igh t a n d building height involved, to the twelve mos t hydraulically remote sprinklers based on flowing four sprinklers on each o f three branch lines. 5. Add a new 9-3.1 as follows" 9-3.1 The distance between branch lines and sprinklers on branch

lines sh,'dl no t more than 10 ft (3.1 m) nor less than 8 ft (2.4 m) for buildings h igher than 30 ft (9.1 m) up to 40 ft (12.2 m), an d not more than 12 ft (3.7 m) nor less than 8 ft (2.4 m) for buildings up to 30 ft ~9.1 m) high.

6. R e n u m b e r existing 9-3.1 and 9-3.2 and delete, the phrase "particularly Chapter 9 shall apply.. ." SUBSTANTIATION: For i tems 1, 2, 3, 4, and 5 above, full-scale fire tests suppor t the extension of ESFR sprinkler applicat ion to h igher buildings. Also, for i tem 1 above, the revision to the exception will allow car toned expanded plastics in line with what is now acceptable per the existing NFPA 13 on the basis of previously submi t ted full- scale fire test data.

I tem 6 above eliminates the reference to Chapter 9 in NFPA 13, which, because of the major rewrite in 1991, no longer covers ESFR sprinklers. T h e ESFR guidel ines are now covered in various chapters.

75

N F P A 231 ~ F 9 4 T C R

COMMITTEE ACTION: Accept in Principle. 1. Revise Chapter 9 as follows: 9-1" General. 9-1.1 ESFR sprinklers shall be permitted for the protection of

commodities as indicated in Table 9.1.

Table 9-1 ESFR Sprinkler Data

Type of Storage

Palletized and solid pile storage

Commodity

Cartoned unexpanded plastic, cartoned expanded plastic, uncartoned unexpanded plastic and Class l, If, IIl or IV commodities encapsulated or unencapsulated

Cartoned unexpanded plastic and Class I, II, IIl or IV commodides encapsulated or unencapsulated

Maximum Ht. of Storage

25'

20'

~5'

Maximum Hr. of Building (NOTE t)

30'

25'

40'

Nominal K Factor

13.5-14.5

11.0-11.5

13.5-14.5

Sprinkler Design Presemre

50

50

75

Commodity Limitation

NOTE

NOTE 2

NOTE I: Maximum building height is to be measured to the underside of the roof deck or ceiling. NOTE 2: Only ESFR sprinklers specifically listed for 40-fi high buildings should be used in buildings higher than 30 ft up to 40 ft. NOTE 3: Does not apply to any exposed plastic.

9-1.2" ESFR sprinklers shall be permit ted for use in buildings with the following types of roof construction:

(a) smooth ceiling (b) bar joist (c) beam and girder (d) panel 9-1.3 Roof slope sball not exceed 1 in./ft . 9-2" Water Supplies. 9-2.1 The design area sbail consist of the most hydraulically

demanding area of 12 sprinklers, consisting of 4 sprinklers on each of 3 branch lines. The design sball include a mimmum of 960 sq ft.

9-2.2 A minimum of 250 gpm shall be added to the sprinkler demand for combined large and small hose streams.

9-2.3 Water supply duratmn shall be at least 1 hour. 9-2.4 ESFR sprinklers shall be limited to water-pipe systems. • 9-3 Sprinkler System Design. 9.3.1 All requirements contained in NFPA 13, Standard for the

Installation of Sprinkler Systems, shall apply except as modified by this standard.

2. Revise ,Section A-9-1.2 to read as follows: "Storage in single story or multistory buildings is permissible

provided the maximum cei l ing/ roof height as listed in Table 9-1 is satisfied for each storage area. COMMITI'EE STATEMENT: Editorial changes are done for clarification and to accommodate the various types of ESFR sprinklers. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:

AFFIRMATIVE: 20 ABSTENTION: Lummus NOT RETURNED: Goonan, Spollen, Tbacker

COMMENT ON AFFIRMATIVE: THOMAS: In Table 90-1, add the following to Note 3 " . . .nor

cartoned expanded plastics." This should be this way as the ESFR K-11.2 sprinkler has this

restriction in its UL listing. EXPLANATION OF ABSTENTION:

LUMMUS: While I agree in principal with the proposal, I abstain from this item because I seem to r emember a s tatement being made to the effect that 'cartoned, expanded" plastic is no t part of the listing for the 11.0-11.5 K factor heads. I suggest that we revise Note 3 at the bottom of the proposed Table 901 to read as follows:

"NOTE 3: Does not apply to any exposed plastic nor to cartoned, expanded plastic."

(Log #8) 231- 32- (Chapter 10 (New)): Reject SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMI~NDATION: Revise the title to:

"Protection of All Commodities with Fast Response Suppression Sprinklers." SUBSTANTIATION: This is the correct purpose of this new chapter. COMMIT'fEE ACTION: Reject. COMMITI'EE STATEMENT: The committee feels that tiffs type of sprinkler is more appropriately classified as an ESFR sprinkler. See Committee Action on Proposal 251-31 (Log #24). NUMBER OF COMMITTI~E MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #9) 231-33- (10-6.2, D-I.I ): Accept in Principle SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise 10-6.2 as follows: "The sprinkler system and water supplies shall be maintained and

serviced in accordance with NFPA 25." NOTE: Also add NFPA 25 to 11-I.I.

SUBSTANTIATION: NFPA has developed this new document to standardize the frequency of maintenance tasks. COMMITI~E ACTION: Accept in Principle. Revise 1 0-6.2 to read as follows: 10-6.2 the sprinkler system and the water supplies shall be

inspected, tested and maintained in accordance with NFPA 25, Standard for the Inspection, Testing and Maintenance of Water- Based Fire Protection Systems.

In 13-1.1 delete the reference of NFPA 13A-1987, Recommended Practice for the Inspection, Testing, and Maintenance of Sprinkler Systems. COMMITI'EE STATEMENT: The revisions reflect the intent of the submitter and deletes the reference to NFPA 1 ~,A in Appendix D for consistency with the action proposed in Section 10-6.2. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


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N F P A 2 3 1 - - F 9 4 T C R

(Log #10) 231- 34 - (A-4-4.2): Accept in Principle SUBMITTER: Kenneth E. Isman, National Fire Sprinkler Assoc. RECOMMENDATION: Move the last sentence of A-4-4.2 to A-4-4. Also add, "Therefore, it is preferable to store plastic pallets outdoors where possible." SUBSTANTIATION: Move the sentence because it applies to wood pallets which are addressed in A-44.

include the additional sentence to indicate a preference as eliminated by our previous su bmission. COMMITTEE ACTION: Accept in Principle. Add the following as the last sentence to Section A-4-4 and delete in

its entirety A-4-4.2 without substitution: "The storage of emptywood/plastic pallets should not be permit-

ted in an unspdnklered warehouse containing other storage. ~ COMMITrEE STATEMENT: This action completes the intention of the submitter. The deletion ofA-4-4.2 was proposed because the information provided in A-4-4 adequately addresses file same content that is found in A-4-4.2. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITTEE ACTION:


(Log #11) 231- 35 - (Appendix B): Accept in Principle SUBMITTER: Kenneth E. lsman, National Fire Sprinkler Assoc. RECOMMENDATION: Revise the last sentence of the last paragraph on page 231-23 to read:

"Therefore, it is arbitrarily decided to pick 0.32 gpm/sq ft over 1800 sq ft." SUBSTANTIATION: People in file field spend hours trying to find a madlemafical formula, or fire test to show that 0.32 is the right number. They don' t understand fllat the decision is arbitrary.

COMMITI'EE ACTION: Accept in Principle. Delete file word 'therefore" fi'om the proposal.

COMM]T]'EE STATEMENT: Clarifies the intent of the submitter. NUMBER OF COMMITTEE MEMBERS ELIGIBLE TO VOTE: 24 VOTE ON COMMITI°EE ACTION:

AFFIRMATIVE: 18 NEGATIVE: Barrltt, Thomas ABSTENTION: Lummus NOT RETURNED: Goonan, Spollen, Thacker

EXPLANATION OF NEGATIVE: BARRITT: I have voted negatively on 231-35 because I believe if all

the other changes are made, then the current text in Appendix B should be deleted as there will be no curves in Chapter 7o f the standard that the examples refer to. The suggestedchange to tile current text in Appendix B is alapropriate, but it i~ irrelevant since Appendix B should be deleted m its entirety if 231-20 is acce~ted.

For clarity I would also suggest that in 231-20 that it be speofically stated that curves 72-2.2(a) through (e), 7-2.2.2, and 7-2.2.3 are to be deleted. This will avoid file possibility of new material being inserted without the old material being deleted - somedling that has h~sPened in the past.

o in 231-20, under Table 7-2.2 Note 2, the first sentence should read:

"For closed array, reduce areas from 2500 sq ft to 2000 sq ft." THOMAS: Existing Appendix B no longer applicable due to

proposed changes to Chapter 7. EXPLANATION OF ABSTENTION:

LUMMUS: I abstain from this item because the proposed revision of Chapter 7 (see Log #CP8) makes the current Appendix B obsolete. I understand a new example is being written which will apply to the proposed Chapter 7.

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RepoR ofthe Committee on General Storage William P ... - NFPA

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