Dedy Daftar Isi
-
Upload
dedybrianericsonnainggolan -
Category
Documents
-
view
220 -
download
4
description
Transcript of Dedy Daftar Isi
DAFTAR ISI
HALAMAN JUDUL..........................................................................................................i
SURAT PERMOHONAN KERJA PRAKTIK...............................................................ii
BALASAN SURAT PERMOHONAN KERJA PRAKTIK...........................................iii
SURAT PERINTAH KERJA PRAKTIK.......................................................................iv
SURAT KETERANGAN KERJA PRAKTIK................................................................v
HALAMAN PENGESAHAN...........................................................................................vi
NILAI KERJA PRAKTIK...............................................................................................vii
NILAI KERJA PRAKTIK...............................................................................................viii
LEMBAR PENGESAHAN...............................................................................................ix
KATA PENGANTAR.......................................................................................................x
DAFTAR ISI......................................................................................................................xii
DAFTAR GAMBAR.........................................................................................................xv
DAFTAR TABEL..............................................................................................................xvi
BAB I PENDAHULUAN
1.1 Latar Belakang...............................................................................................................1
1.2 Alasan Pemilihan Lokasi Kerja Praktik.........................................................................2
1.3 Tujuan Kerja Praktik.....................................................................................................2
1.4 Batasan Masalah............................................................................................................2
1.5 Metode Penyusunan Laporan........................................................................................3
1.6 Sistematika Penulisan....................................................................................................3
1.7 Waktu dan Tempat Pelaksanaan KP..............................................................................3
BAB II PT. PERTAMINA (PERSERO)RU IV CILACAP
2.1 Sejarah Singkat PT. PERTAMINA (Persero) RU IV Cilacap......................................4
2.2 Pembangunan KilangMinyak PT PERTAMINA (PERSERO) RU IV.........................6
2.2.1 Kilang Minyak I..................................................................................................6
2.2.2 Kilang Minyak II.................................................................................................7
2.2.3 Kilang Paraxylene...............................................................................................9
2.2.4 Proyek Debottlenecking Cilacap (DPC)..............................................................10
2.2.5 Modernisasi Instrumen Kilang dengan DCS.......................................................13
2.3 Produksi Kilang PT. PERTAMINA (PERSERO) RU IV Cilacap dan Kapasitasnya..13
x
2.4 Lokasi Dan Tata Letak..................................................................................................15
2.4.1 Lokasi Pabrik.......................................................................................................15
2.4.2 Tata Letak Kilang................................................................................................16
2.5 Visi , Misi dan Logo PT. Pertamina.............................................................................20
2.6 Visi dan Misi PERTAMINA RU IV CILACAP..........................................................22
2.7 Sistem Organisasi dan Kepegawaian Pertamina RU IV................................................24
BAB III DASAR TEORI
3.1 Rotating Equipment.......................................................................................................26
3.2 Pompa............................................................................................................................26
3.2.1 Klasifikasi Pompa................................................................................................27
3.2.2 Terminologi Pompa.............................................................................................29
3.3 Pompa Sentrifugal.........................................................................................................29
3.3.1 Prinsip Kerja Pompa Sentrifugal..........................................................................30
3.3.2 Macam-macam Pompa Sentrifugal......................................................................31
3.3.3 Jenis Impeller Pompa Sentrifugal.........................................................................32
3.3.4 Efisiensi Pompa Sentrifugal.................................................................................33
3.3.5 Kurva Performansi Pompa Sentrifugal.................................................................35
3.3.6 Sistem Proteksi Pompa Sentrifugal......................................................................35
3.3.7 Jenis Pompa Sentrifugal Menurut API.................................................................37
3.3.8 Dasar Perhitungan.................................................................................................38
BAB IV PEMBAHASAN
4.1 VIBRATION....................................................................................................................44
4.1.1 Sejarah Singkat Vibration.....................................................................................44
4.1.2 Dasar Teori...........................................................................................................44
4.1.2.1 Derajat Kebebasan.....................................................................................44
4.1.2.2 Sistem Discrete dan Kontinyu...................................................................44
4.1.2.3 Klasifikasi Getaran.....................................................................................45
4.1.2.4 Prosedur Analisis Getaran.........................................................................45
4.1.2.5 Parameter Getaran.....................................................................................45
4.2 POMPA 57P2.................................................................................................................47
4.2.1 Spesifikasi Pompa 57P2.......................................................................................47
4.2.2 Gambar Teknik Pompa 57P2................................................................................48
xi
4.2.3 Part List dari Gambar Teknik Pompa 57P2.........................................................49
4.3 PERMASALAHAN HIGH VIBRATION POMPA 57P2...............................................51
4.3.1 Faktor Penyebab High Vibration..........................................................................51
4.3.1.1 Unbalance.................................................................................................52
4.3.1.1.1 Kerusakan yang sering dianggap unbalance.............................52
4.3.1.2 Misalignment............................................................................................53
4.3.1.3 Mechanical Looseness (kekendoran)........................................................53
4.3.1.4 Bending (Bent Shaft).................................................................................53
4.3.1.5 Eccentric Journal / Rotor.........................................................................53
4.3.1.6 Defective Antifriction Bearing..................................................................54
4.3.2 Faktor Penyebab High Vibration pada Pompa 57P2.............................................55
4.3.2.1 Unbalance pada Impeller..........................................................................55
4.3.3 Permasalahan Akibat High Vibration Pompa 57P2...............................................57
4.3.3.1 Mechanical Seal Bocor.............................................................................57
4.3.3.2 Defect pada Ball Bearing..........................................................................59
4.3.3.3 Mechanical Looseness pada Inducer........................................................60
4.3.3.4 Kontaminasi pada Heavy Fuel Oil............................................................63
4.3.3.5 Scratch/Rubbing pada Part.......................................................................64
4.3.3 Evaluasi dan Tindak Lanjut dari High Vibration Pompa 57P2.............................65
4.3.4 Kondisi Pompa 57P2 Setelah Perbaikan................................................................68
BAB V PENUTUP
5.1. Kesimpulan...................................................................................................................69
5.2. Saran ...........................................................................................................................70
DAFTAR PUSTAKA........................................................................................................72
LAMPIRAN
xii
DAFTAR GAMBAR
Gambar 2.1 Lokasi Refinery Unit PERTAMINA di Seluruh Indonesia............................6
Gambar 2.2 Lokasi Pabrik PT. PERTAMINA (PERSERO RU IV Cilacap.......................16
Gambar 2.3 Logo PT. PERTAMINA..................................................................................21
Gambar 2.4 Struktur Organisasi PERTAMINA RU IV Cilacap.........................................25
Gambar 3.1 Contoh Pompa Sentrifugal...............................................................................30
Gambar 3.2 Kurva Performansi Pompa Sentrifugal............................................................35
Gambar 4.1 Gambar Teknik Pompa 57P2...........................................................................48
Gambar 4.2 High Vibration Causes....................................................................................51
Gambar 4.3 Analisa Spectrum - High Vibration Pompa 57P2............................................55
Gambar 4.4 High Vibration Pompa 57P2............................................................................57
xiii
DAFTAR TABEL
Tabel 2.1 Kapasitas Terpasang Kilang I..............................................................................7
Tabel 2.2 Kapasitas Terpasang Kilang II............................................................................9
Tabel 2.3 Kapasitas Terpasang Kilang Paraxylene.............................................................10
Tabel 2.4 Jenis Pekerjaan dalam Proyek Debottlenecking Cilacap.....................................11
Tabel 2.5 Kapasitas di FOC I (dalam TPA)........................................................................14
Tabel 2.6 Kapasitas di FOC II (dalam TPA).......................................................................14
Tabel 2.7 Kapasitas di LOC I/II/III (dalam TPA)...............................................................14
Tabel 3.1 Jenis Pompa Sentrifugal Menurut API................................................................37
Tabel 4.1 Spesifikasi Pompa 57P2......................................................................................47
Tabel 4.2 Part Pompa 57P2 Halaman 1...............................................................................49
Tabel 4.2 Part Pompa 57P2 Halaman 2...............................................................................50
Tabel 4.3 Unbalance pada Impeller.....................................................................................56
Tabel 4.4 Mechanical Seal...................................................................................................58
Tabel 4.5 Mechanical Seal Pompa 57P2 yang mengalami crack........................................59
Tabel 4.6 Ball Bearing.........................................................................................................59
Tabel 4.7 Pemasangan Inducer............................................................................................61
Tabel 4.8 Inducer Run Out (TIR) dan Inducer Pompa 57P2...............................................62
Tabel 4.9 Kontaminasi Fluida.............................................................................................63
Tabel 4.10 Scratch/Rubbing Part.........................................................................................64
Tabel 4.11 Tindak Lanjut Perusahaan.................................................................................65
xiv