vii

DAFTAR ISI

HALAMAN JUDUL ........................................................................................................................... i

LEMBAR PENGESAHAN 1............................................................................................................. ii

LEMBAR PENGESAHAN 2............................................................................................................ iii

INTISARI .......................................................................................................................................... iv

KATA PENGANTAR ........................................................................................................................ v

DAFTAR ISI .................................................................................................................................... vii

DAFTAR GAMBAR ........................................................................................................................ ix

DAFTAR TABEL ............................................................................................................................... x

BAB I PENDAHULUAN .............................................................................................................. I-1

I.1 Latar Belakang ................................................................................................................ I-1

I.2 Tujuan Kerja Praktek ..................................................................................................... I-2

I.3 Manfaat Kerja Praktek ................................................................................................... I-3

I.4 Ruang Lingkup Kerja Praktek ........................................................................................ I-3

I.5 Waktu Pelaksanaan Kerja Praktek ................................................................................. I-4

BAB II TINJAUAN PUSTAKA ................................................................................................... II-1

II.1 Sejarah PT. Petrokimia Gresik ..................................................................................... II-1

II.2 Pengertian Produk Pabrik .............................................................................................. II-2

BAB III TINJAUAN UMUM PERUSAHAAN ......................................................................... III-1

III.1 Sejarah Berdirinya PT. Petrokimia Gresik ................................................................. III-1

III.2 Struktur Organisasi ..................................................................................................... III-3

III.3 Visi dan Misi PT. Petrokimia Gresik ......................................................................... III-5

III.4 Tata Letak PT. Petrokimia Gresik .............................................................................. III-5

BAB IV PROSES PRODUKSI ................................................................................................... IV-1

IV.1 Persiapan Bahan ......................................................................................................... IV-1

IV.1.1 Ammonia .......................................................................................................... IV-1

IV.1.2 Urea ................................................................................................................ IV-11

IV.1.3 ZA I/III ........................................................................................................... IV-12

IV.2 Uraian Proses Produksi ............................................................................................ IV-12

IV.2.1 Ammonia ........................................................................................................ IV-12

IV.2.2 Urea ................................................................................................................ IV-27

IV.2.3 ZA I/III ........................................................................................................... IV-46

IV.3 Gudang Bahan Baku ................................................................................................ IV-51

IV.3.1 Ammonia ........................................................................................................ IV-51

IV.3.2 Urea ................................................................................................................ IV-51

viii

V.1.3 ZA I/III ............................................................................................................ IV-52

BAB V UTILITAS DAN PENGOLAHAN LIMBAH ................................................................ V-1

V.1 Utilitas .......................................................................................................................... V-1

V.1.1 Unit Penyediaan Air ........................................................................................... V-1

V.1.2 Lime Softening Unit ........................................................................................... V-2

V.1.3 Cooling Tower .................................................................................................... V-4

V.1.4 Unit Demineralisasi ............................................................................................ V-5

V.1.5 Penyediaan Steam............................................................................................. V-10

V.1.6 Unit Pembangkit Tenaga Listrik ...................................................................... V-13

V.2 Pengolahan Limbah .................................................................................................... V-14

V.2.1 Limbah Cair ...................................................................................................... V-14

V.2.2 Limbah Gas ...................................................................................................... V-19

BAB VI ANALISIS LABORATORIUM ................................................................................... VI-1

VI.1 Laboratorium Produksi ............................................................................................... VI-1

VI.2 Prosedur Analisa ........................................................................................................ VI-1

BAB VII KESELAMATAN DAN KESEHATAN KERJA ....................................................... VII-1

VII.1 Pendahuluan ............................................................................................................. VII-1

VII.2 Dasar Pelaksanaan K-3 ............................................................................................. VII-1

VII.3 Sebab Kecelakaan ..................................................................................................... VII-2

VII.4 Kerugian Akibat Kecelakaan Kerja .......................................................................... VII-3

VII.5 Batasan dan Sasaran Keselamatan Kerja .................................................................. VII-3

VII.6 Kebijakan K-3 .......................................................................................................... VII-4

VII.7 Organisasi K-3 .......................................................................................................... VII-5

VII.8 Tugas Bagian Keselamatan Kerja ............................................................................ VII-7

VII.9 Program Kecelakaan Nihil ....................................................................................... VII-8

VII.10 Pengukuran Keberhasilan K-3 ................................................................................ VII-9

VII.11 Alat Pelindung Diri ............................................................................................. VII-10

BAB VIII PENUTUP ............................................................................................................... VIII-1

VIII.1 Kesimpulan .......................................................................................................... VIII-1

VIII.2 Saran..................................................................................................................... VIII-1

DAFTAR PUSTAKA ...................................................................................................................... xi

TUGAS KHUSUS

LAMPIRAN