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LAPORAN KULIAH KERJA NYATA – PRAKTIK (KKN – P)

ANALISA PERENCANAAN KEDATANGAN NAPHTHA

MENGGUNAKAN METODE TRANSPORTASI PROGRAM

LINIER UNTUK UNIT NPU (Naphtha Processing Unit) (Studi Kasus PT. Pertamina (PERSERO) RU VI Balongan)

Disusun oleh:

DESSY NURVITARINI

NIM. 115060705111001

JURUSAN TEKNIK INDUSTRI

FAKULTAS TEKNIK

UNIVERSITAS BRAWIJAYA

APRIL 2014

ii

KATA PENGANTAR

Puji syukur dipanjatkan atas kehadirat Allah SWT karena atas limpahan rahmat dan

hidayah–Nya laporan Kuliah Kerja Nyata – Praktik (KKN – P) ini dapat terselesaikan.

Di dalam penyusunan laporan ini, banyak hambatan yang penyusun hadapi. Namun,

berkat bimbingan dan dukungan dari berbagai pihak, hambatan-hambatan tersebut dapat

teratasi. Untuk itu, pada kesempatan kali ini diucapkan terima kasih kepada:

1. Bapak Ishardita Pambudi Tama ST., MT., Ph.D., selaku Ketua Jurusan Teknik

Industri, Fakultas Teknik, Universitas Brawijaya.

2. Ibu Agustina Eunike, ST., MT., MBA., selaku dosen pembimbing Kuliah Kerja Nyata

– Praktik (KKN – P) Jurusan Teknik Industri, Fakultas Teknik, Universitas Brawijaya.

3. Ibu Fatimah Aradani, selaku HR Development Section Head, PT. Pertamina (Persero)

RU VI Balongan.

4. Ibu Arutilamiliati, selaku Refinery Planning Section Head, PT. Pertamina (Persero)

RU VI Balongan.

5. Bapak Angga Wastu Nugraha, selaku pembimbing pembimbing Kuliah Kerja Nyata –

Praktik (KKN – P) PT. Pertamina (Persero) RU VI Balongan.

6. Pihak-pihak yang telah membantu penyusunan laporan tugas besar ini yang tidak

dapat penyusun sebutkan satu per satu.

Di samping itu, penyusun menyadari bahwa banyak sekali kekurangan dalam

penyusunan laporan ini. Oleh sebab itu, penyusun mohon maaf apabila ada kesalahan-

kesalahan di dalam penyusunannya. Demikian pula halnya, penyusun juga mengharapkan

kritik dan saran yang bersifat konstruktif demi penyempurnaan penyusunan laporan tugas

besar ini agar ke depannya dapat menjadi lebih baik dan sempurna.

Akhir kata, dengan selesainya penyusunan tugas besar ini, maka seluruh isi laporan

tugas besar ini sepenuhnya menjadi tanggung jawab penyusun dan seberapa pun

sederhananya laporan tugas besar ini, penyusun harapkan mempunyai suatu manfaat bagi

semua pihak yang membacanya.

Malang, April 2014

Penyusun

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DAFTAR ISI

Halaman

KATA PENGANTAR .................................................................................................................. ii

DAFTAR ISI ................................................................................................................................. iii

DAFTAR TABEL ......................................................................................................................... vi

DAFTAR GAMBAR .................................................................................................................... viii

BAB I PENDAHULUAN

1.1 Latar Belakang ....................................................................................................................... 1

1.2 Lingkup Observasi … ............................................................................................................. 1

1.3 Manfaat .................................................................................................................................. 2

BAB II GAMBARAN UMUM PERUSAHAAN

2.1 PT. Pertamina (Persero) ......................................................................................................... 3

2.2 Sejarah PT. Pertamina (Persero) ............................................................................................ 3

2.3 Sejarah PT. Pertamina (Persero) RU VI Balongan ................................................................. 4

2.3.1Visi, Misi, dan Tujuan PT. Pertamina (Persero) RU VI Balongan ................................. 6

2.3.2 Struktur Organisasi PT. Pertamina RU VI Balongan .................................................... 7

2.3.3 Refinery Planning & Optimization ................................................................................ 8

2.4 Sistem Perencanaan dan Tata Letak Produksi ....................................................................... 12

2.4.1 Sistem Perencanaan Bahan Baku dan Produksi ............................................................. 12

2.4.2 Sistem Penjadwalan ...................................................................................................... 12

2.4.3 Tata Letak Fasilitas Produksi ......................................................................................... 13

2.5 Proses Produksi ....................................................................................................................... 14

2.5.1 HSC (Hydro Skimming Complex) .................................................................................. 15

2.5.2 DHC (Distillation and Hydrotreating Complex) ........................................................... 16

2.5.3 RRC (Residu Catalytic Cracking) .................................................................................. 17

2.5.4 OM (Oil Movement) ....................................................................................................... 18

2.6 Produk PT. Pertamina (Persero) RU VI Balongan .................................................................. 18

BAB III PELAKSANAAN KKN-P

3.1 Waktu dan Tempat Pelaksanaan ............................................................................................ 21

3.2 Jurnal Kegiatan KKN-P .......................................................................................................... 21

3.3 Metode Penelitian ................................................................................................................... 22

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BAB IV ANALISA PERENCANAAN KEDATANGAN NAPHTHA DENGAN METODE

TRANSPORTASI PROGRAM LINIER

4.1 Situasi Masalah ...................................................................................................................... 24

4.2 Rumusan Masalah ................................................................................................................... 25

4.3 Tujuan Penelitian ................................................................................................................... 25

4.4 Batasan Penelitian ................................................................................................................... 25

4.5 Asumsi Penelitian ................................................................................................................... 26

4.6 Tinjauan Pustaka ..................................................................................................................... 26

4.6.1 Metode Analisa Transportasi Program Linier ................................................................ 27

4.6.1.1 Metode Heuristic (The Least Cost Assigment Rountine Method) .................... 30

4.6.1.2 Northwest – Corner Ruler Method .................................................................... 31

4.6.1.3 Vogel’s Approximation Method ....................................................................... 32

4.6.1.4 Stepping Stone .................................................................................................. 34

4.6.2 Reorder Point ................................................................................................................. 38

4.7 Pengumpulan Data ................................................................................................................. 39

4.7.1 Data Utility Factor dari Kilang RU VI Balongan .......................................................... 39

4.7.2 Data Lead Time Kedatangan Naphtha dari Kilang RU lain .......................................... 40

4.7.3 Data Jumlah Kedatangan Naphtha ................................................................................. 40

4.7.4 Data Komposisi Naphtha ............................................................................................... 41

4.7.5 Data Harga Naphtha ....................................................................................................... 42

4.7.6 Data Biaya Sewa Kapal ................................................................................................. 42

4.7.7 Data Kapasitas Pengiriman ............................................................................................ 42

4.8 Pengolahan Data ..................................................................................................................... 43

4.8.1 Metode Heuristic (Least Cost) ....................................................................................... 43

4.8.2 Northwest Corner Ruler Method (NCR) ........................................................................ 43

4.8.3 Vogel’s Approximation Method (VAM) ....................................................................... 44

4.8.4 Stepping Stone dari Northwest Corner Ruler Method (NCR) ....................................... 44

4.8.6 Stepping Stone dari Vogel’s Approximation Method (VAM) ....................................... 45

4.8.7 Metode Terpilih.............................................................................................................. 46

4.9 Analisa Kedatangan dan Alokasi Bahan Baku Naphtha ......................................................... 47

4.9.1 Jumlah Penggunaan Naphtha ......................................................................................... 47

4.9.1.1 Jumlah Penggunaan Naphtha dari RU II ........................................................... 47

4.9.1.2 Jumlah Penggunaan Naphtha dari RU III .......................................................... 48

4.9.1.3 Jumlah Penggunaan Naphtha dari RU IV ......................................................... 48

4.9.1.4 Jumlah Penggunaan Naphtha dari RU V ........................................................... 49

4.9.2 Reorder Point (ROP) ..................................................................................................... 50

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4.9.2.1 Reorder Point (ROP) untuk RU II .................................................................... 50

4.9.2.2 Reorder Point (ROP) untuk RU III ................................................................... 51

4.9.2.3 Reorder Point (ROP) untuk RU IV ................................................................... 52

4.9.2.4 Reorder Point (ROP) untuk RU V .................................................................... 52

4.9.3 Alokasi Bahan Baku Naphtha ........................................................................................ 53

4.9.3.1 Alokasi Bahan Baku Naphtha dari RU II .......................................................... 53

4.9.3.2 Alokasi Bahan Baku Naphtha dari RU III ......................................................... 53

4.9.3.3 Alokasi Bahan Baku Naphtha dari RU IV ........................................................ 54

4.9.3.4 Alokasi Bahan Baku Naphtha dari RU V .......................................................... 54

4.9.4 Analisa dan Pembahasan ................................................................................................ 54

4.10 Gantt Chart Kedatangan Naphtha ........................................................................................... 57

BAB V PENUTUP

5.1 Kesimpulan ............................................................................................................................. 58

5.2 Saran ....................................................................................................................................... 58

DAFTAR PUSTAKA

LAMPIRAN

vi

DAFTAR TABEL

Halaman

BAB II TINJAUAN PUSTAKA

Tabel 2.1 Kilang PT. Pertamina (Persero) ............................................................................ 4

BAB III PELAKSANAAN KKN-P

Tabel 3.1 Jurnal Kegiatan KKN-P ........................................................................................ 21



Tabel 4.1 Transportasi Program Linier ................................................................................. 27

Tabel 4.2 Metode Heuristik ................................................................................................... 30

Tabel 4.3 Northwest – Corner Ruler Method ........................................................................ 31

Tabel 4.4 Metode Vogel’s Approximation (1) ...................................................................... 33





Tabel 4.9 Metode Stpping Stone (1) ..................................................................................... 35

Tabel 4.10 Metode Stpping Stone (2) ................................................................................... 36



Tabel 4.13 Utility Factor ....................................................................................................... 40

Tabel 4.14 Lead Time ............................................................................................................ 40

Tabel 4.15 Jumlah Kedatangan Naphtha ............................................................................... 41

Tabel 4.16 Komposisi Naphtha ............................................................................................. 41

Tabel 4.17 Data Harga Naphtha ............................................................................................ 42

Tabel 4.18 Biaya Sewa Kapal .............................................................................................. 42

Tabel 4.19 Data Kapasitas Pengiriman ................................................................................. 41

Tabel 4.20 Metode Terpilih ................................................................................................... 46

Tabel 4.21 Penggunaan Naphtha RU II ................................................................................ 47

Tabel 4.22 Penggunaan Naphtha RU III ............................................................................... 48

Tabel 4.23 Penggunaan Naphtha RU IV ............................................................................... 49

Tabel 4.24 Penggunaan Naphtha RU V ................................................................................ 49

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Tabel 4.25 Reorder Point ...................................................................................................... 50

Tabel 4.26 Reorder Point untuk RU II .................................................................................. 51

Tabel 4.27 Reorder Point untuk RU III ................................................................................ 51

Tabel 4.28 Reorder Point untuk RU IV ................................................................................ 52

Tabel 4.29 Reorder Point untuk RU V ................................................................................. 52

Tabel 4.30 Order Cost RU II ................................................................................................ 55

Tabel 4.31 Order Cost RU III ............................................................................................... 55

Tabel 4.32 Order Cost RU IV ............................................................................................... 55

Tabel 4.33 Order Cost RU V ................................................................................................ 55

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DAFTAR GAMBAR

Halaman

BAB II GAMBARAN UMUM PERUSAHAAN

Gambar 2.1 Peta Lokasi Kilang PT. Pertamina (Persero) ..................................................... 4

Gambar 2.2 Struktur Organisasi PT. Pertamina (Persero) RU VI Balongan ........................ 7

Gambar 2.3 Penyusunan Rencana Kerja Tahunan RK .......................................................... 9

Gambar 2.4 Kegiatan Perencanaan Bulanan ......................................................................... 9

Gambar 2.5 Struktur Organisasi Divisi Refinery Planning & Optimization (RP&O)........... 11

Gambar 2.6 Tata Letak Produksi RU VI Balongan ............................................................... 14

Gambar 2.7 Simplified Flow Diagram – RU VI Balongan ................................................... 14

BAB III Pelaksanaan KKN-P

Gambar 3.1 Flowchart Pelaksanaan KKN-P ........................................................................ 22



Gambar 4.1 Model Persediaan Statis EOQ ........................................................................... 38

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DAFTAR PUSTAKA

Ahyari, Agus. 1999. Efisiensi Persediaan Bahan, Edisi Kedua, Cetakan Kelima.

Yogyakarta: Universitas Gadjah Mada.

Gaspersz, Vincent. 2004. Production Planning and Inventory Control. Jakarta: PT.

Gramedia Pustaka Utama.

Kuasa, Beta Viva Marga. 2012. Optimasi Rencana Pengolahan Gross Margin Bulan Juni

2012 Dengan Menggunakan Linear Programming (Studi Kasus Pada PT Pertamina

Persero RU VI Balongan). Semarang: Universitas Dipenogoro.

Nasution, Arman Hakim dan Yudha Prasetyawan. 2008. Perencanaan dan Pengendalian

Produksi. Yogyakarta: Graha Ilmu.

Octora, Lita. 2012. Penentuan Ukuran Pemesanan Crude Oil Menggunakan Metode

Economic Order Quantity (EOQ) Serta Perhitungan Safety Stock Untuk

Mengantisipasi Terjadinya Penurunan Utilitas Produksi Pada Crude Destilation

Unit (CDU) PT Pertamina (Persero) RU VI Balongan. Bandung: Institut Teknologi

Bandung.

Tersine, Richard. J. 1994. Principles of Inventory and Materials Management. New Jersey:

Prentice-Hall.

Wignjosoebroto, Sritomo. 2003. Tata Letak Pabrik dan Pemindahan Bahan. Surabaya:

Guna Widya.

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