Usulan jadwal penggantian dan pemeriksaan komponen berdasarkan Metode Preventive Maintenance pada mesin-mesin N2 plant di Kilang Polypropyline Pertamina Unit Pengolahan III Plaju-Sungai Gerong

DETAIL KOLEKSI

Usulan jadwal penggantian dan pemeriksaan komponen berdasarkan Metode Preventive Maintenance pada mesin-mesin N2 plant di Kilang Polypropyline Pertamina Unit Pengolahan III Plaju-Sungai Gerong

Oleh : Jewelry Silast Matkussa

Info Katalog

Penerbit : FTI - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2004

Pembimbing 1 : Sumiharni Batubara

Subyek : Machinery in industry - Maintenance and repair

Kata Kunci : engine component replacement schedule, engine component inspection, Preventive Maintenance Method, N

Status Posting : Published

Status : Lengkap

File Repositori

No.	Nama File	Hal.
1.	2004_TA_TI_06399138_Halaman-Judul.pdf	30
2.	2004_TA_TI_06399138_Bab-1.pdf
3.	2004_TA_TI_06399138_Bab-2.pdf
4.	2004_TA_TI_06399138_Bab-3.pdf
5.	2004_TA_TI_06399138_Bab-4.pdf
6.	2004_TA_TI_06399138_Bab-5.pdf
7.	2004_TA_TI_06399138_Bab-6.pdf
8.	2004_TA_TI_06399138_Bab-7.pdf
9.	2004_TA_TI_06399138_Daftar-Pustaka.pdf
10.	2004_TA_TI_06399138_Lampiran.pdf

Abstrak
Abstract

P ERTAMINA UP III Plaju-Sungai Gerong merupakan Badan Usaha Milik Negara (BUMN) yang bergerak pada pengolahan minyak mentah menjadi berbagai macam produk BBM dan Non-BBM. Dari berbagai produk Non-BBM yang diproduksi salah satunya adalah gas nitrogen (N2), yang dipakai untuk menunjang kegiatan perawatan pada mesin-mesin kilang. Melihat kenyaataan bahwa banyaknya mesinÂ mesin produksi yang bekerja secara terus-menerus (24 jam), maka N2 Plant merupakan satu-satunya fasilitas yang sangat dibutuhkan perusahaan dalam menghasilkan gas nitrogen untuk mendukung kegiatan perawatan pada mesin-mesin kilang yang mengalami kerusakan.Karena begitu pen tingnya N2 Piant bagi perusahaan, maka penulis memilihnya sebagai tempat penelitian untuk menerapkan perawatan dan pencegahan yang terjadwal, yang meliputi jadwal penggantian dan pemeriksaan komponen berdasa rkan metode minimasi total downtime pada mesin-mesin produksi N2 Plant.Pada tahap awal adalah menentukan mesin kritis dengan mengambil mesinÂmesin kompresor sebagai mesin kritisnya, dikarenakan mesin-mesin tersebut berperan penting dalam proses produksi gas nitrogen dari awal hingga akhir. Mesin-mesin tersebut adalah mesin kompresor Sentrifugal (K-10 l A & B), kompresor Reciprocating (K-104) dan kompresor Membran (6K-002 A & B), dengan total waktu kerusakan masing masingnya adalah 6919.2, 6694.2 dan 5089.8 menit. Dari mesin-mesin kompresor tersebut diketahui komponen-komponen yang sering rusak dan mempunyai fungsi penting. Komponen-komponen tersebut adalah Lube oil cooler, Filter lube oil, Suction filter, Inter stage cooler, Re alignment coupling, Valve 1st dan 2st stage, Ring piston, Wipper packing unit, Cooler, Diaphragm (membran) 1s1 dan 2s1 stage, V belt dan Lube oil pump.Langkah perhitungan untuk menghasilkan jadwal penggantian dan pemeriksaan bagi komponen-komponen tersebut adalah penentuan distribusi bagi penyebaran data kerusakan dengan Least Square Curve Fitting, pengujian masing-masing distribusi sesuai dengan index of fit terbesar dengan uji-uji khusus, dan penentuan parameterÂ parameter, MTTF, MTTR dengan Maximum Likelihood Estimator.Penentuan interval penggantian berdasarkan metode minimasi downtime denganmodel age replacement menghasilkan jadwal penggantian sebagai berikut : pada mesin kompresor Sentrifugal (Inter Stage Cooler sebesar 1290 jam, Lube oil cooler sebesar 524 jam, Re Alignment Coupling sebesar 1310 jam, Filter lube oil sebesar 616 jam, Suction filter sebesar 861 jam) , mesin kompresor Reciprocating (Ring Piston sebesar 1313 jam, Wipper Packing Unit sebesar 1314 jam, Cooler sebesar 796 jam, Valve 1st & 2st stage sebesar 1350 jam), dan mesin kompresor Membran (Diaphragm 1st & 2st sebesar 1266 jam, Lube oil Pump sebesar 1292 jam , V-belt sebesar 1301 jam, Valve 1st& 2st stage sebesar 1273 jam) . Sedangkan penentuan interval pemeriksaan per bulan berdasarkan metode minimasi downtime, yaitu : pada mesin kompresor Sentrifugal (Inter Stage Cooler 2 kali, Lube oil cooler 2 kali, Re Alignment Coupling 2 kali, Filter lube oil 2 kali, Suction filter 2 kali), mesin kompresor Reciprocating (Ring Piston 2 kali, Wipper Packing Unit 2 kali, Cooler 2 kali, Valve 1st & 2st stage 1 kali), dan mesin kompresor Membran (Diaphragm 1st & 2st 2 kali, Lube oil Pump 2 kali, V-belt 2 kal!, Valve Ist & 2st stage l kali).

, PERTAMINA UP III Plaju-Sungai Gerong is BUMN that peripatetic at processing of crude oil become assorted product ofBBM and Non-BBM . From various product of Non-BBM produced one of them is nitrogen gas ( N2), used to support activity of treatment at factory machines . Now days that to the number of laboring production machines continuously ( 24 hour/clock), hence N2 Plant is the single facility is which is very required by company in yielding nitrogen gas to support activity of treatment at natural factory machine of damage.Because important so him of N2 Plant for company, hence writer choose him asresearch place to apply prevention and treatment which was schedule, covering replacement schedule and inspection of component pursuant to method of minimize total of downtime at machines produce N2 Plant.In the early stage is to determine critical machine taken machines of compressoras critical machines, because of the machines play important role in nitrogen gas production process from early until final. Centrifugal compressor machine ( K-101 A & B), Reciprocating compressor ( K-104) and Diaphragm compressor ( 6K-002 A & B), totally the time damage of each of him is 6919.2, 6694.2 and 5089.8 minute. The machines of compressor the known by components which often destroy and have important function . Components is Lube oil cooler, Filter lube oil, Suction filter, Inter stage cooler, Re alignment coupling, Valve 1st and 2st stage, Ring piston, Wiper packingunit , Cooler, Diaphragm (membran) 1st and zst stage, V belt and Lube oil pump.Calculation step to yield replacement schedule and inspection for components isdetermination of distribution for spreading of damage data with Least Square Curve Fitting, examination of each distribution as according to index of biggest fit with special tests, and determination of parameter, MTTF, MTTR with Maximum Likelihood Estimator.Determination of replacement international pursuant to method of minimize downtime with model of age replacement yield replacement schedule as : centrifugal compressor machine ( Inter Stage Cooler equal to 1290 hour/clock, Oil cooler Lube equal to 524 hour/clock, Re Alignment Coupling equal to 1310 hour/clock, Lube oil Filter equal to 616 hour/clock, Filter Suction equal to 861 hour/clock), machine of compressor Reciprocating ( Ring Piston equal to 1313 hour/clock, Wiper Packing Unit of 1314 hour/clock, Cooler equal to 796 hour/clock, Valve 1st & 2st stage equal to 1350 hour/clock) , and machine of compressor Diaphragm ( Diaphragm Ist & 2st equal to 1266 hour/clock , Oil Pump Lube equal to 1292 hour/clock, V-Belt equal to 1301 hour/clock, Valve 1st & 2st stage equal to 1273 hour/clock). While determination of inspection international per month pursuant to method of minimize downtime, that is : centrifugal compressor machine ( Inter Stage Cooler 2 times; Oil cooler Lube 2 times; Re Alignment Coupling 2 times; Lube oil Filter 2 times; Filter Suction 2 times), machine of compressor Reciprocating ( Ring Piston 2 times; Wiper Packing Unit 2 times; Cooler 2 times; Valve 1st & 2st stage 1 times), and machine of compressor Diaphragm ( Diaphragm 1st & 2st 2 times, Oil Pump Lube 2 times; V-Belt 2 times; Valve 1st & 2st stage Itimes).