Analisis HAZOP dan Penentuan Safety Integrity Level mengunakan Metode Fault Tree Analysis pada Ammonia Refrigeration Pabrik Amoniak Unit I PT. Petrokimia Gresik

Hilmi, Akhmad Firdaus (2018) Analisis HAZOP dan Penentuan Safety Integrity Level mengunakan Metode Fault Tree Analysis pada Ammonia Refrigeration Pabrik Amoniak Unit I PT. Petrokimia Gresik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada pabrik amoniak Petrokimia Gresik terdapat proses yang disebut sistem pendinginan amonia 120-CF yang digunakan untuk menjaga suhu produk amonia pada kondisi yang diinginkan sehingga fase produk akhir adalah cair dan dapat didistribusikan ke pabrik lain yang membutuhkan cairan amonia. Proses dimulai dengan meningkatkan tekanan uap amonia yang berasal dari flash drum pendingin 120 CF yang dilengkapi dengan kompresor pendinginan amonia 105-J dan menjaga amonia cair pada tangki sehingga suhu produk tetap pada -33 ° C dan 0,05 kg / tekanan cm2. Untuk meminimalkan risiko pada plant, identifikasi potensi bahaya yang mungkin terjadi di empat node flash drum 120 CF 1, 120 CF 2, 120 CF3 dan 120 CF 4 dilakukan dengan menggunakan Hazard and Operability Analysis (HAZOP) dan Analisis SIL dengan metode FTA. Berdasarkan identifikasi 20 komponen BPCS, 7 komponen memiliki kategori extreme risk. Nilai SIL yang didapat dari perhitungan BPCS PFD adalah SIL 1 dengan Probability Failure Demand (PFD) senilai 0,082. Setelah mengkonfigurasi elemen akhir BPCS dengan menambahkan valve redundan dan SIS ESDV, PFD sistem diturunkan menjadi 0,003202 dan secara signifikan meningkatkan SIL senilai SIL 2=================================================================================================At the Petrochemical Gresik ammonia plant there is a process called the 120-CF ammonia refrigeration system used to maintain the temperature of the ammonia product under desired conditions so that the final product phase is liquid and may be distributed to other plants requiring ammonia fluid. The process is initiated by increasing the ammonia vapor pressure derived from a 120 CF cooling drum flash equipped with a 105-J ammonia cooling compressor and maintaining liquid ammonia in the tank so that the product temperature remains at -33 ° C and 0.05 kg / cm2 pressure. To minimize risks to the plant, identify potential hazards in the four 120 CF 1, 120 CF 2, 120 CF3 and 120 CF 4 drum nodes performed using Hazard and Operability Analysis (HAZOP) and SIL Analysis with the FTA method. Based on identification on 20 BPCS components, 7 components have extreme risk category. SIL value obtained from the calculation of BPCS PFD is SIL 1 with Probability Failure Demand (PFD) valued at 0.082. After configuring the final elements of BPCS by adding redundant valves and SIS emergency shutdown valves, the system PFD is lowered to 0.003202 and significantly increases SIL's worth of SIL 2

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Ammonia Refrigeration, Hazard and Operability Study ,SIS, SIL, failure rate , PFD
Subjects: T Technology > T Technology (General) > T55 Industrial Safety
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7870.23 Reliability. Failures
T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions: Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Akhmad Firdaus Hilmi
Date Deposited: 12 Jul 2021 22:42
Last Modified: 12 Jul 2021 22:42
URI: https://repository.its.ac.id/id/eprint/55243

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