Penilaian Risiko Sosial Pada Lpg Production Plant

Putra, Dedy Wanda (2019) Penilaian Risiko Sosial Pada Lpg Production Plant. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Liquefied Petroleum Gas (LPG) adalah bahan bakar gas yang terdiri dari unsur propana dan butana. Proses produksi LPG dari minyak mentah atau gas alam menjadi produk LPG disebut LPG production plant. Banyaknya kasus kebakaran akibat kebocoran LPG. Pada proses produksi LPG memiliki potensi kebakaran dan ledakan karena LPG bersifat flammable, reactive dan mudah menguap. Dari potensi bahaya tersebut dapat menimbulkan kecelakaan kerja maka perlu dilakukan penilaian risiko agar tindakan pencegahan dapat dipersiapkan. Tahap-tahap melakukan penilaian risiko adalah identifikasi bahaya, analisa risiko, analisa konsekuensi, representasi risiko dan mitigasi. Identifikasi bahaya menggunakan Hazard and Operability (HAZOP) BS IEC 61882:2001 dari P&ID LPG production plant yang telah dibagi berdasarkan node. Dengan skenario kebocoran 1-3 mm, 3-10 mm, 10-50 mm, 50-150 mm dan lebih dari 150 mm. Selanjutnya menganalisa frekuensi dengan menggunakan Fault Tree Analysis (FTA) dan Event Tree Analysis (ETA). Nilai-nilai kegagalan dalam setiap komponen didapatkan dari DNV Failure Frequency Guidance dan International Association of Oil and Gas Producers (OGP). Dalam melakukan analisa frekuensi menggunakan software RELEX 2009. Initial event dari penilaian risiko ini yaitu gas release. Nilai frekuensi kegagalan terbesar dengan perhitungan FTA yaitu sebesar 1,168E-02 sedangkan dengan perhitungan ETA yaitu sebesar 4,97E-03 untuk konsekuensi jet fire, 6,14E-03 untuk konsekuensi flash fire dan 1,17E-02 untuk konsekuensi gas dispersion. Untuk selanjutnya dilakukan analisa konsekuensi untuk mengetahui berapa orang yang terdampak pada potensi bahaya tersebut menggunakan perangkat lunak Fire Modelling. Hasil konsekuensi jet fire berupa radius intensitas panas dalam fatality level 4 kW/m2, 12,5 kW/m2 dan 37,5 kW/m2. Untuk representasi risikonya menggunakan F-N Curve mengikuti standar Hongkong Government Risk Guidelines (HKRG). Apabila risiko tidak dapat diterima maka dilakukan mitigasi dengan Layer of Protection Analysis (LOPA) seperti konsekuensi jet fire nilai frekuensinya sebesar 4,97E-03 yang berada pada zona unacceptable dengan cara menambah Independent protection layer (IPL) seperti gas detector dan CO2 system maka nilai frekuensi menjadi 9,93E-06 berapa pada zona As Low As Reasonably Practicable Risk (ALARP).
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Liquefied Petroleum Gas (LPG) is a gas fuel consisting of propane and butane elements. The process of producing LPG from crude oil or natural gas into LPG products is called LPG production plant. Many cases of fire due to LPG leakage. In the process of LPG production it has the potential for fire and explosion because LPG is flammable, reactive and volatile. From the potential hazards that can cause work accidents, it is necessary to carry out a risk assessment so that preventive measures can be prepared. The stages of conducting a risk assessment are hazard identification, risk analysis, consequence analysis, risk representation and mitigation. In this research, Hazard identification using Hazard and Operability (HAZOP) BS IEC 61882: 2001 from P & ID of LPG production plant which has been divided based on nodes. With leakage scenarios of 1-3 mm, 3-10 mm, 10-50 mm, 50-150 mm and more than 150 mm. The frequency analysis is done by using Fault Tree Analysis (FTA) and Event Tree Analysis (ETA). Failure values in each component are obtained from DNV Failure Frequency Guidance and International Association of Oil and Gas Producers (OGP). Frequency analysis is conducted by using RELEX 2009 software. The initial event of this risk assessment is gas release. The biggest frequency of failure based on FTA calculation is 1.168E-02, while ETA calculation are jet fire, flash fire, gas dispersion are 4.97E-03, 6.14E-03, 1.17E-02 respecticaly. The purpose of consequence analysis is to find out how many people are affected by the potential danger using fire modeling software. The result of the consequences of the jet fire is a heat intensity radius in fatality level of 4 kW/m2, 12.5 kW/m2 and 37.5 kW/m2. For the risk representation using F-N Curve follows the standard Hong Kong Government Risk Guidelines (HKRG). If the risk is unacceptable, mitigation is carried out with Layer of Protection Analysis (LOPA) such as the consequences of jet fire. The frequency value is 4.97E-03 in the unacceptable zone by adding an Independent protection layer (IPL) such as a gas detector and CO2 system. After mitigation the frequency becomes 9.93E-06 in the As Low As Reasonably Practicable Risk (ALARP) zone.

Item Type:	Thesis (Undergraduate)
Additional Information:	RSSP 658.155 Put p-1 2019
Uncontrolled Keywords:	LPG, HAZOP, FTA, ETA, Fire Modelling, F-N Curve, LOPA
Subjects:	H Social Sciences > HD Industries. Land use. Labor > HD61 Risk Management V Naval Science > VK
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Dedy Wanda Putra
Date Deposited:	06 Dec 2021 08:15
Last Modified:	06 Dec 2021 08:15
URI:	http://repository.its.ac.id/id/eprint/61647

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