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Introduction: Hydrocarbons are flammable materials can cause major accidents and explosions at offshore platform hydrocarbon processing. Fires and explosions on offshore platforms are relatively rare accidents but can have unforeseen consequences that can have a significant impact on fatality and loss of assets. Methods: Descriptive method with quantitative design from secondary data in 2020 (cross sectional) and literature study without intervention on the research object (non-experimental) using software (PHAST) to evaluate the consequences of fire and explosion models. Frequency analysis with fault tree and event tree analysis methods, to analyse the possibility of overpressure and major accidents events on offshore platforms hydrocarbon processing facilities which are Major Hazard Plants. Result: The highest risk level for the personnel fatality working on the offshore platform is in the ALARP Region level from the largest contributor to the flash fire scenario with the number of fatalities as many as 10 peoples and the frequency value of 3.26E-08/year means 1 out of 30,674,847 flash fire scenario opportunities in 1 year can occur to cause fatality of 10 people, while the risk to assets is in an acceptable risk level from the largest contributor to the jet fire scenario with loss of assets 40,590,800.00 and the highest frequency value is 6.31E-08/year) means that 1 in 15,847,861 opportunities of a jet fire scenario in 1 year can occur to cause asset loss of $ 40,590,800 from fires and explosions in overpressure scenarios that have the potential to occur on the new offshore platform taking into account some of the safety systems that have been defined in the design. Conclusion: There is no need for additional mitigation because the safety system that has been determined in the design is sufficient to prevent major accidents that can occur so that the new offshore platform is declared safe to operate.
ABSTRAK
Spherical tank yang berisi Butana merupakan subjek berpotensi hazard (kebocoran, kebakaran dan ledakan) yang dapat memberikan konsekuensi terhadap fasilitas dan manusia sebagai obyek penerima yang berada pada radius pajanan. Penelitian ini menggunakan pemodelan dengan input data primer dan sekunder yang diaplikasikan dalam perangkat lunak ALOHA, Area Locations of Hazardous Atmosphere. Hasil penelitian terhadap skenario kejadian kebocoran, kebakaran dan ledakan di fasilitas pengolahan minyak dan Gas PT Z mendapatkan nilai konsukeuensi zona bahaya sampai radius satu kilometer. Zona aman setelah radius satu kilometer.
ABSTRACT
Spherical tanks containing Butane is subject of potentially hazard (leak, fire and explosion) which can bring facility and human consequences as the recipient objects which are in the radius of exposure. This research uses input modeling with primary and secondary data which applied in the Area Locations of Hazardous Atmosphere (ALOHA) software. The study of the leak, fire and explosion incidence scenario at oil and gas processing facilities of PT Z scores shows threat zone to a radius of one kilometer. Safety zone distance after radius kilometer.
Kata kunci : Analisis Konsekuensi, Threat Zone, SPPBE, Dispersi Gas, kebakaran, ledakan, Jet Fire, BLEVE, Vapour Cloud Explosion
This study is about consequence analysis of gas dispersion, fire, andexplosion of LPG storage tank in SPPBE PT Aroma Jaya Sejati Sragen. Thisstudy is semi quantitave study using secondary data and field observation then analyze them with ALOHA software. The purpose of this study is to find out theconsequences impact range of gas dispersion, fire and explosion due to leakage ofLPG storage tank which divided into propane and butane gas.The result of this study is threat zone from gas dispersion, jet fire, BLEVE,and Vapour Cloud Explosion modelling. The result can show the heat radiationand explosion pressure and safe distance of SPPBE PT Aroma Jaya Sejati Sragen.
Keywords : Consequence Analysis, Threat Zone, SPPBE, Gas Dispersion, fire,explosion, Jet Fire, BLEVE, Vapour Cloud Explosion
This study is about consequence analysis of gas dispersion, fire, and explosion of LPG spherical storage tank C – 20 – 01 – A at PT Pertamina (Persero) RU V Balikpapan. This study is a quantitative study using ALOHA software to analyze the primary and secondary data. This study aims to estimate the range and consequences of gas dispersion, fire, and explosion due to leakage at LPG spherical storage tank C – 20 – 01 – A which is divided to propane and butane.
This study is about consequence analysis of gas dispersion, fire, and explosionon LPG storage tank at SPPBE PT Adikarya Pramita Perdana, Depok. This study is aquantitative modeling with collecting secondary data and field observations thatanalyzed using ALOHA (Areal Location of Hazardous Atmosphere) software. Thepurpose of this study is to find out the consequences impact range of gas dispersion,fire and explosion due to leakage of LPG storage tank which divided into propaneand butane gas, also the description of fire safety system and emergency managementat SPPBE PT Adikarya Pramita Perdana.The results of this study is the range and consequences of modeling toxic gasdispersion due to leakage of LPG storage tank at SPPBE PT Adikarya PramitaPerdana, spreading range distance up to 401 meters. In jet fire model the range up to159 meters, while in BLEVE up to 1 kilometer, and VCE model up to 330 meters.The dangerous location or area due to this leakage at SPPBE PT Adikarya PramitaPerdana and the populations which is at risk reaches Sukamaju, Jatijajar, andCilodong. The installation of fire safety equipment at SPPBE PT Adikarya PramitaPerdana is already proper and meets the standard of PT Pertamina (Persero) and alsohas guidelines for emergency response management system for handling multiplecases of emergencies.Keywords: Consequence analysis, LPG, Storage Tank, SPPBE, ALOHA, Toxic gasdispersion, Fire, Jet fire, BLEVE, Explosion, Vapor cloud explosion, Firesafety, Emergency management
Fire accident of crude oil tank is one of major accident event resulting in fatality. A large scale of flammable crude oil tanks is operated by Company Z. This research is a quantitative risk assessment of fire accident on crude oil tank where the risk is defined by measurement of frequency and consequence. Event frequency is calculated based on event tree analysis result of fire accident on tank storage. The fire consequence and its impact to personnel working in control room is measured by using ALOHA software. A flammable crude oil is stored in a fixed cone roof tank located 70 meter from the control room. Major accident events which potentially occur in the facility are pool fire and vapor cloud explosion. Pool fire has significant impact to personnel working in control room based on consequence modelling. Both individual risk and societal risk are assessed based on possible failure scenarios. The risk assessment result of pool fire consequence to personnel within the facility is still within tolerable limit. A consistent implementation of risk control include process safety management should be maintained to ensure risk is always within tolerable risk
