Quantitative risk analysis of fire and explosion on the top-side LNG-liquefaction process of LNG-FPSO |
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| Institution: | 1. School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;2. Department of Chemical Engineering, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido 449-728, Republic of Korea;3. Automation and Systems Research Institute, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea;4. Department of Safety Engineering, Pukyong National University, 100 Yongdang-dong, Nam-gu, Busan 608-739, Republic of Korea;1. Division of Ocean System Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea;2. Hyundai Heavy Industries Co. Ltd., 17-10, Mabuk-ro 240beon-gil, Giheung-gu, Yongin-si, Gyeonggi-do 446-912, Republic of Korea;1. Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;2. Engineering School, Sun Yat-Sen University, Guangzhou 510006, China;1. SINTEF Technology and Society, Safety Research, Postboks 4760 Sluppen, 7465 Trondheim, Norway;2. Alma Mater Studiorum – Università di Bologna, DICAM – Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali, via Terracini 28, 40131 Bologna, Italy;1. Dicle University, Faculty of Medicine, Department of Emergency Medicine, Diyarbakır, Turkey;2. Dicle University, Faculty of Medicine, Department of Plastic and Reconstructive Surgery, Diyarbakır, Turkey;3. Diyarbakır Training and Research Hospital, Emergency Medicine Department, Diyarbakır, Turkey;1. School of Civil, Environmental and Mining Engineering, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;2. Beijing University of Technology and The University of Western Australia Joint Research Center for Sustainable Infrastructure, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China;3. Centre for Infrastructural Monitoring and Protection, Kent Street, Bentley, WA 6102, Australia |
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| Abstract: | Since the massive use and production of fuel oil and natural gas, the excavating locations of buried energy-carrying material are moving further away from onshore, eventually requiring floating production systems like floating production, storage and offloading (FPSO). Among those platforms, LNG-FPSO will play a leading role to satisfy the global demands for the natural gas in near future; the LNG-FPSO system is designed to deal with all the LNG processing activities, near the gas field. However, even a single disaster on an offshore plant would put the whole business into danger. In this research, the risk of fire and explosion in the LNG-FPSO is assessed by quantitative risk analysis, including frequency and consequence analyses, focusing on the LNG liquefaction process (DMR cycle). The consequence analysis is modeled by using a popular analysis tool PHAST. To assess the risk of this system, 5 release model scenarios are set for the LNG and refrigerant leakages from valves, selected as the most probable scenarios causing fire and explosion. From the results, it is found that the introduction of additional protection methods to reduce the effect of fire and explosion under ALARP criteria is not required, and two cases of the selection of independent protection layers are recommended to meet the SIL level of failure rate for safer design and operation in the offshore environment. |
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| Keywords: | LNG-FPSO Quantitative risk analysis Safety integrity level Fire and explosion LNG-Liquefaction system PHAST |
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