Gas dispersion risk analysis of safety gap effect on the innovating FLNG vessel with a cylindrical platform |
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| Institution: | 1. School of Civil and Resource Engineering, The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia;2. GexCon Australia, 8/64 Fitzgerald Street, Northbridge WA 6003, Australia;1. Gexcon US, Bethesda, MD, USA;2. SRI International, Menlo Park, CA, USA;1. Center for Offshore Engineering and Safety Technology, China University of Petroleum, Qingdao 266580, China;2. Tianjin University-Curtin University Joint Research Centre of Structure Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, WA 6102, Australia;1. GexCon AS, Bergen, Norway;2. Samsung Heavy Industries, Seongnam, South Korea;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. Centre for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent St, Bentley WA 6102, Australia;2. Department of Civil Engineering, University of Chile, Blanco Encalada 2002, Santiago, Chile;3. State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing, Jiangsu 210007, China |
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| Abstract: | While the effect of the safety gap on explosions is well known, little has been carried out to evaluate the effect of the safety gap on dispersion of gas releases, this paper evaluates the effect of safety gap on gas dispersion for a cylindrical Floating Liquefied Natural Gas (FLNG) vessel. The realistic ship-shaped and circular FLNG platforms are established and used for the detailed CFD based analysis; rather than the structural and hydrodynamics advantages of mobility, stability and cost efficiency etc., this study aims to investigate the safety of gas dispersion on the cylindrical FLNG and compare the safety gap effects on different configurations. A series of different safety gap configurations are evaluated for gas dispersion occurring in near field for the traditional FLNG while both near field and far field gas dispersion simulations are conducted on the cylindrical one. The overall results indicate that the safety gap is effective in reducing the gas cloud size in both FLNG configurations, however, when it comes to the gas dispersion in the far field against the leakage point, the safety gap increases the gas cloud size in the cylindrical FLNG vessel on the contrary. |
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| Keywords: | Gas dispersion Safety gap CFD Cylindrical FLNG Circular platform |
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