Video: Experimental Investigation of LNG Underwater Release and Combustion Behavior on Water Surface
- Yixiang Zhang (China university of petroleum, East China) | Jianlu Zhu (China university of petroleum, East China) | Youmei Peng (China university of petroleum, East China) | Cunyong Song (China university of petroleum, East China) | Yuxing Li (China university of petroleum, East China)
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- Offshore Technology Conference
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- 2020. Copyright is retained by the author. This document is distributed by OTC with the permission of the author. Contact the author for permission to use material from this document.
- 7 Management and Information, 6.3 Safety, 2.1.3 Completion Equipment, 4.1 Processing Systems and Design, 7.2.1 Risk, Uncertainty and Risk Assessment, 4.1.9 Tanks and storage systems, 4.6 Natural Gas Conversion and Storage, 4 Facilities Design, Construction and Operation, 4.2 Pipelines, Flowlines and Risers, 7.2 Risk Management and Decision-Making, 4.6 Natural Gas, 4.6.2 Liquified Natural Gas (LNG)
- Mass loss rate, Crosswinds, Liquefied nature gas, Leakage underwater, Flame geometry
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This work foucs on the safety transportation and risk evaluation of LNG accidental release and vapor cloud flame. The experimental was conducted in water tank with dimension of 1×0.5×0.5 in height × long × width and placed in a wind tunnel. The LNG released from a storage tank which connected by a flexible insulation tube. A stainless steel pipeline placed through the plexiglass tank with three orifice sizes and 0.6 m water depth. The leakage pressure and volume flow rate was measured by a pressure gauge and liquid flow meter with online monitoring. The dynamic behavior of LNG jet release was recorded by a high speed camera from a full and micro view. The flammable vapor was immediately ignited on the water surface under different crosswinds. In addition, a new correlation of the radio between flame height to width with mass loss rate and wind speed has been proposed. The flame temperature was employed by an array of K-type thermalcaplous in vertical and horizontal directions. An infrared camera was used to compare the thermal distribution for quantitative.