Characteristic analysis on leakage-burning coupling of LNG tanker

doi:10.16265/j.cnki.issn1003-3033.2020.01.013

China Safety Science Journal ›› 2020, Vol. 30 ›› Issue (1): 81-86.doi: 10.16265/j.cnki.issn1003-3033.2020.01.013

• Safety engineering technology • Previous Articles Next Articles

Characteristic analysis on leakage-burning coupling of LNG tanker

XIANG Li¹, XIE Qiyuan¹, ZHANG Jie², LU Qizhao¹, ZHOU Feng²

1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei Anhui 230027, China;
2. Shanghai Fire Research Institute of Ministry of Emergency Management, Shanghai 200032, China

Received:2019-10-21 Revised:2019-12-02 Online:2020-01-28 Published:2021-01-22

Abstract

Abstract: In order to analyze evolution of accident chain of "leakage-burning-heat feedback-temperature/pressure increase-stronger leakage", which is triggered by ignition of fuel leaked from LNG tanker, a coupling model of leakage-burning was developed based on typical situation in China. And effects of leakage phase, filling ratio and aperture on leakage accident development were analyzed. The results show that pressure in tanker might increase sharply and explode caused by positive feedback between leakage rate and burning heat flow at the leakage stage of liquid. It would be more dangerous in early leakage stage for low filling ratios while peak pressure would be higher for high filling ratios. The peak pressure of tanks normally decreases along with increase of aperture within certain range and at certain filling ratios.

Key words: liquefied natural gas (LNG), tanker, leakage-burning coupling, theoretical analysis, overpressure and explosion

CLC Number:

X932

XIANG Li, XIE Qiyuan, ZHANG Jie, LU Qizhao, ZHOU Feng. Characteristic analysis on leakage-burning coupling of LNG tanker[J]. China Safety Science Journal, 2020, 30(1): 81-86.

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Characteristic analysis on leakage-burning coupling of LNG tanker

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