船舶采用LNG加注与装卸货同步作业风险评估研究

Risk Assessment of Ship Conducting Simultaneous Operations with Cargo Loading/Unloading during LNG Bunkering

为了有效评估沿海港口船舶采用LNG加注与装卸货同步作业的潜在风险和相应缓解措施,本文选定上海洋山港二期码头为作业地点,以一艘20 000m3LNG加注船为14 800TEU双燃料集装箱船实施LNG加注并同时进行装卸货作业为研究对象,基于国内外广泛认可的风险评估方法进行危险源辨识和失效概率分析,拟定了4个LNG泄漏场景,采用三维计算流体力学软件FLACS分析了LNG泄漏后的可燃气体对两船的波及范围,同时考虑到集装箱装卸货对LNG加注船及作业的影响,提出了LNG加注与装卸货同步作业的限制区域、警戒区域及安全保障措施建议。

In order to effectively evaluate the potential risks and corresponding mitigation measures of simultaneous LNG bunkering and loading and unloading operations for coastal port ships,this article selects the second phase terminal of Shanghai Yangshan Port as the operating site,and takes a 14800TEU dual fuel container ship using a 20000m3 LNG bunker vessel to perform LNG bunkering and loading and unloading operations as the research object.Based on the widely recognized risk assessment method at home and abroad,four LNG leakage scenarios were proposed based on hazard identification and failure probability analysis.The three-dimensional computational fluid dynamics software FLACS was used to analyze the dispersion range of flammable gas after LNG leakage to the two ships.At the same time,considering the impact of container loading and unloading on LNG bunker vessel and operations,suggestions on the restriction area,warning area and safety guarantee measures for the simultaneous LNG bunkering and cargo loading operation are put forward.