LNG接收站泄漏模式分析及控制

LEAKAGE MODE ANALYSIS AND CONTROL FOR LNG TERMINAL

为保障LNG接收站的安全运行,有效控制泄漏风险,通过泄漏检测及修复工作的开展,对天然气泄漏模式进行了分析。结果表明LNG接收站泄漏部位以法兰、引压管接头为主,占总泄漏部位的92.9%,在泄漏量上,占总泄漏量的98.1%。引压管管接头的泄漏原因以结构失效为主,占82.4%,法兰的泄漏原因以压紧力不足为主,占65.7%。最后根据泄漏修复经验,提出了防泄漏控制措施,为防泄漏工作提供了支持。

This paper makes an analysis on the natural gas leakage mode through carrying out leak detection and repair work in order to guarantee the safe operation of LNG terminal and control leak risks effectively. The results show that the main leakage parts are in the flange and pressure pipe coupling,accounting for 92. 9 % of the total leakage parts and 98. 1 %of the total amount of leakage. The main reason for pressure pipe coupling leakage is structural failure,accounting for 82. 4 %; while the main reason for flange leakage is the insufficient pressing force,accounting for 65. 7 %. Finally,based on the leakage repair experience,the paper puts forward the antileakage control measures which provide support for leakage prevention work.