应用API581对输气站场进行定量风险评价

QUANTITATIVE RISK ASSESSMENT ON GAS TRANSMISSION STATION WITH API 581

目前专门针对输气站场的风险评价方法还不多,现有的手段也只是根据国家法律法规得出定性的评价结果,然后按照评价结果对照得出整改方案。为此,对输气站场的定量风险评价工作提出了一套新方法,得到了定量的和更加客观的风险排序,为管道站场的完整性管理工作提供了有力的支持;并以陕京输气管道榆林压气站为例,应用美国石油学会标准API581(基于风险检测的基本源文件)对站内设施进行了风险评价,计算了站内设备和管线的失效后果、失效概率,得到了定量风险值,进而分析了风险值产生差异的原因。最后,针对我国输气管道风险评估工作提出了看法和建议。

Currently, risk assessment method specially designed for gas transmission station is shortfall. The existent method can only get qualitative result from related state laws and regulations, and then modify it to get revamped proposal. Therefore, a new method for quantitative risk assessment of gas transmission station was raised to acquire quantitative and objective hazard sequence, which will provide fully support to integrality management works of pipeline stations. Yulin gas compressor station on the Shaanxi-Beijing gas transmission pipeline is taken as an example to perform risk assessment on the facilities by using American Petroleum Institute Standard 581 (API Std. 581, risk-based inspection base resource document). The risk value can be acquired by calculating failure effect and ratio of the installments and pipelines in the station. Then further study has been carried out on the reasons why differences of hazard value incur. Finally, opinions and suggestions on risk assessment works of Chinese gas transmission pipelines are presented.