老龄平台定量风险评价
Quantitative Risk Assessment of Ageing Platforms
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- DOI:
- 作者:
- 陈团海1,2, 陈国明2, 张超1, 彭延建1
CHEN Tuan-hai1,2, CHEN Guo-ming2, ZHANG Chao1
- 作者单位:
- 1.中海石油气电集团有限责任公司 北京 100007;
2.中国石油大学海洋油气装备与安全技术研究中心 山东青岛 266580
CNOOC Gas and Power Group
- 关键词:
- 老龄平台;定量风险评价;事故树分析;ALARP原则;重要度分析
ageing platform;quantitative risk assessment;fault tree analysis;ALARP principle;criticality analysis
- 摘要:
- 针对目前大量海洋平台进入老龄期的现状,文章结合胜利油田海洋采油厂埕岛A平台进行定量风险评价,并进行重要度分析。研究基于事故树的老龄平台定量风险评价方法,分析平台失效原因;采用ANSYS软件中可靠性设计模块计算基本事件中静强度和疲劳强度失效事件的发生概率;根据平台上人员工作时间及逃亡概率计算失效后果,并依据它定量计算平台风险;采用ALARP准则进行风险评价;根据失效事故树与发生概率对10个基本事件结构重要度、概率重要度和关键重要度进行分析。研究表明,埕岛A平台个人风险处于最低合理可行的ALARP区域;极限荷载作用对老龄平台失效的影响最大,但其本身发生的概率不大,而平台构件名义应力失效、管节点冲剪失效以及构件疲劳失效不但对平台失效概率敏感性高,而且本身发生的概率也较大。
Quantitative risk assessment based on fault tree analysis and criticality analysis for ageing Chengdao A offshore platform in Shengli Oilfield are conducted. The reliability design module of ANSYS software is used to compute the occurrence probabilities of static strength and fatigue strength failures in basic events; the failure effect is computed according to work time and escape probability of personnel on the platform and it is used to compute quantitatively the platform risk; the risk assessment is performed by adopting ALARP principle; the structure criticality, probability criticality and key criticality of 10 basic events are analyzed in basis of fault tree and occurrence probability. The research results show that the individual risk of Chengdao A offshore platform is within the minimum reasonable and reliable ALARP range; the maximum effect on the ageing platform failure is limit load, but this failure occurrence has low probability; the effects of nominal stress failure of platform structural components, punching shear failure of pipe nodes and structural component failure on platform failure probability have high sensitivity, and these failure occurrence probabilities are bigger.2013,6(6): 12-17 收稿日期:2013-6-17DOI:10.3969/j.issn.l001-2206.2013.06.003基金项目:国家自然科学基金项目:超强台风下大型导管架平台动力灾变模拟及损伤控制(No.51079159)作者简介:陈团海(1984-),男,江西南昌人,工程师,2011年毕业于中国石油大学(华东),博士,主要从事石油天然气装备设计与分析方面的研究。参考文献:
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