东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (7): 1034-1038.DOI: 10.12068/j.issn.1005-3026.2019.07.022

• 资源与土木工程 • 上一篇    下一篇

氨制冷系统安全完整性等级的确定

李力, 许开立, 王犇, 姚锡文   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2018-05-31 修回日期:2018-05-31 出版日期:2019-07-15 发布日期:2019-07-16
  • 通讯作者: 李力
  • 作者简介:李力(1992-),男,山西大同人,东北大学博士研究生; 许开立(1965-),男,山东郓城人,东北大学教授,博士生导师.
  • 基金资助:
    国家重点研发计划项目(2017YFC0805100)

Determination of Safety Integrity Level of Ammonia Refrigeration System

LI Li, XU Kai-li, WANG Ben, YAO Xi-wen   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2018-05-31 Revised:2018-05-31 Online:2019-07-15 Published:2019-07-16
  • Contact: XU Kai-li
  • About author:-
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摘要: 在安全完整性等级的评价过程中定义了风险概率降低值Q○rpr,并给出了Q○rpr的计算公式.Q○rpr是用来表征风险概率降低的大小,其数值大小与系统安全完整性等级所要求的失效概率存在对应关系,进而可以确定系统的安全完整性等级.在经典的HAZOP-LOPA评价方法中融入Q○rpr的计算,可以更加准确、快速地评价系统的安全完整性等级.采用该方法对氨制冷系统进行安全完整性等级评价.分析了氨制冷系统可能发生的泄漏爆炸事故,并对其安全相关系统进行了安全完整性等级评价,验证了该方法的有效性和可行性.

关键词: 安全完整性等级, 风险概率降低值, HAZOP-LOPA, 氨制冷, 失效概率

Abstract: The risk probability reduction quotient(Q○rpr)is defined during the evaluation of the safety integrity level, and the formula of Q○rpr is given. Q○rpr is used to characterize the reduction in the risk probability. The value of the Q○rpr corresponds to the failure probability required by the system safety integrity level, and then can be used to determine the safety integrity level. Integrating the Q○rpr calculation into the classical HAZOP-LOPA evaluation method can more accurately and quickly evaluate the safety integrity level of the system. This method is used to evaluate the safety integrity level of the ammonia refrigeration system. The leakage and explosion accidents in the ammonia refrigeration system were analyzed, and the safety integrity level of the safety-related system was evaluated to verify the effectiveness and feasibility of the method.

Key words: SIL(safety integrity level), risk probability reduction, HAZOP-LOPA, ammonia refrigeration, failure probability

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