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A systematic framework to investigate the coverage of abnormal operating procedures in nuclear power plants

机译：一个系统框架来调查核电厂异常运行程序的覆盖范围

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摘要

It is evident that the reliability of complex socio-technical systems, such as NPPs (nuclear power plants), is very critical for public safety. For this reason, the DID (defense-in-depth) concept has been adopted as a core principle to ensure the operational safety of NPPs. Regarding this, the provisioning of AOPs (abnormal operating procedures) is essential for implementing the DID concept. Unfortunately, since most AOPs were developed based on operational experience, it is not easy to investigate their coverage in a systematic manner. Therefore, in this study, a framework to identify the coverage of AOPs is proposed based on a SPV (single point vulnerability) model. As for the initial validation of the suggested framework, the coverage of OPR1000 (optimized power reactor 1000 MINe) units operating in the Rep. of Korea is analyzed. As a result, it is revealed that their coverage is about 63%. In addition, it is confirmed that one of the component failures distinguished from the proposed framework actually triggered an unexpected reactor trip event in an OPR1000 unit. Therefore, it is possible to expect that the proposed framework can be used as a practical tool to enhance the coverage of AOPs. (C) 2015 Elsevier Ltd. All rights reserved.
机译：显然，复杂的社会技术系统（例如NPP（核电厂））的可靠性对于公共安全至关重要。因此，已采用DID（纵深防御）概念作为确保核电厂运行安全的核心原则。对此，提供AOP（异常操作程序）对于实施DID概念至关重要。不幸的是，由于大多数AOP是根据操作经验开发的，因此以系统的方式调查其覆盖范围并不容易。因此，在本研究中，提出了一种基于SPV（单点漏洞）模型的AOP覆盖范围识别框架。对于建议框架的初步验证，分析了韩国运营的OPR1000（优化的反应堆1000 MINe）装置的覆盖范围。结果表明它们的覆盖率约为63％。此外，可以确定的是，与提出的框架不同的组件故障之一实际上触发了OPR1000装置发生意外的反应堆跳闸事件。因此，可以期望所提出的框架可以用作增加AOP覆盖率的实用工具。 （C）2015 Elsevier Ltd.保留所有权利。

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