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Development of OLM Configuration Risk Management Actions for Potential Use by Japanese Utilities

机译:开发日本公用事业可能使用的OLM配置风险管理措施

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In Japan, an overarching objective of nuclear power plant (NPP) operators is to achieve enhanced operational performance. One significant component of meeting this objective is to initiate the performance of on-line maintenance (OLM) throughout the fleet of commercial NPPs in Japan. Because Japanese NPPs currently do not perform voluntary maintenance activities that remove plant safety systems from service, the development, approval and implementation of this strategy is a complex evolution requiring the participation of the nuclear operating companies and the Japanese regulatory authority. Implementing a strategy that will safely and effectively permit the conduct of OLM requires a comprehensive and coordinated effort among all Japanese NPP operators. To achieve this objective, the Japanese Federation of Electric Power Companies formed a task force that consists of members from each nuclear operating company in Japan to develop the requirements for performing OLM. In this paper, we describe the development of a process to evaluate and manage configuration risk during the conduct of OLM at Japanese NPPs. The proposed approach was initially modeled based on the approach utilized by many NPP operators in the United States. However, there are numerous significant cultural and regulatory differences between Japan and the US (for example, there is no regulation in Japan comparable to the Maintenance Rule). As a result, the initial requirements have evolved to address the unique circumstances associated with application of OLM within the Japanese context. In this paper we describe the approach and requirements for OLM configuration risk management that have been developed for application in Japan.
机译:在日本,核电厂(NPP)运营商的首要目标是提高运营绩效。达到此目标的一个重要组成部分是启动整个日本商用NPP机队的在线维护(OLM)性能。由于日本国家核电厂目前不执行自愿维护活动,从而停止使用工厂安全系统,因此该策略的制定,批准和实施是一个复杂的过程,需要核运营公司和日本监管机构的参与。实施将安全有效地允许执行OLM的策略,需要所有日本NPP运营商进行全面而协调的努力。为了实现这一目标,日本电力公司联合会成立了一个由日本各核运营公司的成员组成的工作组,以制定执行OLM的要求。在本文中,我们描述了在日本NPP进行OLM期间评估和管理配置风险的过程的开发。最初基于美国许多NPP运营商使用的方法对提议的方法进行了建模。但是,日本和美国之间在文化和法规上存在许多重大差异(例如,日本没有可与《维持规则》相提并论的法规)。结果,最初的要求已经演变为解决与在日本范围内应用OLM相关的独特情况。在本文中,我们描述了已开发用于日本的OLM配置风险管理的方法和要求。

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