安全相关涂层管理策略研究

Research on Management Strategy of Safety Related Coatings

本文介绍国内主要商用核电堆型电厂反应堆厂房涂层的安全相关属性和管理策略,简述地坑过滤器堵塞风险的研究现状,指出当前所公开的管理导则忽略了安全壳内涂层劣化,可能在基准事故工况下生成大量碎片,提高地坑过滤器的堵塞风险。并且提出了安全壳内涂层的管理策略以控制地坑过滤器堵塞风险为目的,通过涂层在基准事故工况下的生成碎片与传输能力,以及滤网堵塞的临界碎片量,量化状态评估办法。根据碎片量逼近关系和碎片传输关系,决定维修时机和维修优先级。

This paper introduces Safety related attributes and management strategy of coatings in containment for domestic commercial nuclear power plants,Biefly describes the research status of the risk of filter clogging.Points out that the public guides current for the management has ignored the degradation of coatings in containment,probably a large number of pieces would be generated under benchmark accident conditions,increasing the risk of pit filter clogging.For the purpose of controlling the risk of pit filter clogging,the management strategy of coatings in containment establishes a quantifiable state evaluation method through the capacity of debris generation and transmission in benchmark accident conditions,and the critical amount of debris of screen blocking.The maintenance time and maintenance priority would be decided according to the approximation of debris amount and debris transmission.