核临界安全.假设临界事故的分析

[中文适用范围]： 本国际标准规定了分析潜在临界事故时需要研究的重要领域。 注 1：重要的是，每次临界事故被认为是可信的时，由于临界意外事件（双重配料、程序违规等）或由于安全规定失效（中子吸收剂的有效性降低了火灾等）。 注2：重要的是，临界安全专家要注意，本国际标准中制定的评估过程并不涉及不可预见的情况，因为任何实际发生的临界事故都可能是由于未预见到的情况或不遵守现行法规而导致的。 。 本国际标准不涉及公共当局负责的详细管理措施，也不涉及用于证明核设施事故临界性分析合理性的标准。 本国际标准不适用于核电厂。 [外文原描述]： ISO 27467:2008 specifies areas that it is important to study when analyzing potential criticality accidents. It is important that a criticality accident analysis be performed each time a criticality accident is considered credible, due either to criticality contingencies (double batching, procedural violations, etc.) or to the failure of safety provisions (effectiveness of neutron absorber reduced by fire, etc.). It is important that the criticality safety specialist be mindful that the process of evaluation developed in ISO 27467:2008 does not cater to the unforeseen, since any actually occurring criticality accident will probably result from a scenario not envisioned or from failure to comply with prevailing regulations. ISO 27467:2008 does not address detailed administrative measures, for which the responsibility lies with the public authorities, nor does it deal with criteria used to justify the accident criticality analysis of a nuclear facility. ISO 27467:2008 does not apply to nuclear power plants.