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介绍了与应急计划有关的源项的背景材料,列出了几个国家在制定应急计划政策时所考虑事故源项,扼要地提出了最近严重事故及其源项研究的主要结果和可能对应急计划的影响。提出了我国在制定应急计划政策时考虑事故源项的原则和我国用源项建立应急计划区大小方法的意见,根据我国在建核电厂应急计划区大小的研究以及选用的源项和核电厂功率对应急计划区大小的影响的研究结果,说明提出的原则和意见在我国是否可行。研究结果表明,确定我国核电厂(压水堆型)的应急计划区大小时考虑设计基准事故(DBA)和概率安全评价(PSA)得出的事故谱,将它们的厂外预期剂量,与相宜的干预水平作比较,作为确定应急计划区大小的技术依据是适宜的,可行的。
The background information on source items related to contingency planning is presented, the source items for accidents considered in the formulation of contingency planning policies in several countries are listed, the main findings of recent serious accidents and their source studies and possible responses to emergencies Impact of the plan. Put forward the suggestion that our country should consider the source item of accident when formulating emergency plan policy and how to build the size of emergency plan area with source item in our country. According to the research on the size of emergency planning area under construction in our country, The research results on the impact of the size of emergency planning area indicate whether the proposed principles and opinions are feasible in our country. The results show that when determining the size of the contingency planning area of NPP in China, we consider the accident spectrum of DBA and PSA, As a technical basis for determining the size of emergency planning area is appropriate and feasible.