核电厂应急行动水平中“气载流出物异常”类EAL制定的探讨

目的 对制定核电厂应急初始条件和应急行动水平（ICs/EALs）中的"气载流出物异常"类应急行动水平的相关问题进行探讨。方法 针对制定核电厂气载流出物类应急行动水平中必须注意的关键问题逐一进行了分析、讨论。结果 分析表明，延迟释放时间、核素释放份额、导出EAL单位变换等问题均会影响“气载流出物异常”类应急行动水平的导出结果。结论 气载流出物异常类应急行动水平的优先级较低而不适合作为决策的唯一判据，但其作为体现EAL多样性的一种指标，能够反映某些潜在事件的征兆。

Discussion on the related issues in the EAL establishment of abnormal airborne radiological effluent of NPP

Objective This paper discusses the relevant issues of formulating the initial conditions of emergency response and the levels of emergency response (ICs/EALs) for nuclear power plants, such as the level of "abnormal airborne effluents".Methods Some problems involved in the formulation of emergency response level for airborne outflow materials were discussed.Results The analysis shows that the delayed release time, the share of nuclide release and the transformation of EAL units could affect the derivation of the emergency action level of "abnormal airborne effluents".Conclusion The priority of emergency action level of abnormal airborne effluents is low, which is not the only criterion for decision-making, but it is an indicator of EAL diversity and can reflect the symptoms of some potential events.