基于始发事件频率的工况划分是船用核动力安全设计的基础。船用核动力始发事件按频率的工况划分，目前主要参考压水堆核电厂，由于两者之间存在一些差异，此类工况划分不完全适用于船用核动力，主要表现在不同工况间的频率截断值和设计基准事故选取的频率截断值2个方面，对此本文调研了国内外标准要求、航海等领域的考虑。在此基础上，初步提出了基于船用核动力特点的工况划分和设计基准事故的频率截断值，为相关设计工作提供一定的参考。
The conditions classification based on initiating event frequency is the base for safety design of nuclear power plant. The conditions classification for marine reactor is according to nuclear power plant now, however, as the difference between them, this method is not pertinent for marine reactor, especially the frequency range and the cutoff frequency. The conditions classification in standard and in aviation and navigation field is reviewed in this paper, and basing on the literature review and the nature of conditions classification, the conditions classification for marine reactor is preliminary studied, the frequency range and cutoff frequency is also concluded, this will provide some reference for future study.
2020,42(3): 102-105 收稿日期：2018-12-16
DOI：10.3404/j.issn.1672-7649.2020.03.020
分类号：U664
作者简介：张丹(1984-),男,高级工程师,主要从事核动力核安全研究与设计工作。
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