EPR核电机组部分冷却试验研究与风险识别

部分冷却试验作为欧洲先进压水堆(EPR)核电机组的首堆试验,试验过程中将造成压水堆一、二回路巨大的热冲击,核电厂全寿期内允许次数为15次。为减少重大瞬态试验的风险,本文对部分冷却试验的控制逻辑、试验原理及可行性进行深入研究,总结提炼出5大风险点。并通过模拟仿真对部分冷却试验进行分析,优化试验方案,最终试验一次成功满足核安全要求。

Research and Risk Analysis of Partial Cooldown Test of EPR Nuclear Power Plant

As the first reactor test of the European Pressurized Water Reactor (EPR) Units, partial cooldown test would cause enormous thermal shocks in the primary and secondary coolant circuits, which are not allowed to happen more than 15 times during the service life of a nuclear power station. In order to lower the risks in the test, studies are furthered on the control logic, theory, principles and the feasibility of the test, and the risks are summarized in 5 aspects. Meanwhile, comprehensive analysis? is performed on partial cooldown test by simulations, and then the test method is optimized.The test succeeds at one time, and meets the nuclear safety requirements.