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国产先进压水堆相比于传统压水堆,系统设备与运行参数均有较大变化,对其开展事故分析研究非常必要。本文首先应用最佳估算系统分析程序TRACE对国产先进压水堆机组进行详细建模,之后根据机组安全分析报告中的分析假设,选取全失流事故进行瞬态分析研究,然后应用FLICA Ⅲ-F程序进行事故瞬态堆芯DNBR分析研究,最终得到的结果可以满足全失流事故验收准则最小DNBR限值1.19的要求。接下来以上研究基础上,选取更加保守的全失流事故分析假设,进一步开展事故分析研究,发现研究结果仍然满足全失流事故验收准则的要求,表明国产先进压水堆机组在全失流事故下安全可靠。
Domestic advanced PWR Compared with the traditional pressurized water reactor, system equipment and operating parameters have great changes, it is necessary to carry out accident analysis and research. In this paper, we first use the best estimation system analysis program TRACE to modeling the domestic advanced PWR unit. Then, based on the analysis assumptions in the unit safety analysis report, we select the total loss accident for transient analysis. Then, FLICA Ⅲ-F Program for transient core DNBR analysis of the accident, the resulting results can meet the acceptance criteria for all the minimum loss of leakage DNBR limit of 1.19 requirements. Based on the above research, we select the more conservative assumption of total loss analysis to further analyze the accident, and find that the research results still meet the acceptance criteria of total loss, which shows that the domestic advanced PWR unit is in full loss of accident Under the safe and reliable.