船用核动力装置堆舱泄压手段的特性研究

针对船用压水堆建立反应堆主要系统和堆舱的热工水力计算模型。以主冷却剂管道破口事故为假想事故，利用该模型对事故过程进行仿真计算，重点分析了事故后堆舱压力的响应情况，比较了舱室喷淋、泄压箱和过滤排放3种堆舱泄压措施的效果。分析结果表明：事故发生后如无缓解措施，堆舱压力将很快超出限值，此时采用堆舱喷淋将是一种较为有效的泄压措施。

Study on Measures to Depressurize in Reactor Compartment of a Marine Nuclear Power Plant

According to the characteristics of a marine nuclear power plant,an analysis model is estab-lished to calculate thermal-hydraulic characteristics of main reactor systems and reactor compartment.As-suming that the break loss of coolant accident is the benchmark accident.The accident process is simulated using the established model.This paper focuses on the analysis of pressure response characteristic of reac-tor compartment.Three depressurization measures including spray,depressurization box and filtration dis-charge are compared.The calculation results show that if no effective measures are used after the accident occurs,pressure in reactor compartment will overstep the bounds of safe quickly.At this time,spray is an effective measure to depressurization in reactor compartment.