基于仿真系统的MSLB事故后运行计算分析

Calculation and Analysis of Post-MSLB Operation Based on Simulation System

摘要: 以RELAP5-3KEYMASTER仿真系统为平台，模拟了一体化小型堆(SMR)在发生主蒸汽管道双端断裂(MSLB)事故的瞬态。对事故发生后系统自动响应行为和依据事故规程(EOPs)进行人为干预这两种情况分别进行了计算，对比并研究了事故后主要参数的变化趋势，并分析其原因，提出了应用于事故规程开发和验证的事件序列以及操纵员的干预措施。

Abstract: This paper researched the behavior of main steam line break (MSLB) accident of integrated small modular reactor (SMR) with RELAP5-3KEYMASTER simulation system. Two different conditions of MSLB, by system automatic actuation without intervention after MSLB and with operator intervention according to emergency operating procedures (EOPs) are calculated and compared. Tendency and reasons for the variation of main parameters after MSLB have been analyzed. And the events sequence and operation intervention for development and verification of EOPs are given.