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使用MELCOR 2.1程序建立ACP1000自然循环模型,选取全厂断电叠加辅助给水丧失严重事故(TMLB’),分析主冷却剂管道热段和蒸汽发生器(SG)传热管自然循环现象,采用蠕变失效模型评价主冷却剂系统(RCS)部件失效时间。结果表明,压力容器(RPV)出口接管比有裂纹的SG最热传热管先失效。
The MELCOR 2.1 program was used to establish the natural circulation model of ACP1000, and the TMLB ’was selected to analyze the natural circulation of heat pipe of main coolant pipe and steam generator (SG). The creep Failure models evaluate the failure of the main coolant system (RCS) components. The results show that the outlet of the pressure vessel (RPV) failed first than the cracked SG heat pipe.