49－2游泳池式反应堆一回路非能动破坏虹吸功能的建立

摘要

2013年49－2游泳池式反应堆增加了一回路非能动破坏虹吸功能，以弥补手动破坏虹吸阀门在特殊情况下不能打开的不足。在改造前，分别计算了在不同孔径的虹吸破坏孔下一回路正常运行时的漏流和事故情况下虹吸破坏能力。根据计算结果，在堆水池内一次水管道6�5 m高处打了一个1�6 cm直径的孔作为非能动破坏虹吸孔。验证表明，新增的非能动破坏虹吸孔即不影响反应堆的正常运行，也具备了破坏虹吸的功能。%The passive siphon breaker function of primary system was built for 49-2 SPR to make up the manual siphon breaker, which cannot be opened under special circumstances, in2013� The Leakage flow through passive siphon breaker hole under the normal operationand the ability of breaking siphon under the accidentfor various apertures of passive siphon breakerswere calculated separately� According to the calcu⁃lation results, a 1�6 cm diameter hole on the pipe of primary system bored at 6�5 m high is used as pas⁃sive siphon breaker� Experimental validation showed that the new passive siphon breaker does not affect the normal operation of the reactor, also meet siphon break function.