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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6.5m高处打了一个1.6cm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。
In 2013, the 49-2 swimming pool reactor added a loop of passive damage to the siphon function to make up for the handicapped siphon valve that could not be opened under special circumstances. Before retrofitting, we calculated the leakage and the siphon failure capacity under the normal operation of the next circuit of siphon damage holes with different pore sizes respectively. According to the calculation results, a 1.6cm diameter hole was drilled at a height of 6.5m at the primary water pipe in the reactor pool to act as a passive failure siphon hole. Verification shows that the newly added passive siphon hole does not affect the normal operation of the reactor, but also has the function of damaging the siphon.