浅析H4工况下RIS与EAS的互为备用和调试

Mutual Standby and Debug of EAS and RIS under H4 Condition

针对失水事故(LOCA)后防止低压安注泵或安全壳喷淋泵功能完全失效(H4)的超设计基准事故,设计了H4管线,在H4工况时,利用仍然可用的低压安注泵或安全壳喷淋泵实现堆芯长期冷却的功能。对H4工况下安全注入系统(RIS)与安全壳喷淋系统(EAS)的备用进行试验,通过选取低特性与高特性的低压安注泵和低特性的安全壳喷淋泵,验证了各项性能参数在事故工况时仍能满足要求,同时验证了向反应堆冷却剂系统(RCP)系统冷、热段注入时,泵的出口流量满足秦山核电厂扩建项目(方家山核电工程)调试大纲中的安全准则。

After the loss of coolant accident(LOCA) for preventing low pressure safety injection pump or a security shell spray pump function complete failure(H4) beyond design basis accident, design the H4 pipeline, in H4 conditions using still available low pressure safety injection pump or containment spray pump to realize the functions of the reactor core, long-term cooling. Of H4 condition under the safety injection system(RIS) and the containment spray system(EAS) reserve for test, by selecting features: low and high performance of the low pressure safety injection pump and low characteristic of the containment spray pump to verify the parameters in accident conditions can still meet the requirements, at the same time verified to the reactor coolant system(RCP) cooling system, thermal injection, outlet flow of the pump meet the Qinshan nuclear power plant expansion project(Fang Shan nuclear power project) debugging safety standards in the outline.