HTR-10第二停堆系统的试验与调试

Verification Test of Second Shutdown System of HTR-10

吸收球停堆装置是10MW高温气冷实验堆的第二停堆系统。控制棒失效时,碳化硼中子吸收球落入堆芯反射层的吸收球孔道内,实现紧急停堆;反应堆再次临界前,利用气体输送装置将吸收球送回位于堆顶的贮球罐内。在实验室和高温堆上先后进行了7套吸收球装置的热态试验和输送功能试验。试验数据表明:吸收球系统7套装置的落球和回球动作正常,所用的时间在要求的范围内;球位状态指示正常;气体回路流动正常,风机的流量、压升正常;12个阀门的开、闭功能正常。

The neutron absorption spheres system is the second shutdown system of the 10 MW High-Temperature Gas-Cooled Test Reactor (HTR-10). This system is designed for emergent shutdown by spheres falling down into core reflector when the control rod system is out of operation. Before the re-start of the nuclear reactor, the spheres are transported from the core reflector back to spheres storage tanks beneath the reactor pressure shell top lid by pneumatic conveying process. Seven sets of absorption sphere shutdown system equipment are verified by thermal test and pneumatic conveying test in laboratory and on the HTR-10. System parameters including spheres falling down time, conveying time, spheres level indicator, Rose Motor gas flowrate, and valves open-close state are acceptable.