发明名称 |
Safety system grade apparatus and method for detecting a dropped control rod and malfunctioning exit thermocouples in a pressurized water reactor |
摘要 |
A safety system grade dropped rod detection system for a pressurized water reactor (PWR) utilizes core exit thermocouples arranged in multiple trains and hot and cold leg RTDs to generate a safety system grade rod stop signal. The system generates from the temperature signals a relative power deviation (RD) and a curvature index (CI), which is the spatial second derivative of RD for each fuel assembly. The CI signatures not only provide rapid, reliable detection of dropped control rods, but also clearly identify failed and failing thermocouples.
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申请公布号 |
US5297174(A) |
申请公布日期 |
1994.03.22 |
申请号 |
US19930067280 |
申请日期 |
1993.05.26 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
IMPINK, JR., ALBERT J.;HEIBEL, MICHAEL D.;MORITA, TOSHIO;CALVO, RAYMOND |
分类号 |
G21C7/08;G21C7/12;G21C17/10;G21C17/112;G21D3/04;(IPC1-7):G21C7/06 |
主分类号 |
G21C7/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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