CAJ | 학술논문

反应堆中子源的作用是提高次临界状态下堆芯的注量水平。在实际运行中，可能发生停堆时间较长致使中子源衰减，或中子源发生破损无法继续使用的情况。本文通过对已辐照燃料组件自发中子源和源量程探测器响应的计算分析，探讨使用已辐照燃料组件替代中子源的可能性。计算结果表明，首组入堆组件燃耗在24100MW·d·tU-1以上即可满足中子计数率监测的要求。本方法可为中子源意外破损提供解决方案。
반응퇴중자원적작용시제고차림계상태하퇴심적주량수평。재실제운행중，가능발생정퇴시간교장치사중자원쇠감，혹중자원발생파손무법계속사용적정황。본문통과대이복조연료조건자발중자원화원량정탐측기향응적계산분석，탐토사용이복조연료조건체대중자원적가능성。계산결과표명，수조입퇴조건연모재24100MW·d·tU-1이상즉가만족중자계수솔감측적요구。본방법가위중자원의외파손제공해결방안。
T he neutron source is used to increase the neutron fluence of reactor in sub-critical condition .In the actual operation ,either neutron source decay caused by long-time shutdow n or neutron source damage could make further use impossible .By calcu-lating and analyzing spontaneous neutron source of used fuel assembly and source range detector response ,the possibility of substituting used fuel assembly for neutron source was discussed .According to the result ,the requirement of neutron count rate monito-ring can be satisfied on condition that the first loading fuel assembly has a burnup of more than 24 100 MW · d · tU -1 .This method can provide a solution to unexpected neutron source damage .