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Method of measuring the neutron flux in the core of a nuclear reactor using a cobalt detector and associated device
Method of measuring the neutron flux in the core of a nuclear reactor using a cobalt detector and associated device
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机译:使用钴探测器和相关装置测量核反应堆堆芯中子通量的方法
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摘要
A method for measuring the neutron flux in the core of a nuclear reactor, the method including several steps recurrently performed at instants separated by a period, the method comprising at each given instant the following steps: acquiring a total signal by a cobalt neutron detector placed inside the core of the reactor; assessing a calibration factor representative of the delayed component of the total signal due to the presence of cobalt 60 in the neutron detector; assessing a corrected signal representative of the neutron flux at the detector from the total signal and from the calibration factor; assessing a slope representative of the time-dependent change of the calibration factor between the preceding instant and the given instant; the calibration factor at the given instant being assessed as a function of the calibration factor assessed at the preceding instant, of the slope, and of the time period separating the given instant from the preceding instant.
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