Subcritical core reactivity bias projection technique
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United States of America Patent
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Jul 19, 2022
Grant Date -
Jun 13, 2019
app pub date -
Dec 12, 2018
filing date -
Dec 12, 2017
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Abstract
A method to determine a global core reactivity bias and the corresponding estimated critical conditions of a nuclear reactor core prior to achieving reactor criticality. The method first requires collection and evaluation of the inverse count rate ratio (ICRR) data; specifically, fitting measured ICRR vs. predicted ICRR data. The global core reactivity bias is then determined as the amount of uniform reactivity adjustment to the prediction that produces an ideal comparison between the measurement and the prediction.
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