Correlation analysis of decay heat experiments and summation calculations Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/gt54kr47k

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  • There are two primary methods of determining the decay heat generated after the shutdown of a nuclear reactor. One of these methods is integral experimental measurement of decay heat from the products of thermal-neutron fission of 235 U. The other method is a summation calculation (computer codes) based on nuclear data files. Confidence bounds for the best estimate of the decay heat can be calculated from a comparative analysis of experimental measurements and summation results. In the analysis, smoothing procedures were used to minimize the random variation in the data. Currently, the specification of decay heat relies on the American Nuclear Society (ANS) standard [1] which has very large uncertainties. The goal of this report is to provide accurate decay heat specifications which are composite predictions from the most recent integral experiments.
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