Decay Heat Calculation Methods for Low Enrichment Rod Type Fuel Elements PDF Download
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Author: E. R. Craig
Publisher:
ISBN:
Category : Nuclear fuel elements
Languages : en
Pages : 62
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Author: E. R. Craig
Publisher:
ISBN:
Category : Nuclear fuel elements
Languages : en
Pages : 62
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Author: Kam Fung Kwong
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Author: B. Duchemin
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ISBN:
Category :
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 50
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Author: Werner Stein
Publisher:
ISBN:
Category :
Languages : en
Pages : 138
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Author: OECD Nuclear Energy Agency
Publisher:
ISBN:
Category : After-heat
Languages : en
Pages : 39
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Author: Bright M. K. Wong
Publisher:
ISBN:
Category : Radioactive decay
Languages : en
Pages : 270
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Book Description
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.
Author: Michael Alan Bjerke
Publisher:
ISBN:
Category : Radioactive decay
Languages : en
Pages : 220
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The experimental measurements of the decay heat from the products of the thermal fission of U-235 have been compared with the OSU-proposed decay heat standard. These experiments are intended to verify the decay heat calculational methods and nuclear data files. The comparisons have included the previous experiments reviewed by Perry in 1973, and have extended the review to the current set of experiments. In addition, the calorimetric experiment of Lott, not included in Perry's evaluation, has been compared with the proposed standard. Except for the calorimetric experiment of Lott, none of the previous experiments were sufficient to judge the standard because of the large uncertainties they exhibited. The current experiments, however, have demonstrated much lower uncertainties and appear to constitute a reliable basis for the verification of the standard. Although some inconsistencies exist in the preliminary data of the ongoing experiments, the problems should be resolved before the final results are published. From the preliminary data of the ongoing experiments and from the final data of Lott, it is seen that there is substantive disagreement between calculation and experiment for short times after fission. This is probably due to the uncertainties in the nuclear data files for those fission products with short half-lives, which make a significant contribution to the decay heat at short cooling times.
Author: Masayuki Wada and Yujiro Ikeda Fujio Malekawa
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ISBN:
Category :
Languages : de
Pages :
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Author: Fujio Maekawa
Publisher:
ISBN:
Category : Fusion reactors
Languages : en
Pages : 200
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