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- Material Type
- 規格・テクニカルリポート類
- Author/Editor
- 柳澤 宏司梅田 幹求 惟子村尾 裕之
- Publication Date
- 2023-02
- Publication Date (W3CDTF)
- 2023
- Alternative Title
- Nuclear criticality benchmark analyses on TRIGA-type reactor systems by using continuous-energy Monte Carlo code MVP with JENDL-5
- Periodical title
- JAEA-Technology 2022-030
- Target Audience
- 一般
- Note (General)
- 出版タイプ： NA連続エネルギーモンテカルロコードMVPと評価済み核データライブラリJENDL-5によって、ウラン水素化ジルコニウム燃料棒を用いるTRIGA型原子炉体系の臨界ベンチマーク解析を行った。解析対象は、国際臨界安全ベンチマークプロジェクト(ICSBEP)のハンドブックに掲載されているIEU-COMP-THERM-003とIEU-COMP-THERM-013の二種類のデータであり、中性子実効増倍率、制御棒等の反応度価値について旧バーションのJENDLを使用した結果と比較した。その結果、JENDL-5による中性子実効増倍率はJENDL-4.0よりも0.4から0.6\%大きく、制御棒等の反応度価値は、JENDL-5とJENDL-4.0との有意な差は無いことが分かった。これらの解析結果は今後予定しているNSRRの制御棒反応度価値等の解析において、計算精度の確認の参考になるものと考えられる。Nuclear criticality benchmark analyses were carried out for TRIGA-type reactor systems in which uranium-zirconium hydride fuel rods are loaded by using the continuous-energy Monte Carlo code MVP with the evaluated nuclear data library JENDL-5. The analyses cover two sorts of benchmark data, the IEU-COMP-THERM-003 and IEU-COMP-THERM-013 in the International Criticality Safety Benchmark Evaluation Project (ICSBEP) Handbook, and effective neutron multiplication factors, reactivity worths for control rods etc. were calculated by JENDL-5 in comparison with those by the previous version of JENDL. As the results, it was confirmed that the effective neutron multiplication factors obtained by JENDL-5 were 0.4 to 0.6\% greater than those by JENDL-4.0, and that there were no significant differences in the calculated reactivity worths by between JENDL-5 and JENDL-4.0. Those results are considered to be helpful for the confirmation of calculation accuracy in the analyses on NSRR control rod worths, which are planned in the future.
- Source
- /JAEA-Technology-2022-030(errata).pdf （fulltext）/JAEA-Technology-2022-030.pdf （fulltext）