PWR高燃焼度先行照射燃料の核種組成測定及びSWAT4.0による解析

Measurement and analysis by SWAT4.0 of isotopic composition of PWR high-burnup lead use assembly

渡邉 友章  ; 菊地 丈夫 ; 外池 幸太郎 ; 須山 賢也

Watanabe, Tomoaki; Kikuchi, Takeo; Tonoike, Kotaro; Suyama, Kenya

燃焼計算コードの妥当性確認に必要な照射後試験データの拡充のため、大飯発電所4号機で先行照射された1717型高燃焼度燃料(約53GWd/t)から得られた9試料について、ペレット中の核種組成測定を実施した。SWAT4.0を用いた燃焼計算を行い、測定結果と比較した。

In order to obtain new post irradiation examination data for validation of burnup calculation codes, isotopic compositions of 9 samples obtained from a 1717 high-burnup lead use assembly (53 GWd/t), which was irradiated in Ohi Nuclear Power Station Unit 4, were measured. The isotopic compositions were also evaluated by burnup calculations with SWAT4.0 code and compared with the measurements.