Preliminary verification of water radiolysis and ECP calculation models by in-pile ECP measurements

炉内測定ECPによるラジオリシス及びECP計算モデルの予備的検証

塙 悟史 ; 端 邦樹 ; 知見 康弘; 笠原 茂樹

Hanawa, Satoshi; Hata, Kuniki; Chimi, Yasuhiro; Kasahara, Shigeki

Water radiolysis and ECP calculations models were preliminary verified using in-pile ECP and related measurement data obtained under BWR and PWR simulated conditions. Two separate anodic polarization curves were supposed in ECP calculations in order to deal with the material surface condition changed by water chemistry, and the measured ECP under BWR simulated conditions were well explained by the calculations. ECP calculations under PWR simulated conditions were also carried out supposing the other polarization curve applicable to the temperature range of 593 K and good agreement between the measurement and the calculations was obtained.