[3D01-04] Corrosion Chemistry and FP Behavior 1

[3D02] Development of dose rate reduction technology for improving LWR utilization

(8)Deposition and dissolution behavior of crud on the surface of fuel cladding tube underNWC and HWC conditions on simulated Fe/Ni ratio control conditions. -

*Masahiko Tachibana¹, Kazushige Ishida¹, Hideyuki Hosokawa¹, Mayu Sasaki², Ryosuke Shimizu², Noshi Usui², Hiromitsu Inagaki³ (1. R&D group, HITACHI, Ltd., 2. HITACHI-GE Nuclear Energy, Ltd., 3. Chubu Electric Power Co.,Inc.)

Keywords:Boiling water reactor, Dose rate reduction, Zinc injection, Cobalt

In order to improve accuracy of the corrosion product model for boiling water reactor, the effects of zinc injection on deposit and dissolution behavior of crud on the surface of fuel cladding tube under NWC and HWC conditions on simulated Fe/Ni ratio control conditions. It was found that the cobalt deposition amount on the surface of fuel cladding tube were mainly determined by iron deposition amount under both NWC and HWC condition.