A new method of In-Core Monitor Housing replacement has been successfully applied to Tokai Unit 2 (BWR with 1100 MWe) in April of 2001. It was designed to replace a housing under dry condition of reactor pressure vessel (RPV): this enabled the elimination of water filled-up and drained processes during the replacement procedure resulting in the reduction of implementation schedule. To realize the dry condition, the radiation shields were placed in the RPV and the hollow guide pipe (GP) was adopted to transfer the apparatuses from the top to the bottom work area.
- Nuclear Engineering Division
BWR In-Core Monitor Housing Replacement Under Dry Condition of Reactor Pressure Vessel
Ishida, T, Yamamoto, S, Eguchi, F, Fuse, M, Kurosawa, K, Shimizu, S, Masuda, M, Fujii, S, Tanaka, J, & Jacobson, BA. "BWR In-Core Monitor Housing Replacement Under Dry Condition of Reactor Pressure Vessel." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 1. Arlington, Virginia, USA. April 14–18, 2002. pp. 407-412. ASME. https://doi.org/10.1115/ICONE10-22679
Download citation file: