Shot Peening Technique for Reducing Residual Tensile Stress of Core Shroud on Chepco H-1/2

Author:  S. Shima, M. Obata, K. Sato, M. Kimura, A. Sudo
Source:  6th International Conference on Nuclear Engineering
Doc ID:  1998018
Year of Publication:  1998
Abstract:  
Abstract The shot peening technique was practically applied to the core shroud in Hamaoka Nuclear Power Station Unit 1,2 in Chubu Electric Power Co., Inc. (CHEPCO) as a preventive maintenance technique to enhance the resistance for Stress Corrosion Cracking (SCC). The water projection type shot peening technique which was developed to process the core shroud under water, could securely convert the welding induced tensile stress into compressive stress.