Hitachi Zosen Corporation

Central Research Institute of Electric Power Industry

Akio Ohiwa

Keisuke Okada

Tomohiro Tanaka

Masanori Goto

Akikazu Kitagawa

Katsunori Kusunoki

Koji Shirai

Akihito Gohda

Yasuhiro Fukai

A method to prevent stress corrosion cracking of a storage canister, wherein stress corrosion cracking is prevented by applying a compressive stress to a range where a tensile residual stress is generated on a metallic bodyby welding a coverto a topof the body. A first compressive stress is applied beforehand to a range L of the bodywhere a tensile residual stress is expected to be generated by the welding of the cover, the tensile residual stress is canceled by welding the coverwith a compressive residual stress generated in the range L, and then a second compressive stress is applied so as to generate a compressive residual stress over the range L.

Method to prevent stress corrosion cracking of storage canister and storage canister

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Osaka, Japan

Akio Ohiwa