S0820104 高クロム鋼配管のLBB成立性を確保するための破壊靭性要求  [in Japanese] S0820104 Requirements for Fracture Toughness to Satisfy LBB Behavior of a Pipe Made of High Chromium Steel  [in Japanese]

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Abstract

The volumetric test for piping of a sodium cooled fast reactor (SFR) is difficult from the poor accessibility. Therefore, detection of a crack in a pipe is difficult until its penetration, and an SFR has a plan to detect sodium leakage from a through wall crack before fracture of a pipe. Plant safety is ensured by detection of sodium leakage in small quantity and by shutting down a plant as soon as possible, even if crack penetrates a pipe wall. Consequently, it is important to ensure establishment of leakage-before-break (LBB) in this plan. High chromium steel (Mod. 9Cr-1Mo steel) is one of the candidates for fast reactor piping material. Effects of a fracture resistance curve (J-R curve) on fracture strength of a cracked pipe made of this material are evaluated in this study, and requirements for a J-R curve to achieve the LBB were proposed.

Journal

  • The Proceedings of Mechanical Engineering Congress, Japan

    The Proceedings of Mechanical Engineering Congress, Japan 2015(0), _S0820104--_S0820104-, 2015

    The Japan Society of Mechanical Engineers

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