BWR 模擬環境での SCC 試験のためのすき間形成材の評価
Evaluation of crevice former for SCC initiation experiment in simulated BWR water environment
著者:
阿部 博志 Hiroshi ABE 石倉 潤一 Junichi ISHIKURA 渡邉 豊 Yutaka WATANABE
発刊日:
公開日:
Crevice formerCreviced bent beam testGraphite fiber woolStainless steelStress corrosion cracking
概要
The crevice former which does not release anion impurities (e.g. Cl-) for SCC (Stress Corrosion Cracking) initiation experiment in simulated boiling water reactor water environment has been ev aluated. The creviced bent beam tests of sensitized stainless steel with using the crevice condition as an experimental parameter were carried out. Even SCC occurred at the part of specimen su rface which tested with only the spacer (no crevice former), it has been difficult to obtain the reproducible result. SCC initiation was apparently accelerated by using the stainless steel woo l as a crevice former. The shape of the stainless steel wool was maintained during the CBB experiment. It has been considered that the stainless steel wool will be alternative crevice former.
