水素注入による環境改善効果の評価方法ガイドライン
The Guideline of evaluating the effectiveness of environmental improvementby Hydrogen Water Chemistry
著者:
寺門 剛 Takeshi TERAKADO 伊東 敬 Takashi ITO 小野 昇一 Shoichi ONO 高木 純一 Junichi TAKAGI 関 弘明 Hiroaki SEKI 和田 陽一 Yoichi WADA
発刊日:
公開日:
BWRECPHWCJANTI GuidelineSCC
概要
Water environment improvement (ex. Hydrogen Water Chemistry (HWC)) is carried out for Stress Corrosion Cracking (SCC) mitigation in some of BWR plants. Japan Nuclear Technology Institute (JANTI) has the guideline on the inspection programs based on effectiveness of environmental SCC mitigation technique for BWR core internals. The guideline provides the crack growth rate (CGR) under HWC. Although CGR is defined by ECP (electroch emical corrosion potential), a dealing of evaluation of ECP and the HWC availability is unclear. For these reason, the guideline of inspection program is not applied. The new JANTI guideline enables to reflect the ef fect of environmental improvement in the inspection program. This guideline defines the water condition and the relationship between ECP and rate of hydrogen injection, and CGR can be decided by the HWC availability.
