原子炉容器上蓋管台ECT検査用の新しい薄型プローブの検証
英字タイトル:
Verification of new thin ECT probe for reactor vessel head nozzle
著者:
難波 一成 Kazushige NAMBA Non-Member 中井 正義 Masayoshi NAKAI Non-Member 神納 健太郎 Kentaro JINNO Non-Member 山口 岳彦 Takehiko YAMAGUCHI Non-Member 熊谷 肇 Hajime KUMATANI Non-Member 井原 亮一 Ryoichi IHARA Member 川浪 精一 Seiichi KAWANAMI Non-Member
発刊日:
公開日:
Verification of new thin ECT probe for reactor vessel head nozzle
著者:
難波 一成 Kazushige NAMBA Non-Member 中井 正義 Masayoshi NAKAI Non-Member 神納 健太郎 Kentaro JINNO Non-Member 山口 岳彦 Takehiko YAMAGUCHI Non-Member 熊谷 肇 Hajime KUMATANI Non-Member 井原 亮一 Ryoichi IHARA Member 川浪 精一 Seiichi KAWANAMI Non-Member
発刊日:
公開日:
カテゴリ: 論文
概要
The probe to be applied for the inner surface of the CRDM tubing having a narrow portion of the reactor vessel, however existing probe is not applicable to the minimum gap 1.5 mm of the CRDM tubing. It is necessary to study further thinning of the probe while maintaining sufficient detectability and flaw direction discrimination. Therefore, a new coil system using pancake coils was developed. As a result of a verification test, it was confirmed that an EDM flaw of 0.2 mm in length, 0.2 mm in width and 0.2 mm in depth could be detected and the flaw direction could be identified.
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