Correlation between Code Threshold/Criteria and Ultrasonic Testing Data Analysis Method in Reactor Vessel In-service Inspection

LI Su-jia; NIE Yong; XU Yuan-huan

Volume 25 Issue 1

Feb. 2004

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LI Su-jia, NIE Yong, XU Yuan-huan. Correlation between Code Threshold/Criteria and Ultrasonic Testing Data Analysis Method in Reactor Vessel In-service Inspection[J]. Nuclear Power Engineering, 2004, 25(1): 1-3.

Citation:

LI Su-jia, NIE Yong, XU Yuan-huan. Correlation between Code Threshold/Criteria and Ultrasonic Testing Data Analysis Method in Reactor Vessel In-service Inspection[J]. Nuclear Power Engineering, 2004, 25(1): 1-3.

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Correlation between Code Threshold/Criteria and Ultrasonic Testing Data Analysis Method in Reactor Vessel In-service Inspection

Research Institute of Nuclear Power Operation, Wuhan, 430074, China

Received Date: 2003-04-05
Rev Recd Date: 2003-10-20

Available Online: 2025-07-29

Publish Date: 2004-02-15

Abstract

Abstract

The relationships among recording threshold, threshold of characterization and acceptance criteria defined in RSEM Code, as well as that between the UT sizing techniques of 6dB drop and crack tip diffraction methods, are analyzed in detail. The corresponding relationships between Code defined thresholds or criteria and suitable data analysis and indication treatment methods in NPP RPV PSI and ISI are clearly determined in this paper. The principle adopted by this method can be applied to data analysis and indication acceptance of other components PSI and ISI in NPP primary loop.
- In-service inspection,
- Threshold ＆ criteria,
- Data analysis,
- Relationship