배관감육 평가를 위한 UT 측정 신뢰도 분석
분야
공학 > 금속공학
저자
윤훈 ( Hun Yun ) , 황경모 ( Kyeong Mo Hwang )
발행기관
한국부식방식학회(구 한국부식학회)
간행물정보
Corrosion Science and Technology 2012년, 제11권 제4호, 129~134페이지(총6페이지)
파일형식
22504222.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    UT (Ultrasonic Test), one of the non-destructive tests, is the most common thickness measurement method for evaluating the wear rate in NPPs (Nuclear Power Plants). UT is used widely because it is easy and safe for use. However some amount of error inevitably occurs in attempting to measure the thickness. The error, that could make the thickness data thicker or thinner, may affect estimation of wear rate in pipes. NPPs are composed of a lot of pipes and components. Some of them are tested to check the current status during RFO (Re-Fueling Outage). Reliability analysis of UT is essential for evaluating pipe wear rate and establishing the long-term management plan in NPPs. This paper reviewed the cause of error occurrence and presented the UT data reliability analysis method. Also, this paper shows the application result of reliability analysis to the UT data acquired in NPPs.
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