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http://dx.doi.org/10.14773/cst.2015.14.1.33

Method and Application for Reliability Analysis of Measurement Data in Nuclear Power Plant  

Yun, Hun (KEPCO E&C)
Hwang, Kyeongmo (KEPCO E&C)
Lee, Hyoseoung (KEPCO E&C)
Moon, Seungjae (Mechanical Department, Hanyang University)
Publication Information
Corrosion Science and Technology / v.14, no.1, 2015 , pp. 33-39 More about this Journal
Abstract
Pipe wall-thinning by flow-accelerated corrosion and various types of erosion is significant damage in secondary system piping of nuclear power plants(NPPs). All NPPs in Korea have management programs to ensure pipe integrity from degradation mechanisms. Ultrasonic test(UT) is widely used for pipe wall thickness measurement. Numerous UT measurements have been performed during scheduled outages. Wall-thinning rates are determined conservatively according to several evaluation methods developed by Electric Power Research Institute(EPRI). The issue of reliability caused by measurement error should be considered in the process of evaluation. The reliability analysis method was developed for single and multiple measurement data in the previous researches. This paper describes the application results of reliability analysis method to real measurement data during scheduled outage and proved its benefits.
Keywords
wall thinning; ultrasonic thickness measurement; reliability analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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