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http://dx.doi.org/10.14773/cst.2013.12.2.079

A Study on the Verification of Network Flow Analysis Methodology of CHECWORKS Program used in Pipe Wall Thinning Management  

Seo, Hyuk Ki (KEPCO E&C, Republic of KOREA)
Hwang, Kyeong Mo (KEPCO E&C, Republic of KOREA)
Publication Information
Corrosion Science and Technology / v.12, no.2, 2013 , pp. 79-84 More about this Journal
Abstract
In general, pipelines at nuclear power plants are affected by various types of degradation mechanisms and may be ruptured after gradually thinning. FAC (Flow-Accelerated Corrosion) is typical aging mechanism affecting the secondary side piping system. In Korea nuclear power plants, CHECWORKS program have been used for management of wall thinning damages. However, sometimes, CHECWORKS program shows wrong results at the stage of NFA (Network Flow Analysis) in case of complex pipelines. This paper describes the calculation results of pressure drop in a complex pipeline and single line by using the CHECWORKS program and the analysis results are compared with those of engineering calculation results including errors between them.
Keywords
Flow-Accelerated Corrosion(FAC); CHECWORKS; Network Flow Analysis(NFA); Wear Rate Analysis(WRA); Wall Thinning;
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