Abstract
Bundang M-TOWER, 8 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-870, KEPCO EC Revised April 24, 2013; Accepted April 25, 2013)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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