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Analysis of Pipe Wall-thinning Caused by Water Chemistry Change in Secondary System of Nuclear Power Plant
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  • Journal title : Corrosion Science and Technology
  • Volume 14, Issue 6,  2015, pp.325-330
  • Publisher : The Corrosion Science Society of Korea
  • DOI : 10.14773/cst.2015.14.6.325
 Title & Authors
Analysis of Pipe Wall-thinning Caused by Water Chemistry Change in Secondary System of Nuclear Power Plant
Yun, Hun; Hwang, Kyeongmo; Moon, Seung-Jae;
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 Abstract
Pipe wall-thinning by flow-accelerated corrosion (FAC) is a significant and costly damage of secondary system piping in nuclear power plants (NPPs). All NPPs have their management programs to ensure pipe integrity from wall-thinning. This study analyzed the pipe wall-thinning caused by changing the amine, which is used for adjusting the water chemistry in the secondary system of NPPs. The pH change was analyzed according to the addition of amine. Then, the wear rate calculated in two different amines was compared at the steam cycle in NPPs. As a result, increasing the pH at operating temperature (Hot pH) can reduce the rate of FAC damage significantly. Wall-thinning is affected by amine characteristics depending on temperature and quality of water.
 Keywords
flow-accelerated corrosion;wall-thinning;water chemistry;
 Language
Korean
 Cited by
1.
원전 2차계통의 출력증강 운전에 따른 배관감육 영향 분석,윤훈;황경모;이효승;문승재;

Corrosion Science and Technology, 2016. vol.15. 3, pp.135-140 crossref(new window)
1.
Analysis of Wall-Thinning Effects Caused by Power Uprates in the Secondary System of a Nuclear Power Plant, Corrosion Science and Technology, 2016, 15, 3, 135  crossref(new windwow)
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