국내원전에 매설된 콜타르 코팅 배관의 음극방식과 FEM법을 이용한 방식성능 시뮬레이션

장현영; 김기태; 임부택; 김경수; 김재원; 박흥배; 김영식

doi:https://doi.org/10.14773/cst.2017.16.3.115

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자료유형: 학술저널

저자정보: 장현영 (한국전력기술 (주)) 김기태 (안동대학교) 임부택 (한국전력기술(주) 전력기술연구소) 김경수 (한국전력기술 (주)) 김재원 (한국전력기술 미래전력기술연구소) 박흥배 (한국전력기술 (주)) 김영식 (안동대학교)

저널정보: 한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY 제16권 제3호

발행연도: 2017.6

수록면: 115 - 127 (13page)

DOI: https://doi.org/10.14773/cst.2017.16.3.115

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Coal tar-coated pipes buried in a domestic nuclear power plant have operated under the cathodic protection. This work conducted the simulation of the coating performance of these pipes using a FEM method. Thepipes, being ductile cast iron have been suffered under considerably high cathodic protection condition beyondthe appropriate condition. However, cathodic potential measured at the site revealed non-protected status. Converting from 3D CAD data of the power plant to appropriate type for a FEM simulation was conductedand cathodic potential under the applied voltage and current was calculated using primary and secondarycurrent distribution and physical conditions. FEM simulation for coal tar-coated pipe without defects revealedover-protection condition if the pipes were well-coated. However, the simulation for coal tar-coated pipeswith many defects predict that the coated pipes may be severely degraded. Therefore, for high risk pipes,direct examination and repair or renewal of pipes are strongly recommended.

#nuclear power plant #coal tar-coated buried pipe #FEM #cathodic protection

참고문헌 (14)

참고문헌 신청

2010 / EPRI 1016456, Recommendations for an Effective Program to Control the Degradation of Buried and Underground Piping and Tanks, Revision 1

KISTEK / 1999 / Development of corrosion environment survey and analysis method for buried pipe (II)

KOGAS / 2003 / Protection technique handbook :18

2011 / EPRI 1022962, Plant Engineering: Evaluation of Indirect Assessment Techniques for Coating Flaw Detection

2010 / NUREG-1801, Generic Aging Lessons Learned (GALL)Report, Revision 2 / USNRC, Dec

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