Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Analysis of Weld Beads for Wall Thinning Defects in the Weld Zone of the Boost Pump Recirculation Pipe for Power Plants and Evaluation of Their Integrity

플랜트 승압펌프 재순환 배관 용접부의 용접비드에 의해 발생한 감육결함 분석 및 건전성 평가

  • Nam, Ki-Woo (Materials Science and Engineering, Pukyong National University) ;
  • Ahn, Seok-Hwan (Bukyong Education Center for Vehicle Safety Component Technology, Pukyong National University) ;
  • Do, Jae-Yoon (Busan Campus of Korea Polytechnic VII)
  • 남기우 (부경대학교 신소재공학부) ;
  • 안석환 (부경대학교 수송기계안전편의융합부품소재인재양성센터) ;
  • 도재윤 (한국폴리텍VII대학 부산캠퍼스 컴퓨터응용기계과)
  • Received : 2010.07.02
  • Accepted : 2010.08.16
  • Published : 2010.08.31
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Abstract

The wall thinning phenomenon of pipes was simulated as metal loss due to erosion and corrosion. Such wall thinning defects in the pipes of power plants are a very important safety consideration. In this study, we analyzed wall thinning defects that occurred by weld bead of weld zone of boost pump recirculation pipe. From the results of the analysis of pipe failures, numerical analysis was performed by Fluent v6.3.26 using the standard k-$\varepsilon$ model of the weld bead shape, such as an elliptical or a spherical shape, on the inner wall of the pipe. Using the results obtained, we showed the overlap effect by cavitations corrosion and erosion-corrosion at the bottom of the wall-thinning defect.

Keywords

References

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