Transactions of the Korean Society of Pressure Vessels and Piping (한국압력기기공학회 논문집)

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Review on the Integrity Evaluation and Maintenance of Wall-Thinned Pipe

감육배관의 건전성평가 및 정비 관련 기술기준 고찰

  • 이성호 (한국수력원자력(주) 중앙연구원) ;
  • 이요섭 (한국수력원자력(주) 중앙연구원) ;
  • 김홍덕 (한국수력원자력(주) 중앙연구원) ;
  • 이경수 (한국수력원자력(주) 중앙연구원) ;
  • 황경모 (한국전력기술(주) 재료기술그룹)
  • Received : 2015.05.22
  • Accepted : 2015.11.05
  • Published : 2015.12.30
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Abstract

Local wall thinning and integrity degradation caused by several mechanisms, such as flow accelerated corrosion, cavitation, flashing and/or liquid droplet impingement, is a main concern in secondary steam cycle piping system of nuclear power plants in terms of safety and operability. Thinned pipe management program (TPMP) has being developed and optimized to reduce the possibility of unplanned shutdown and/or power reduction due to pipe failure caused by wall thinning. In this paper, newest technologies, standards and regulations related to the integrity assessment, repair and replacement of thinned pipe component are reviewed. And technical improvement items in TPMP to secure the reliability and effectiveness are also presented.

Keywords

References

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