Effects of Gap between Tube and Support Plate on the Steam Generator Tube Wear

증기발생기 세관과 지지대 간극이 세관 마모에 미치는 영향

  • 박치용 (한국전력공사 한전전력연구원) ;
  • 이용선 (한국전력공사 한전전력연구원 원자력연구실) ;
  • 부명환 (한국전력공사 한전전력연구원 원자력연구실) ;
  • 김태룡 (한국전력공사 한전전력연구원 원자력연구실) ;
  • 김태순 (충북대학교 안전공학과)
  • Published : 2004.11.03

Abstract

The major flow-induced vibration mechanisms such as fluid-elastic and turbulence excitation can cause the various types of wear of the steam generator tubes in unclear power plant. It is generally accepted that the tube wear due to vibration is affected by the presence of gap clearance between tube and support plate. Connors showed that the tube wear depth could be estimated by using the relationship between wear volume and sliding distance for contact time. Au-Yang predicted the wear depth by using the nonlinear characteristics of normal work rate to contact time. In this study the effect of gap size on the steam generator tubes wear is analyzed by deriving the wear depth versus normal work rate relationship from these previous results.

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