한국안전학회지 (Journal of the Korean Society of Safety)

  • 제20권3호
  • /
  • Pages.34-41
  • /
  • 2005
  • /
  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

고온배관 T-부의 응력해석 및 잔여수명평가

Stress Analysis and Residual Life Assessment of T-piece of High Temperature Pipe

  • 권양미 (중앙대학교 기계공학부 대학원) ;
  • 마영화 (중앙대학교 기계공학부 대학원) ;
  • 조성욱 (중앙대학교 기계공학부) ;
  • 윤기봉 (중앙대학교 기계공학부)
  • Kwon, Yang-Mi (Graduate School, Department of Mechanical Engineering, Chung Ang University) ;
  • Ma, Young-Wha (Graduate School, Department of Mechanical Engineering, Chung Ang University) ;
  • Cho, Seong-Wook (Department of Mechanical Engineering, Chung Ang University) ;
  • Yoon, Kee-Bong (Department of Mechanical Engineering, Chung Ang University)
  • 발행 : 2005.09.30
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초록

For assessing residual lift of the steam pipe in fossil power plants, inspections and analysis are usually focused on the critical locations such as butt welds, elbows, Y-piece and T-piece of the steam pipes. In predicting the residual life of T-piece, determination of local stress near welds considering system load as well as internal pressure is not a simple problem. In this study, stress analysis of a T-piece pipe was conducted using a three-dimensional model which represents the T-piece of a domestic fossil power station. Elastic and elastic-creep analysis showed the maximum stress level and its location. Residual creep rupture life was also calculated using the stress analysis results. It was argued that the calculated life is reasonably same as the measured one. The stress analysis results also support life prediction methodology based on in-field replication technique.

키워드

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