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

Korean Society of Pressure Vessels and Piping (한국압력기기공학회)
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Stress Evaluation and Case Study of Reinforced Wall-thinned Class 2 and 3 Pipes in Operating Nuclear Power Plants Using Equivalent Stiffness Concept

등가 강성 개념을 이용한 가동 원전 2, 3등급 감육 보강 배관의 응력 평가 및 사례해석

  • ;
  • 김재윤 (고려대학교 기계공학부) ;
  • 황진하 (육군사관학교 기계시스템공학과) ;
  • 김윤재 (고려대학교 기계공학부) ;
  • 김만원 (한국수력원자력(주) 중앙연구원)
  • Received : 2022.11.17
  • Accepted : 2022.12.23
  • Published : 2022.12.30
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Abstract

ASME BPVC provides stress evaluation rules for Class 2 and 3 nuclear piping. However, such rules are difficult to be applied to reinforced wall-thinned pipes during service. To resolve this issue, a new method for stress evaluation of reinforced wall-thinned pipes is proposed in this work, based on the equivalent stiffness concept. By converting a reinforced wall-thinned pipe to an equivalent straight pipe having the same stiffness, stress evaluation can be proceeded using the current ASME BPVC rules. The proposed method is applied to pipes with 4 different normal pipe size and the effects of reinforcement and wall-thinning dimensions on evaluated stresses are discussed.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다(No. 20193110100020).

References

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