Proceedings of the KSME Conference (대한기계학회:학술대회논문집)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Safety Evaluation of Motor-Operated Valves of Nuclear Power Plants By Using PPM

PPM을 이용한 원자력 발전소 모터구동밸브의 안전성 평가

  • 박수기 (한국전력공사 전력연구원) ;
  • 김대웅 (한국전력공사 전력연구원) ;
  • 정희권 (한국전력공사 전력연구원) ;
  • 박성근 (한국전력공사 전력연구원)
  • Published : 2001.06.27
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Abstract

PPM (Performance Prediction Methodology) developed by EPRI was introduced and applied to calculate the stem thrust of 3 and 4 inches flexible-wedge gate valves. The calculated stem thrusts of open and close strokes including cracking were compared with the results measured at in-situ differential pressure tests. The comparison has shown that PPM is an extremely conservative method to predict the minimum required stem thrust to operate motor-operated valves in a design basis accident condition of nuclear power plants.

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