• 제목/요약/키워드: 계기용 소형밸브

검색결과 1건 처리시간 0.016초

계기용 밸브 재질의 검증 인장시험에 의한 사용적합성 평가 (Fitness-for-Service Assessment for Instrument Valve Material by Tensile Test for Verification)

  • 신인환;박치용
    • 한국압력기기공학회 논문집
    • /
    • 제17권1호
    • /
    • pp.49-55
    • /
    • 2021
  • In this paper, an application example for fitness-for-service of material is shown. A kind of instrument valve is made of austenitic stainless steel fabricated by the cold working process. The tensile strength of the cold worked austenitic stainless steel has to be limited under 90 ksi to prevent the stress corrosion cracking in power plants. In industrial fields, tensile strengths of some materials were discovered to be over the regulation requirements in a certified material test report (CMTR). Owner's verification tests were performed to compare with that in a CMTR and to check the appropriateness. It is found that, in the case of verification test under the required test speed, valve materials could be used in the field. Although it is only one application sample of material check process in the power generation site, this case study could show an importance of basic experimental technology in academia and research circles.