수소환경에서의 재료 열화도 평가

Assessment of Materials Degradation in a Hydrogen Environment

  • 원순호 (한국기계연구원 공인시험평가부 비파괴평가그룹) ;
  • 현양기 (한국기계연구원 공인시험평가부 비파괴평가그룹) ;
  • 이종오 (한국기계연구원 공인시험평가부 비파괴평가그룹) ;
  • 이재도 (한국기계연구원 공인시험평가부 비파괴평가그룹) ;
  • 조경식 (한국기계연구원 공인시험평가부)
  • 발행 : 2001.12.20

초록

Hydrogen damage affects carbon steel tubes in many fossil-fuel-fired boilers, often causing large tube ruptures that necessitate an immediate shutdown. Therefore, equipment handling high-temperature, high-pressure hydrogen must undergo careful periodic inspection because of its susceptibility to hydrogen attack. This paper describes the application of an ultrasonic technique for detecting the presence of hydrogen damage in utility boiler tubes. The accuracy of the technique has been shown in laboratory tests. However, it is difficult to evaluate hydrogen attack quantitatively by this technique, because ultrasonic wave is influenced by the test conditions and the material itself.

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