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Assessment of Gas Leakage for a 30-inch Ball Valve used for a Gas Pipeline

가스 파이프라인용 30인치 볼 밸브의 누설량 평가

  • KIM, CHUL-KYU (Environmental and Plant Engineering Research Institute, Korea Institute of Civil Engineering and Build Technology) ;
  • LEE, SANG-MOON (Environmental and Plant Engineering Research Institute, Korea Institute of Civil Engineering and Build Technology) ;
  • JANG, CHOON-MAN (Environmental and Plant Engineering Research Institute, Korea Institute of Civil Engineering and Build Technology)
  • Received : 2016.03.27
  • Accepted : 2016.04.30
  • Published : 2016.04.30

Abstract

The purpose of this study is to evaluate the gas leakage for a 30-inch ball valve. The ball valve was designed and manufactured for a natural gas transportation through a long-distance pipeline mainly installed in the permafrost region. The gas leakage assessment is based on the pressure testing criteria of international standards. Pressure conditions of the gas leakage test was employed 70 bar, 100 bar, and 110 bar. The amount of the gas leakage at each pressure condition was small and had a value under the pressure testing criteria, ISO 5208. Gas leakage with respect to the test pressure was predicted by the polynomial curve fitting using the experimental results. It is found that the gas leakage rate according to the pressure is proportion to a second order curve.

Keywords

References

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Cited by

  1. Evaluation of Numerical Model of a Ball Valve used for a Gas Pipeline vol.27, pp.6, 2016, https://doi.org/10.7316/KHNES.2016.27.6.764
  2. Performance analysis of a ball valve used for gas pipelines by introducing nondimensional parameters vol.11, pp.1, 2019, https://doi.org/10.1177/1687814018823350