Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Risk Analysis for Installation Types of Pressure Safety Valve used in the High-pressure Gas Facility

고압가스 사용시설 내 안전밸브 설치유형별 리스크 분석

  • Kim, Myung-Chul (Department of Safety Engineering, Korea National University of Transportation) ;
  • Woo, Jeong-Jae (Department of Safety Engineering, Korea National University of Transportation) ;
  • Lee, Hyung-Sub (Department of Safety Engineering, Korea National University of Transportation) ;
  • Baek, Jong-Bae (Department of Safety Engineering, Korea National University of Transportation)
  • 김명철 (한국교통대학교 안전공학과) ;
  • 우정재 (한국교통대학교 안전공학과) ;
  • 이형섭 (한국교통대학교 안전공학과) ;
  • 백종배 (한국교통대학교 안전공학과)
  • Received : 2017.03.16
  • Accepted : 2017.08.19
  • Published : 2017.08.31
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Abstract

This study investigated the probability of possible accident through qualitative and quantitative analysis of the pressure safety valve types installed in facilities using high pressure gas to compare the installation domestic and foreign pressure safety valve standards sought the safety characteristics and safety improvement direction accordingly. The three types are the case where the shut-off valve is not installed at the front of the PSV (Case A), If a shut-off valve is installed at the front of the PSV for inspection (Case B) and If a shut-off valve is installed in front of PSV (C.S.O), PSV is installed in parallel (Case C). Three types of cases were compared with FTA and HAZOP. The results of study of the possible accidents due to over-pressure safety valve installation type, used in a high-pressure gas facilities was shows in the following order Case B > Case A > Case C. The results of analysis through FTA was in order to protect the reservoir for the possible occurring of accident the safety valve installation is depend on its type. In the FTA analysis, defects in the device itself which attached to the storage tank as a substitute for analysis of the probability of operator mistakes was Case B with as high as $2.01{\times}10^{-6}$. Depending on the type of installation analysis of Case B in order to ensure safety is prohibited to install shut-off valve and believes that mandatory regulations are needed. Rationally installing of pressure safety valve in the high pressure using facilities will be expected to improve the industrial safety from severe accidents such as high-pressure gas fire explosion.

Keywords

References

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