Integration of qualitative and quantitative risk assessment methods for gas refinery plants

Hyungjoon Yoon, Jaedeuk Park, Wonsub Lim, Kwanghee Lee, Nakki Choi, Chuljae Lee, Il Moon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


This paper focuses on the development of an integrated risk assessment system to increase the safety of gas refinery plants. This integration is important in managing the design and the operation of chemical plants and it requires significant time, effort and specialized expertise. We propose a systematic procedure to apply quantitative and qualitative hazard identification methods before constructing the refinery plants. Advantages of this assessment procedure are 1) systematic method in identifying most of the important hazards, 2) complete and rigorous analysis, and 3) reducing budget and time. The qualitative and quantitative assessment method consists of two and three steps, respectively. After these five steps, the risk of the same plant was calculated and analyzed. This method can identify risk and potential hazards from local gas refinery plants effectively and systematically. We applied the integrated qualitative and quantitative risk assessment method to remove the risk of a local gas refinery plant with 160 P&ID sheets. The result of this work confirmed that no residential population existed within the bounds of the 1×10-6 per annum risk contour. Therefore, the risk to the public from the gas refinery plants should be considered acceptable.

Original languageEnglish
Pages (from-to)1368-1374
Number of pages7
JournalKorean Journal of Chemical Engineering
Issue number7
Publication statusPublished - 2013 Jul

Bibliographical note

Funding Information:
The authors are highly thankful to the Ministry of Education (MOE) of Korea through its BK21 Program and GAS Plant R&D Center funded by the Ministry of Land, Transportation and Maritime Affairs (MLTM) of Korean Government for funding this research work.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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