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Improving Applicability of Incident Event and Frequency Analysis for Off-site Risk Assessment and Safety Enhancement in Korea

  • Crisisonomy
  • Abbr : KRCEM
  • 2018, 14(9), pp.87-99
  • DOI : 10.14251/crisisonomy.2018.14.9.87
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general
  • Received : August 22, 2018
  • Accepted : September 18, 2018
  • Published : September 30, 2018

Sol Lim Kwak 1 Jin Seon Lee 1 Jung Kon Kim 1 Phark Chuntak 2 Seungho Jung 2 Ji Sung Ryu 1

1화학물질안전원
2아주대학교

Accredited

ABSTRACT

Both the Layer of Protection Analysis (LOPA) and the Oil & Gas Producer (OGP) have mainly been used to calculate the incident frequencies in ORA (Off-site Risk Assessment). Because the incident frequencies in OGP are calculated under the assumption of well-equipped safety devices, they are a lot lower than those of LOPA. Furthermore, the definition of incident event is not clear and the incident frequencies of LOPA used in ORA are conservatively evaluated compared to other methods. In order to solve these problems, we investigated the incident frequencies of FRED (Failure Rate of Equipment Data) and TNO Purple book and compared them with the incident frequencies of the current domestic ORA. Following that, we adjusted the incident events in the domestic method using LOPA incident events to reduce the gap with other methods. In addition, because the currently-used IPLs are limited, we suggested ten IPLs (Independent Protection Layers) for current applications and ten IPLs for future applications based on the analysis of CCPS guidelines, FRED, and RIVM manual.

Citation status

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