Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Toxic Concentration(T-LOC) Endpoint Distance Study for Fire Brigade Protection in Response to Chemical Accidents

화학사고 초기대응 소방대 보호를 위한 독성농도(T-LOC) 끝점거리 연구

  • Jong Chan Yun (Department of Disaster Prevention Engineering, Chungbuk National University) ;
  • Chul Hee Cho (National Fire Research Institute) ;
  • Jeong Hun Won (Department of Safety Engineering & Disaster Prevention & Department of Big Data, Chungbuk National University)
  • 윤종찬 (충북대학교 방재공학 학과간협동과정) ;
  • 조철희 (국립소방연구원) ;
  • 원정훈 (충북대학교 안전공학과)
  • Received : 2023.11.01
  • Accepted : 2023.12.13
  • Published : 2023.12.31
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Abstract

The purpose of this study is to propose a quantitative toxicity endpoint distance suitable for the initial response of firefighters by comparing and analyzing the commonly applied toxic level of concern (T-LOC), specifically emergency response planning guidelines (ERPG), acute exposure guideline levels (AEGL), and immediately dangerous to life or health (IDLH). This is to protect the fire brigade, which responds to toxic chemical accidents first during the golden time. Using areal locations of hazardous atmospheres, a damage prediction program, the amount of leakage for both acidic and basic substances, along with the endpoint distance, were analyzed for alternative accident and worst-case accident scenarios. The results showed that the toxicity endpoint distance, serving as a compromise between Level-3 and Level-2 of T-LOC, was longer than ERPG-3 and shorter than ERPG-2 with IDLH, while its values were analyzed in the order of ERPG-2, AEGL-2, IDLH, AEGL-3, and ERPG-3. It is suggested that the application of IDLH in an emergency (red card) and ERPG-2 endpoint distance in a non-emergency (non-red card) can be utilized for the initial response of the fire brigade.

Keywords

Acknowledgement

This work is partially supported by Ministry of the Interior and Safety as Human Resource Development Project in Disaster Management.

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