As the chemical industry becomes more advanced, the awareness of chemical accidents is rising, and legal systems for chemical safety management are strengthened. In this study, quantitative risk assessment of liquid chlorine leak was conducted.
Risk assessment was performed in the order of frequency analysis, consequence analysis, and risk calculation. The individual risk was presented in the form of contour lines. The social risk was expressed by the FN curve. The risk of day and night was in an unacceptable area, so it was required to mitigate risk. Therefore in-building, which could trap the pool, was selected as a risk mitigation measure. As a result of the cost benefit analysis, it was concluded that this measure should be reasonably implemented.

Abstract
 1. 서 론
 2. 이론적 배경
  2.1 정량적 위험성 평가
  2.2 비용편익 분석
 3. 정량적 위험성 평가
  3.1 정량적 위험성 평가 절차
 4. 위험경감조치 선정 및 효과
  4.1 위험경감조치 선정
  4.2 위험경감조치 효과
 5. 비용편익 분석
  5.1 PF 및 VPF
  5.2 위험경감조치에 대한 비용 산정
 6. 결론
 6. References

• 이주연(인하대학교 대학원 환경안전융합전공) | Ju-Youn Lee (Department of Environment & Safety Engineering, INHA University)
• 천영우(인하대학교 대학원 환경안전융합전공) | Young-Woo Chon (Department of Environment & Safety Engineering, INHA University) Corresponding Author
• 황용우(인하대학교 대학원 환경안전융합전공) | Yong-Woo Hwang (Department of Environment & Safety Engineering, INHA University)
• 이익모(인하대학교 대학원 환경안전융합전공) | Ik-Mo Lee (Department of Environment & Safety Engineering, INHA University)