[논문]누적독성부하 산정을 통한 주민소산 전환시점 선정에 관한 연구 -인천지역을 중심으로-

이은지; 한만형; 천영우; 이익모; 황용우

doi:10.14346/jkosos.2020.35.6.15

누적독성부하 산정을 통한 주민소산 전환시점 선정에 관한 연구 -인천지역을 중심으로-
Selection of Transition Point through Calculation of Cumulative Toxic Load -Focused on Incheon Area- 원문보기

한국안전학회지 = Journal of the Korean Society of Safety, v.35 no.6, 2020년, pp.15 - 24

이은지 (인하대학교 환경.안전융합전공) , 한만형 (한국환경공단 취급시설진단부) , 천영우 (인하대학교 환경.안전융합전공) , 이익모 (인하대학교 화학과) , 황용우 (인하대학교 환경공학과)

Abstract ▼ AI-Helper

With the development of the chemical industry, the chemical accident is increasing every year, thereby increasing the risk of accidents caused by chemicals. The Ministry of Environment provides the criteria for determining shelter-in-place or outdoor evacuation by material, duration of accident, and distance from the toxic substance leak. However, it is hard to say that the criteria for determining the transition point are not clear. Transition point mean the time that evacuation method is switched from shelter-in-place to outdoor evacuation. So, the purpose of this study was to calculate appropriate transition point by comparing the cumulative toxic load. Namdong-gu in Incheon Metropolitan City was finally selected as the target area, considering the current status of the population of Incheon Metropolitan City in 2016 and the statistical survey of chemicals in 2016. The target materials were HCl, HF, and NH3. Modeling was simulated by ALOHA and performed assuming that the entire amount would be leaked for 10 min. Residents' evacuation scenarios were assumed to be shelter-in-place, immediate outdoor evacuation, and outdoor evacuation at an appropriate time after shelter-in-place. Based on the above method, the appropriate transition point from residents located in A(800 m away), B(1,200 m away), C(1,400 m away) and D(2,200 m away) was identified. In HCl, appropriate transition point was after 15 min, after 16 min, after 17 min, after 20 min in order by A, B, C and D. In HF, appropriate transition point was before 1 min or after 16 min, before 4 min or after 19 min, before 5 min or after 20 min, before 14 min or after 26 min in order by A, B, C and D. In NH3, appropriate transition point at A was before 4 min or after 16. Others are not in chemical cloud. This study confirmed the transition point to minimize the cumulative toxic load can be obtained by quantitative method. Through this, it might be possible to select evacuation method quantitatively that cumulative toxic load are minimal. In addition, if the shelter-in-place is maintained without transition to outdoor evacuation, the cumulative toxic load will increase more than outdoor evacuation. Therefore, it was confirmed that actions to reduce the concentration of chemicals in the room were necessary, such as conducting ventilation after the chemical cloud passed through the site.

주제어

표/그림 (18)

표 Table 1. Criteria for determination of shelter-in-place and outdoor evacuation
표 Table 2. 16 Outdoor evacuation target chemical
그림 Fig. 1. Distribution of factory in namdong industrial complex and distance of resident residence location from the central of complex.
표 Table 3. Calculation of storage volume
그림 Fig. 2. Visualization of residents evacuation.
표 Table 4. Leakage rate
그림 Fig. 3. Visualization of transition from indoor evacuation to outdoor evacuation.
표 Table 5. Example of indoor concentration calculation
표 Table 6. Example of outdoor concentration calculation
그림 Fig. 4. Modeling results of HCl full leak for 10 minutes at a distance of 800 meters.
그림 Fig. 5. Cumulative toxicity load graph of HCl according to transition point when HCl full leaks for 10 minutes at 800 m.
그림 Fig. 6. Modeling results of HF full leak for 10 minutes at a distance of 800 meters.
표 Table 7. Result of Modeling
그림 Fig. 7. Cumulative toxicity load graph of HF according to transition point when HF full leaks for 10 minutes at 800 m.
그림 Fig. 8. Modeling results of NH3 full leak for 10 minutes at a distance of 800 meters.
그림 Fig. 9. Cumulative toxicity load graph of NH₃ according to transition point when NH3 full leaks for 10 minutes at 800 m.
그림 Fig. 10. Heatmap of cumulative toxicity load according to transition point and distance.
표 Table 8. Appropriate evacuation methods according to the transition point

참고문헌 (15)

Ministry of Environment, 2018 Environmental Statistical Yearbook, 2019.
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B. T. Yoo, "Development of a Support System for Evacuation Plans for Toxic Gas Leakage and Dispersion from Chemical Plants", Ph. D. Thesis, Kwangwoon University, 2016.
B. M. Kim, M. S. Seo, K. S. Kim, I. M. Lee and Y. Y. Chon, "A Study on the Reasonable Selection Method of Shelter in the Event of Chemical Accident", Korean Journal of Hazardous Materials, Vol. 7, No.1, pp. 90-100, 2019.
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원문보기 상세보기
Ministry of the Interior and Safety, Administrative Districts and Population Status of Local Governments, 2017.
Korea Meteorological Adminstration, Certificate of Meteorological Phenomena, 2020.
National Institute of Chemical Safety, ALOHA User Guide, 2015.
S. W. Park and S. H. Jung, "Recommended Evacuation Distance for Offsite Risk Assessment of Ammonia Release Scenarios", J. Korean Soc. Saf., Vol. 31, No. 3, pp. 156-161, 2016.

원문보기 상세보기
National Institute of Chemical Safety, Technical Guidelines for Selecting Accident Scenarios, 2018.
Korean Institute of Architectural Sustainable Environment and Building Systems, Standard for Confidential Performance of Buildings, 2013.
Ministry of Culture, Sports and Tourism, The Survey of National Physical Fitness, 2017.
The Korea Occupational Safety and Health Agency (KOSHA), KOSHA Code(P-88-2012), "Guidelines for Evaluating the Impact of Accident Damage", 2012.

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