Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

Purpose: Chemical substances are used in a variety of ways throughout industry. These chemical substances are transported for uses, and accidents related to their transport continue to occur more than 10 times a year. Recently, an accident occurred during the transport of hydrochloric acid at Jukrim JC. Therefore, it is necessary to predict the damage area and establish prevention and protection alternatives. Method: Damage ranges analysis is affected by weather conditions and leakage amount. Weather conditions are based on monthly weather conditions as of 2023 and weather conditions on the day of the accident. Additionally, the leakage amount was applied to the capacity of the hydrochloric acid container in the event of an actual accident. These were combined to develop a total of 96 accident scenarios. The developed scenario analyzed the damage range by PAC level using ALOHA Dispersion Models. Result: In the event of an accident, At the time of the accident, PAC-1, PAC-2, and PAC-3 were 317 m, 86 m, and 35 m, respectively, based on the accident point. A monthly analysis showed that damage was greatest in July under the lowest temperature conditions, and greatest in August under the highest temperature conditions. In addition, the overall expected damage range was shown to depend on the amount of leakage and temperature. However, in January and December, the temperature is low, so evaporation of substances does not occur properly. There was no significant difference in the damage area regardless of the amount of leakage. Conclusion: In the event of an accident, the maximum damage area would be 4.2 km. At the time of the accident, sensory irritation occurred in nearby villages. However, if an accident occurs in the city center, large-scale damage is expected. It is necessary to prevent accidents in advance and take immediate action in case of a leak.