Kim Min-Uk, Byeon Sang-Hoon
Department of Health Science, Korea University, Seoul, Republic of Korea.
Integr Environ Assess Manag. 2018 Mar;14(2):205-211. doi: 10.1002/ieam.2019. Epub 2018 Jan 17.
We investigated the characteristics and limitations in the event of hydrofluoric acid (HF) leakage by comparing and analyzing the offsite consequence analysis (OCA) tools based on the chemical plant operating conditions. We reviewed the tools Korea Offsite Risk Assessment (KORA) from South Korea and Risk Management PlanComp (RMPComp™) and Areal Location of Hazardous Atmospheres (ALOHA) from the United States. The scenario studied was based on a leak event from a 50% HF aqueous solution storage tank, and the operating conditions taken into consideration were the operating temperature and dike installation conditions. The results from the OCA differed; KORA presented a smaller range of offsite impact than did ALOHA. The offsite impact ranges of KORA and ALOHA increased as the operating temperature and dike installation area increased. However, RMPComp differed greatly in its offsite impact range results in the operating temperature range of 25 °C to 30 °C. Moreover, in the alternative scenario, a limitation existed in that the offsite impact range was not changed by the dike installation conditions. The offsite impact range analyzed via KORA and ALOHA reflected the reality of an HF leak accident better than that analyzed via RMPComp. Therefore, it is more reasonable to use KORA and ALOHA instead of RMP*Comp in OCA. Moreover, users should realize that ALOHA has a somewhat wider range of offsite impact than KORA does in OCA. The separation distance from the storage tank when installing a dike is effective between 1 and 1.5 m in consideration of securing the minimum workspace for workers. Integr Environ Assess Manag 2018;14:205-211. © 2017 SETAC.
通过基于化工厂运行条件对场外后果分析（OCA）工具进行比较和分析，我们研究了氢氟酸（HF）泄漏事件中的特征及局限性。我们评估了韩国的韩国场外风险评估（KORA）工具以及美国的风险管理计划Comp（RMPComp™）和危险大气区域定位（ALOHA）工具。所研究的场景基于一个50%氢氟酸水溶液储存罐的泄漏事件，考虑的运行条件为运行温度和堤坝安装条件。OCA的结果存在差异；KORA显示的场外影响范围比ALOHA小。KORA和ALOHA的场外影响范围随着运行温度和堤坝安装面积的增加而增大。然而，RMPComp在25°C至30°C的运行温度范围内，其场外影响范围结果差异很大。此外，在替代场景中，存在一个局限性，即场外影响范围不会因堤坝安装条件而改变。通过KORA和ALOHA分析的场外影响范围比通过RMPComp分析的结果更能反映氢氟酸泄漏事故的实际情况。因此，在OCA中使用KORA和ALOHA比使用RMP*Comp更合理。此外，使用者应认识到在OCA中，ALOHA的场外影响范围比KORA稍广。考虑到为工人确保最小工作空间，安装堤坝时与储存罐的分隔距离在1至1.5米之间是有效的。《综合环境评估与管理》2018年；14：205 - 211。©2017 SETAC。
