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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 3, 2015
Accepted March 15, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Hydrogen Fluoride (HF) 누출 사고 시 피해 범위 예측 및 장외영향평가를 위한 모델링 활용 방법

Offsite Consequence Modeling for Evacuation Distances against Accidental Hydrogen Fluoride (HF) Release Scenarios

김정환 정승호^†

Jeonghwan Kim Seungho Jung^†

아주대학교 환경안전공학과, 16499 경기 수원시 영통구 월드컵로 206

Department of Environmental and Safety Engineering, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon, Gyeonggi, 16499, Korea

Korean Chemical Engineering Research, August 2016, 54(4), 582-585(4), 10.9713/kcer.2016.54.4.582 Epub 2 August 2016

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Abstract

ALOHA, PHAST 등의 사고영향평가 프로그램들을 활용하여 전기·전자 등의 산업 분야에서 많이 쓰이며 인체에 유독한 HF 가 누출되는 사고의 발생 시 대피해야 하는 초기 이격거리에 대한 연구를 수행하였다. 다양한 공정조건과 상태로 저장되어 있는 HF의 사고시나리오를 간단하게 정의하기는 어렵지만 화학물질안전원의 지침대로 10분 내 총 저장량 누출을 최악의 시나리오, 결속된 배관의 일부 파열을 대안의 시나리오로 하여 비상상황을 가정하였다. 그로부터 사고모델링의 시작인 누출속도 산정을 한 후 보수적으로 확산모델링을 적용하여 밤과 낮의 대표적인 기상상태에 따라 일반적인 대피거리로 권고되는 ERPG-2 농도가 도달하는 끝점거리를 구하여 현장에서 신속하게 쓸 수 있는 간단한 그래프와 같은 형태로 제시하였다. 이는 유사시를 대비한 사전적인 성격의 그래프로 화학물질 누출사고 시 신속한 비상대응계획을 수립하는 데 도움이 될 것이다.

This study intends to provide initial evacuation distances for the public in case of accidental releases of hydrogen fluoride (HF). HF is a very toxic chemical that is widely used in the chemical, electrical, and electronics industries. Consequence modeling programs, such as ALOHA and PHAST, were used to help formulate a contingency plan in case of an HF leak. For the purpose of this study, the release of entire quantity of HF in 10 min is defined as a worst-case scenario and the release from a partial line rupture is used as an alternative case scenario as National Institute of Chemical Safety (NICS) guidelines. Once the discharge rates were calculated based on the scenarios, the ERPG-2 endpoint distances have been obtained for representative daytime and nighttime weather conditions. This paper presents graphs that can be used to enact swift evacuation orders and emergency response plans in the case of accidental releases of HF.

Keywords

Offsite consequence modeling ALOHA PHAST ERPG-2

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