친환경 연료 선박 사고에 따른 대기 확산 및 재난 대응 모델링 연구
Disaster-responsive Air Diffusion Modeling in Case of Eco-Friendly Fuel Ship Accidents
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초록
해양환경 규제를 준수하고 탄소 중립을 달성하기 위해 국제해사기구(IMO)는 ‘2023 온실가스 감축 전략’을 수립하여 약 2050년까지 온실가스 배출량을 감축하기 위한 노력을 진행 중이다. 이에 친환경 선박 관련 시장은 확대되고 있으며 우리나라도 친환경 선박 도입에 대해 논의하고 있다. 그러나 친환경 선박 사고에 대한 대응 계획은 아직 확보되지 않은 실정이다. 친환경 선박 연료 사고 시 빠른 대응 및 안전성 확보를 위해 해당 상황을 모사하는 것은 필요하다. 본 연구는 최근 국내에서 발생한 광양항 LNG 벙커링 사고사례를 참고하였으며, PM2.5 전구물질이자 친환경 선박 연료 중 하나인 암모니아를 선박 연료로 가정하여 친환경 선박 사고상황을 모사하였다. 모듈 Factor의 조정 및 배출량 데이터에 사용에 의한 확산 결과를 바람 장 조건 변화에 따라 분석하였고 인체에 미치는 영향을 파악하기 위해 MSDS 노출 기준 및 IRIS 흡입농도 기준과 비교하였다. 본 연구가 증가하는 친환경 연료 수요에 따라 앞으로 발생할 수 있는 친환경 선박 사고 대응에 도움 될 것으로 예상한다.
Abstract
To comply with marine environmental regulations and achieve Net-Zero targets, the International Maritime Organization developed the "2023 Greenhouse Gas Reduction Strategy". Therefore, the eco-friendly ship market is continuously growing, and recently regarding the implementation of such vessels also growing in Korea. In light of this situation, it will be necessary to undergo simulations of eco-friendly fuel ship accidents for expedient response readiness. This study simulates a hypothetical ammonia leakage accident, utilizing the details of an actual LNG bunkering accident, which happened at Gwangyang port in Korea recently. Ship fuel was assumed to be ammonia - which is a precursor of PM2.5 and one of the eco-friendly ship fuels. The results of model factor adjustment and emission data application were analyzed for diffusion under varying wind field conditions. Additionally, the results were compared with the inhalation concentration standards and exposure limits to assess the human health impacts. This study is expected to contribute to eco-friendly fuel ship accident response as the demand for eco-friendly fuels increases.
참고문헌 (10)
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