Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations

ABSTRACTThis study investigates potential risks associated with ammonia releases from a case ship to be constructed in a Korean Shipyard and operated in Korean coastal areas. The focus is on understanding how ammonia disperses from the onboard storage tank’s Vent Master and the associated toxic zone...

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Main Authors: Daejeong Kim, Byongug Jeong
Format: Article
Language:English
Published: Taylor & Francis Group 2024-04-01
Series:Journal of International Maritime Safety, Environmental Affairs, and Shipping
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/25725084.2024.2339342
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author Daejeong Kim
Byongug Jeong
author_facet Daejeong Kim
Byongug Jeong
author_sort Daejeong Kim
collection DOAJ
description ABSTRACTThis study investigates potential risks associated with ammonia releases from a case ship to be constructed in a Korean Shipyard and operated in Korean coastal areas. The focus is on understanding how ammonia disperses from the onboard storage tank’s Vent Master and the associated toxic zones. Numerical simulations using CFD tools were employed to model ammonia gas dispersion scenarios. The study revealed that if the safety valve opens, the high internal pressure of the ammonia tank could release a significant amount of ammonia through the vent mast. Thus, determining the position and height of the vent mast is crucial for safety design. Simulations showed that even if ammonia is released at sea through the vent mast, it poses minimal risk to nearby residential areas. The vent mast, positioned at least 4 m above the ship’s deck, ensured rapid gas dispersion, reducing the chance of human exposure. The findings aim to enhance the safety design and operation of ships, providing valuable reference material for policymakers, regulators, engine manufacturers, and ammonia suppliers, ultimately contributing to the establishment of safe ship design and construction practices in the future.
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spelling doaj.art-70d118b05308463f9c069b5938c6c7642024-04-09T06:32:40ZengTaylor & Francis GroupJournal of International Maritime Safety, Environmental Affairs, and Shipping2572-50842024-04-0181-210.1080/25725084.2024.2339342Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulationsDaejeong Kim0Byongug Jeong1Division of Navigation Convergence Studies, National Korea Maritime & Ocean University, Busan, South KoreaEurope-Korea Marine and Ocean Engineers Association (EKMOA), Southampton, UKABSTRACTThis study investigates potential risks associated with ammonia releases from a case ship to be constructed in a Korean Shipyard and operated in Korean coastal areas. The focus is on understanding how ammonia disperses from the onboard storage tank’s Vent Master and the associated toxic zones. Numerical simulations using CFD tools were employed to model ammonia gas dispersion scenarios. The study revealed that if the safety valve opens, the high internal pressure of the ammonia tank could release a significant amount of ammonia through the vent mast. Thus, determining the position and height of the vent mast is crucial for safety design. Simulations showed that even if ammonia is released at sea through the vent mast, it poses minimal risk to nearby residential areas. The vent mast, positioned at least 4 m above the ship’s deck, ensured rapid gas dispersion, reducing the chance of human exposure. The findings aim to enhance the safety design and operation of ships, providing valuable reference material for policymakers, regulators, engine manufacturers, and ammonia suppliers, ultimately contributing to the establishment of safe ship design and construction practices in the future.https://www.tandfonline.com/doi/10.1080/25725084.2024.2339342Ammonia dispersionammonia-fuelled shipsmaritime risk assessmentCFD simulations
spellingShingle Daejeong Kim
Byongug Jeong
Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
Journal of International Maritime Safety, Environmental Affairs, and Shipping
Ammonia dispersion
ammonia-fuelled ships
maritime risk assessment
CFD simulations
title Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
title_full Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
title_fullStr Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
title_full_unstemmed Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
title_short Investigation on toxicity of ammonia releasing from storage tank onboard through CFD simulations
title_sort investigation on toxicity of ammonia releasing from storage tank onboard through cfd simulations
topic Ammonia dispersion
ammonia-fuelled ships
maritime risk assessment
CFD simulations
url https://www.tandfonline.com/doi/10.1080/25725084.2024.2339342
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