The purpose of this task was to define the desktop studies, present the preliminary concept design analysis for each desktop study and develop a data template stipulating the data required for the desktop studies throughout the project.
A feasibility analysis was performed per investigated ship (containership, tanker, bulk carrier, RoPax, short sea ferry) to:
- estimate the amount of ammonia that could be stored onboard each vessel
- the potential storage tanks type
- the potential storage tank location.
The preliminary conceptual design was performed with considerations of the technical and regulatory feasibility of each solution proposed for the desktop studies and following the safety and risk assessment findings as well as the impact each solution will have on the ship payload.
A preliminary conceptual design was performed to identify the most suitable arrangement per ship. During the analysis, the available space and required quantity of ammonia onboard according to the operating profile of each vessel were considered. The main objective of the analysis was the identification of the required amount of ammonia, while at the same time to minimize the impact on-board in terms of modifications for the retrofit cases.
A variation of storage tanks was considered either on-deck or hull-integrated solutions, with steel and composite storage tanks. Furthermore, for one desktop study, the possibility of ammonia use for on-board production of hydrogen or direct use for fuel cells was investigated. Finally, one vessel was considered as new build.
The main risk issues that were identified at this stage will be discussed during a HAZID workshop. Finally, the findings of this work are significant for the design of the tank storage systems and auxiliaries for the desktop studies as well as will serve as a base for the discussion regarding the modularity and scalability potential of ammonia storage tanks.
NH3CRAFT is a Co-funded by the European Commission Project. UK participation in NH3CRAFT Project is funded by UK Research and Innovation(UKRI) under the UK government’s Horizon Europe guarantee [grant numbers 10038548 and 10037828]