ClassNK has released the ‘Guidelines for Ships Using Alternative Fuels (Edtion 2.0)’, which sets forth safety requirements for ships fuelled by methanol, ethanol, LPG, and ammonia.
In particular, specific requirements for ammonia-fuelled ships have been added to provide guidance for the design of alternative-fuelled vessels. The guidelines comprehensively describe safety requirements for methanol, ethanol, and ammonia-fuelled ships. Taking into account the risks posed by the use of alternative fuels against ships, crews, and the environment, they specify requirements for installation, controls, and safety devices to minimise those risks.
The new Edition 2.0 reflects the ClassNK’s expertise for ammonia, which is toxic to humans and corrosive to materials, gained through R&D in partnership with the industry and its design review experiences based on the guidelines. Specific requirements, including isolation distances from areas where there is a risk of ammonia release to areas that should be protected, and safety design concepts to design engines and boilers using ammonia fuel have been added to ensure the safety of ammonia-fuelled ships.
The guidelines are available to download for registered users of ClassNK’s website.