Guidelines for new alternative fuels released by ClassNK

Malcolm Latarche
Malcolm Latarche
ShipInsight

14 June 2019


Japanese classification society, ClassNK has released a new publication titled Guidelines for Ships Using Low-Flashpoint Fuels (Methyl/Ethyl Alcohol / LPG).

To meet impending regulation on sulphur and other emissions, new duels such as LPG, methanol and ethanol have been proposed in addition to LNG. LNG use is already regulated by the IMO’s IGF Code.

These alternative fuels have lower flashpoints compared to traditional fuels, therefore particular attention needs to be given to ensuring adequate safety precautions when using low-flashpoint fuels in order to decrease the potential risk of fire and explosions that may arise as a result of fuel leakage onboard the ship. International safety requirements for low-flashpoint fuels have been discussed at IMO and as a result, the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code) has been adopted and enforced. The current code however, does not address specific regulations for alternative fuels other than LNG.

ClassNK released the Guidelines for Ships Using Low-Flashpoint Fuels (Methyl/Ethyl Alcohol / LPG) which outline safety requirements for other viable alternative fuels besides LNG, based on the latest technology and regulation trends in order to promote the design of alternative fuelled ships. The guidelines divide targeted vessels into three categories: ships using methyl/ethyl alcohol as fuel, ships fuelled by LPG, and liquid gas carriers fuelled by LPG. They take into consideration the properties of each fuel type and ship regulations and indicate safety requirements for the arrangement and installation of the low-flashpoint fuel related systems for minimizing risks to vessels, crew, and the environment.

The guidelines reflect current trends and will be amended periodically in accordance with any changes in the IGF Code during future IMO discussions and the rapid development of new technologies.

Speaking on the occasion, Hayato Suga, Corporate Officer and Director of Plan Approval and Technical Solution Division said, “In addition to LNG, low-flashpoint fuels like Methyl/Ethyl Alcohol and LPG are providing ships with alternative fuel options that have diverse characteristics in terms of environmental performance, availability, price, and more. Regardless of the choice, adequate safety measures are essential. Our latest guidelines have incorporated regulatory trends and our expertise proposes the appropriate requirements tailored to Methyl, Ethyl Alcohol, and LPG respectively. I hope they will be well utilised for the efficient design and construction practice of ships using those fuels”.