Wärtsilä Ammonia Fuel Supply Systems (AFSS)

For non-gas carriers (IGF-coded ships) the system can be configured with dedicated fuel storage tank(s) optimized for the trade of the vessel. The Ammonia fuel tank(s) is loaded through dedicated bunkering lines, or in case of a Ammonia/LPG carrier reloaded from the cargo tanks. From the fuel tank(s), the Ammonia is conditioned and prepared as fuel. A system consisting of pumps and heat exchanger is used to supply the engine with a stable and reliable fuel flow, at the correct pressure and temperature. The AFSS systems are equipped with proven components, including the necessary purge gas treatment system. Due to the need for high cleanness of the fuel, proper filtering upstream is installed and embedded in the system. The components are high quality parts, selected to ensure a high reliability. Both low- and high-pressure pumps are fitted with standby units; 2x100% pumping capacity. Unique catch tank design with Ammonia Release Mitigation System is minimizing the fuel gas release to atmosphere, ensuring emission reductions.