- ClassNK has released safety guidelines to support the safe and secure operation of ammonia-fueled vessels.
- The guidance prioritizes seafarer safety, detailing precautions, emergency responses, and PPE requirements.
- As alternative fuel adoption increases, the guidelines aim to bridge operational knowledge gaps and will be updated with evolving research.
To support the introduction and safe handling of ammonia-fueled vessels, ClassNK has published its Guidelines for Safety Operation for Ammonia-Fueled Vessels. These guidelines aim to help ensure safe onboard practices for crews operating vessels powered by ammonia.
Focus on Seafarer Safety and Daily Operational Protocols
Top priority is given to protecting the safety and health of crew members. The guidelines outline key considerations for daily operations, including actions to take during an ammonia leak, health precautions, and requirements for personal protective equipment (PPE) and emergency gear in crises.
Addressing the Operational Knowledge Gap for Alternative Fuels
With the shipping industry’s decarbonization push, alternative fuels now represent nearly 40% of vessel orders and continue to grow. However, these fuels—such as ammonia—pose different risks than traditional heavy fuel oils, and operational knowledge remains limited.
To address this, the new guidelines consolidate the latest domestic and international findings to offer practical, field-ready information. Topics include the transportation, storage, and operational management of ammonia fuel, all tailored from a seafarer’s perspective.
Dynamic Framework for Industry Evolution
Recognizing the fast-evolving nature of the industry, the guidelines are designed to be updated flexibly in response to ongoing research, global discussions, and new findings. As part of its Transition Support Services, ClassNK reaffirms its commitment to helping stakeholders safely adopt and operate zero-emission vessels using alternative fuels.
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Source: ClassNK
