The IMO has established interim guidelines to facilitate the use of ammonia as a marine fuel, but international standards governing the safe treatment and discharge of toxic ammonia effluent generated during vessel operations have yet to be developed. Unlike typical aqueous ammonia, this effluent exhibits different physical and chemical characteristics, creating uncertainty for ship design, operation, and environmental management.
In response, Korean Register and the Ministry of Oceans and Fisheries launched an international working group in June 2025 to develop safety management and marine discharge standards for ammonia effluent. The group plans to submit draft international standards to the IMO Sub-Committee on Pollution Prevention and Response over 2026 and 2027.
The Korean government delegation will underscore the urgency of establishing guidelines for ammonia effluent management and marine discharge standards at the upcoming IMO PPR session, proposing the formation of an Expert Group for in-depth technical discussions. This initiative aims to address the lack of international standards for safe treatment and discharge of toxic ammonia effluent, ensuring a more sustainable and environmentally-friendly maritime industry.
The development of these standards will also facilitate the widespread adoption of ammonia as a marine fuel, reducing greenhouse gas emissions and promoting energy security. With the IMO's interim guidelines in place, the establishment of comprehensive international standards for ammonia effluent management is crucial to ensure safe and responsible vessel operations.
The Korean working group's efforts will provide a framework for the global maritime community to adopt best practices and minimize environmental risks associated with ammonia-based marine fuels. As the industry continues to evolve, it is essential that we prioritize environmental sustainability and safety in our standards and regulations.
The development of international standards for ammonia effluent management is a critical step towards ensuring the safe and responsible adoption of this emerging fuel source. By establishing clear guidelines and best practices, the global maritime community can minimize environmental risks and promote energy security, ultimately contributing to a more sustainable future.
