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KR Drives IMO’s Marine Environmental Agenda on Ammonia Effluent Management and NOx Reduction Technology

13 May 2026

Korean Register (KR) announced that it is serving as the Coordinator of two International Maritime Organization (IMO) expert groups in key marine environmental areas: ammonia effluent management and response procedures for nitrogen oxides (NOx) reduction strategy failures. As international pressure

The Korean Register (KR) has officially assumed the role of Coordinator for two critical International Maritime Organization (IMO) expert groups, focusing on the complex challenges of ammonia effluent management and NOx reduction strategy failures. As the global shipping industry shifts toward ammonia as a primary alternative fuel, KR is leading efforts to establish safety protocols for potential toxic leaks. This initiative addresses urgent environmental concerns, ensuring that future vessel designs and operational procedures meet the stringent safety standards required for sustainable maritime decarbonization.

These expert groups are tasked with refining technical guidelines under MARPOL Annex VI, which governs the prevention of air pollution from ships, and the NOx Technical Code 2008. Compliance departments must monitor these developments closely, as they directly influence the certification of Selective Catalytic Reduction (SCR) systems and Exhaust Gas Recirculation (EGR) units. Failure to adhere to evolving IMO environmental regulations can lead to port state control detentions and significant operational disruptions, making these KR-led regulatory updates essential for maintaining global fleet compliance and environmental performance standards.

Chief engineers and second engineers will be most impacted by these regulatory shifts, as they oversee the daily operation and maintenance of emission control systems. These officers must prepare for updated training modules regarding ammonia handling and emergency response procedures for NOx abatement failures. Staying informed on these technical requirements is vital for ensuring engine room safety and preventing non-compliance during rigorous port inspections, ultimately protecting the vessel's operational integrity and the crew's safety on board.

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