Korea to develop global standards for discharge of toxic effluent from ammonia-fuelled ships

Classification society Korean Register (KR) said it has launched a joint working group to establish international standards for the safe discharge of toxic ammonia effluent generated from ammonia-fuelled ships.

Major Korean shipyards such as HD Hyundai Heavy Industries, HD Korea Shipbuilding & Offshore Engineering, HD Hyundai Samho, Samsung Heavy Industries, Hanwha Ocean, and the Korea Testing & Research Institute (KTR) will be part of the group. 

KR said ammonia is attracting attention as an eco-friendly alternative fuel that does not emit carbon dioxide, a greenhouse gas, but due to its strong toxicity and concerns about marine pollution, it is essential to establish separate safety standards. 

In particular, ammonia effluent generated from wet treatment systems currently has no clear treatment standards, which causes considerable technical and operational uncertainty in ship design and operation.

Accordingly, the group aims to establish international standards related to the storage, treatment, and discharge of ammonia wastewater generated from ships and to officially propose this to the International Maritime Organization (IMO) through the Korean government.

The launch of this consultative body is a follow-up measure to a proposal by KR and the Korean government to the IMO in 2024 for the need to establish safety standards for ammonia effluent, which was officially approved at the 83rd IMO Marine Environment Protection Committee (MEPC) in April 2025. The group plans to propose a draft standard to the IMO in 2026 and lead international discussions.

Kim Tae-seong, Head of the KTR headquarters, said: “We will provide reliable scientific data to establish ammonia wastewater management guidelines and treatment standards. We will actively cooperate to secure the international competitiveness of the domestic shipbuilding and shipping industries.”
Kim Kyung-bok, Vice President of KR, said: “This consultative body is a symbolic case of our shipbuilding and shipping industries joining forces to lead the establishment of international safety standards based on our country’s advanced technologies.”

“KR will continue to support the development of alternative fuel safety standards and international standardisation efforts together with our government.”

Photo credit: Korean Register
Published: 20 June, 2025