IACS Publishes Safety Framework for Ammonia Release Mitigation Systems on Shipsby Ship & Bunker News TeamNew unified requirement sets out how ammonia leak-control systems should be designed, tested and approved. File Image / PixabayThe International Association of Classification Societies (IACS) has published a new unified requirement, UR H2, establishing a safety framework for ammonia release mitigation systems on ammonia-fuelled vessels. UR H2 defines how these systems should be designed, installed, tested and certified to manage ammonia releases during normal operations and foreseeable accident scenarios, IACS said in an email statement on Thursday. The framework recognises multiple mitigation concepts, including dissolution tanks, scrubbers, combustion units and dilution systems, provided they meet defined safety goals. In addition, UR H2 establishes expectations for workshop and onboard testing, certification and operational readiness to ensure systems remain effective in service.