Bureau Veritas publishes rules and guidelines on ammonia

Bureau Veritas (BV), a company specialized in the testing, inspection and certification, has released an Ammonia-Prepared notation and has developed a rule note for ammonia as fuel to support ship owners, designers, shipyards and charterers in advancing their journeys toward using ammonia and a zero carbon future.

Ammonia-Prepared is applicable to new-builds and certifies that a ship has been designed and constructed to later be converted to use ammonia as fuel. The notation targets the spaces and structural components that will accommodate future ammonia fuel tanks, fuel handling equipment and ammonia vapor treatment installations. Ammonia-Prepared also covers specific requirements for the conversion of engines and boilers from using fuel oil, LNG or multiple fuels to ammonia. The notation was developed in collaboration with different stakeholders including ship owners, equipment makers, designers and shipyards building on our expertise across the value chain.

Read more: MHI and project for safe use of ammonia as shipping fuel

Ammonia-prepared is a prelude to a full Rule Note on ammonia as fuel: NR 671. It will primarily concern the safety aspects of managing ammonia in storage tanks, fuel-piping systems and during bunkering.

Through these notation and guidelines, Bureau Veritas helps to address the challenges of using ammonia in the shipping industry which includes:

  • Its lower energy density compared to other fuels – about half of LNG and about one-third of fuel oil.
  • Its comparatively poor combustibility properties.
  • Its toxicity, requiring stringent measures to protect crew and/or passengers from exposure.

Source: Bureau Veritas – Marine & Offshore