MSC 97 adopted interim recommendations for carriage of liquefied hydrogen in bulk, which have been developed as the International Gas Carrier (IGC) Code does not specify requirements for the carriage of liquefied hydrogen in bulk.
The recommendations are based on the results of a comparison study of similar cargoes listed in the IGC Code, e.g. liquefied natural gas and are intended to facilitate the establishment of a tripartite agreement for a pilot ship that will be developed for the research and demonstration of safe long-distance overseas carriage of liquefied hydrogen in bulk.
The interim recommendations contain general requirements and special requirements for the carriage of liquefied hydrogen in bulk by ship, such as the provision of portable hydrogen detector for each crew member working in the cargo area; selection of fire detectors for detecting hydrogen fire; and appropriate safety measures to prevent formation of an explosive mixture in the case of a leakage of hydrogen.
Source: IMO