UN 3468 Hydrogen, in a metal hydride storage system contained in equipment UN Rec. 23rd rev. ed. (Shortinfo)

These storage systems shall always be considered as containing hydrogen.

Metal hydride storage systems installed in vehicles, vessels, machinery, engines or aircraft or in completed components or intended to be installed in vehicles, vessels, machinery, engines or aircraft shall be approved by the competent authority before acceptance for transport. The transport document shall include an indication that the package was approved by the competent authority or a copy of the competent authority approval shall accompany each consignment.