According to special provision 356, metal hydride storage systems intended to be installed in wagons, vehicles, vessels, machinery, engines or aircraft shall be approved by the competent authority of the country of manufacture *) before acceptance for carriage. The transport document shall include an indication that the package was approved by the competent authority of the country of manufacture or a copy of the competent authority of the country of manufacture *) approval shall accompany each consignment.

__________
*) If the country of manufacture is not an RID Contracting State, the approval shall be recognized by the competent authority of an RID Contracting State.