Regulation 20 Transport Index limits
No person shall consign for carriage—
unpackaged LSA-I or SCO-I; or
other radioactive material in a package, overpack, freight container, tank container, tank wagon or wagon,
unless the Transport Index for that item and for the whole consignment has been determined in accordance with paragraph 17 of the Approved Document.
Subject to regulation 10, no person shall cause or permit to be carried any package or overpack where the Transport Index for that item is greater than 10, except where that item is being carried under exclusive use.
No person shall cause or permit to be carried any radioactive material, other than a consignment consisting entirely of LSA-1, in a freight container, tank container, tank wagon or wagon where the sum of the Transport Indexes in the freight container, tank container, tank wagon or wagon concerned is greater than 50, except where that freight container, tank container, tank wagon or wagon is under exclusive use.
No person shall cause or permit to be carried in any freight container, tank container, tank wagon or wagon under exclusive use any packages or overpacks of fissile material where the sum of the Transport Indexes in the freight container, tank container, tank wagon or wagon concerned is greater than 100.
No person shall cause or permit to be carried in an overpack any packages of fissile material for which the Transport Index for nuclear criticality control exceeds 0.