Regulation 35
1. During storage in transit packages, overpacks, freight containers and tanks shall be sufficiently segregated from:
(a)undeveloped photographic film; and
(b)other dangerous goods.
2. In the case of undeveloped photographic film the basis for determining segregation distances shall be that the radiation exposure of undeveloped photographic film due to the transport of radioactive material be limited to 0.1 mSv per consignment of such film.
3. In the case of other dangerous goods segregation shall comply with the [relevant UK transport regulations for dangerous goods].
4. The number of category II-YELLOW and category III-YELLOW packages, overpacks, tanks and freight containers containing fissile material stored in any one storage area, such as a transit area, terminal building, store-room or assembly yard, shall be so limited that the total sum of the Transport Indexes (TI) in any individual group of such packages, overpacks, tanks or freight containers does not exceed 50. Groups of such packages, overpacks, tanks and freight containers shall be stored so as to maintain a spacing of at least 6 metres from other groups of such packages, overpacks, tanks or freight containers.
5. Where the Transport Index (TI) of a single package, overpack, tank or freight container exceeds 50 or the total Transport Index (TI) on board a conveyance exceeds 50, storage shall be such as to maintain a spacing of at least 6 metres from other groups of packages, overpacks, tanks or freight containers or any other conveyance carrying radioactive material.
6. Paragraphs 4 and 5 do not apply to consignments in which the radioactive contents are LSA-I materials.
7. Except in the case of shipment under special arrangement, mixing of packages of different kinds of radioactive material, including fissile material, and mixing of different kinds of packages with different Transport Indexes (TI) is permitted without the specific approval of the Secretary of State. In the case of shipment under special arrangement, mixing shall not be permitted except as specifically authorised under the special arrangement.