(1) Every licensee shall—
(a) Take all reasonable steps to ensure the safe keeping of any radioactive material for which he is responsible:
(b) Take all reasonable steps to ensure that any such radioactive material is labelled in accordance with clause 3 of Schedule 2 to these regulations, and that the provisions of subclause (2) of this regulation are complied with:
(c) Store or procure the storage, in a container of fire resistant material, of any such radioactive material that is not in use and that exceeds in quantity 100,000 times the maximum activity specified in regulation 4(1)(a) of these regulations.
(2) Every person who stores any radioactive material in any place shall, whether or not that place is within a controlled area, erect a warning sign or warning signs in accordance with clause 4 of Schedule 2 to these regulations.
(3) Subclause (2) of this regulation shall not apply if—
(a) The radioactive material is packed and labelled in accordance with the IAEA Transport Regulations or, in the case of containers temporarily holding the radioactive material, if the containers are labelled as required by clause 3 of Schedule 2 to these regulations; and
(b) The radioactive material is adequately protected against unauthorised removal.