Paragraph 4 Common provisions
Where the package or overpack contains any radioactive material listed in paragraph 20 of the Approved Document in respect of which a subsidiary hazard is specified in that paragraph, the appropriate subsidiary hazard sign, determined in accordance with regulation 5 of the CDGCPL Regulations and conforming to the specification in Schedule 2 to those Regulations shall—
(a)
be affixed to the package or overpack concerned, adjacent to each danger sign; and
(b)
have sides which measure not less than 100 mm.