Paragraph 19 Special provisions
Where the freight container, tank container, tank wagon or wagon is being used for the carriage of 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 freight container, tank container, tank wagon or wagon concerned adjacent to each danger sign; and
(b)
have sides which measure not less than 250 mm.