Monitoring of designated areas
19.—(1) Every employer who designates an area as a controlled or supervised area shall take such steps as are necessary (otherwise than by use of assessed doses of individuals), having regard to the nature and extent of the risks resulting from exposure to ionising radiation, to ensure that levels of ionising radiation are adequately monitored for each such area and that working conditions in those areas are kept under review.
(2) The employer upon whom a duty is imposed by paragraph (1) shall provide suitable and sufficient equipment for carrying out the monitoring required by that paragraph, which equipment shall—
(a)be properly maintained so that it remains fit for the purpose for which it was intended; and
(b)be adequately tested and examined at appropriate intervals.
(3) Equipment provided pursuant to paragraph (2) shall not be or remain suitable unless—
(a)the performance of the equipment has been established by adequate tests before it has first been used; and
(b)the tests and examinations carried out pursuant to paragraph (2) and sub-paragraph (a) above have been carried out by or under the supervision of a qualified person.
(4) The employer upon whom a duty is imposed by paragraph (1) shall—
(a)make suitable records of the results of the monitoring carried out in accordance with paragraph (1) and of the tests carried out in accordance with paragraphs (2) and (3);
(b)ensure that the records of the tests carried out pursuant to sub-paragraph (a) above are authorised by a qualified person; and
(c)keep the records referred to in sub-paragraph (a) above, or copies thereof, for at least 2 years from the respective dates on which they were made.