5.—(1) This regulation applies to work with ionising radiation except—
(a)work arising from the carrying out of a registrable practice under regulation 6 or a specified practice requiring consent under regulation 7;
(b)work specified in Schedule 1; and
(c)work carried on at a site licensed under section 1 of the Nuclear Installations Act 1965.
(2) Subject to paragraph 3 of Schedule 8 (which relates to transitional provisions), an employer must not carry out work with ionising radiation to which this regulation applies unless before the first occasion of commencing such work since the coming into force of this regulation the employer has notified that work to the appropriate authority in accordance with the notification procedure approved by the appropriate authority from time to time.
(3) Where an employer has notified work in accordance with paragraph (2), the appropriate authority may, by notice in writing, require that employer to provide such additional particulars of that work as the appropriate authority may reasonably require in connection with the notification, and in such a case the employer must provide those particulars by such time as is specified in the notice or by such other time as the appropriate authority may subsequently agree.
(4) A notice under paragraph (3) may require the employer to notify the appropriate authority of any of those additional particulars before each occasion on which the employer commences work with ionising radiation.
(5) Where an employer has notified work in accordance with this regulation and subsequently ceases that work, or makes a material change in the work which would affect the particulars provided to the appropriate authority in connection with the notification, the employer must immediately notify the appropriate authority of that cessation or material change.
(6) In this regulation “appropriate authority” means—
(a)in relation to work carried on exclusively or primarily on premises which are or are on—
(i)an authorised defence site;
(ii)a new nuclear build site;
(iii)a nuclear warship site,
the ONR;
(b)otherwise, the Executive.