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5.—(1) Where a material change occurs in the work with ionising radiation to which an assessment made pursuant to regulation 4(1) relates—
(a)the operator shall make a further assessment to take account of that change; and
(b)the carrier shall make or ensure that there has been made a further assessment to take account of that change.
(2) For such time as the work with ionising radiation in respect of which an assessment made pursuant to regulation 4(1) continues, the operator and carrier shall, within 3 years of the date of the last assessment (whether made in accordance with regulation 4(1), paragraph (1) or this paragraph) either—
(a)make (or, in relation to a carrier, ensure that there has been made) a further assessment; or
(b)if there is no change of circumstances which would affect the last report of the assessment required by regulation 6, sign a declaration to that effect.
Commencement Information
I1Reg. 5 in force at 20.9.2001, see reg. 1