reg 8 Disapplication of dose limits
(1) Regulation 12 of the 2017 Regulations does not apply to an emergency worker, where that emergency worker— (a) is engaged in preventing the occurrence of a radiation emergency; or (b) is acting to mitigate the consequences of a radiation emergency. (2) An emergency worker may be exposed to an effective dose not exceeding 500mSv whilst they are undertaking the activities set out in sub-paragraph (1).