Radiation protection and safety guide no. GRPB-G--3: dose limits

This Guide specifies the ionizing radiation dose limits including conversion coefficients for effective dose. (a).The dose limits specified apply to exposures attributable to practices, with the exception of medical exposures and exposures from natural sources where guidance levels have been prescribed. (b)Subject to the requirements in this guide, for exposure to radon at or above an average annual concentration of 1000 Bq.m-3 of air, of radon progeny in a work place, the dose limits for occupational exposure and the relevant requirements in this guide shall apply. (c)The dose limits are not relevant for the control of potential exposures. (d)The dose limits are not relevant for decisions on whether and how to undertake an intervention, but workers undertaking an intervention shall be subject to t he relevant requirements