This report is a compendium of information for medical physicists involved in specifying shielding requirements for x-ray facilities. The report is a result of a joint effort of a working party from the British Institute of Radiology and the Institute of Physics and Engineering in Medicine. The report provides an overview of different approaches to shielding that have evolved since the publication of the National Council on Radiation Protection and Measurements (NCRP) report 49 in 1976.

BIR: British Institute of Radiology and the Institute of Physics and Engineering in Medicine.