C : C Yo 21 practices that add to natural background radiation. These dose limitations exclude exposures received in the course of medical procedures, (These same qualifications with regard to natural background and medical procedures are applied to ofSandNOR recommendations, ) ICRP developed the concept of “acceptable risk." Unless man wishes to dispense with activities involving exposures to ionizing radiation, he must recognize that there is a degree of risk and limit the radiation dose toa level at which the assumed risk is deemed to be acceptable to the indivudal and to ‘Society because of EN olen : TaSS *. ts, Ey aie the’ henefite “Gerived fron’ such Sanggne For planned exposures of individuals and populations, the J.CRP ae vt oo “has. recommended .the term "dose. Limit,” 34.00 potga 2 coeaiea Te geo oa note 2 eh r ert It is not desirable to expose members of the public to doses as nd ghas ‘those’colisidered® to be”“gcheptable ‘Forradiation: workers07 TF 8ee because children are involved, members of the public:do not make the : “TBhoiceto dé exposed,and members of the public -are ‘not subject’ to: selection, supervision and monitoring, and are exposed to the risks of their own occupations. For planning purposes, dose limits for members of the public are set a factor of ten below those for radiation workers. The dose limits for members of the public are a somewhat theoretical concept intended for planning purposes. It will seldom be possible to ensure that no single individual exceeds this dose limit. Even when individual exposures are sufficiently low so that the risk to the individual is acceptably small, the sum