Ionizing Radiation - Introduction to Ionizing Radiation - Maximum Permissible Dose Equivalent for Occupational Exposure | Occupational Safety and Health Administration

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Maximum Permissible Dose Equivalent for Occupational Exposure

Combined whole body occupational exposure
Prospective annual limit	5 rems in any 1 yr
Retrospective annual limit	10-15 rems in any 1 yr
Long-term accumulation	(N-18) x5 rems. where N is age in yr

Skin	15 rems in any 1 yr
Hands	75 rems in any 1 yr (25/qtr)
Forearms	30 rems in any 1 yr (10/qtr)
Other organs, tissues and organ systems
Fertile women (with respect to fetus)	0.5 rem in gestation period

Population dose limits	0.17 rem average per yr
(Reprinted from NCRP Publication No. 43, Review of the Current State of Radiation Protection Philosophy, 1975)