CURRENT NCRP DOSE LIMITS

The National Council on Radiation Protection and Measurements (NCRP) is a non-profit corporation chartered by the US Congress in 1964. The recommendations of the NCRP are not themselves government regulations, however many government regulations concerning radiation are derived from NCPR recommendations and reports. The dose limits below are in the process of being incorporated into federal and state regulations.

Remember:

Effective Dose: Takes into account non-uniform exposures of the body.

The effective dose that describes a non-uniform exposure poses the same risk of cancer and genetic effects as that same dose received uniformly over the body.

Occupational Dose Limits:

50 mSv (5 rem) - annual effective dose limit

and

10 mSv (1 rem) x age (y) - cumulative effective dose limit

150 mSv (15 rem) - annual equivalent dose limit to lens of eye

500 mSv (50 rem) - annual equivalent dose limit to skin, hands, and feet

Public Dose Limits:

1 mSv (0.1 rem) - annual effective dose limit for continuous exposure

5 mSv (0.5 rem) - annual effective dose limit for infrequent exposure

50 mSv (5 rem) - annual effective dose limit to lens of eye, skin, and extremities

Embryo-fetus:

0.5 mSv (0.05 rem -- 50 mrem) -- equivalent dose limit in a month once
pregnancy is known.