rems in 30 years from all sources other than natural background and
medical procedures.
No single type of population exposure should
take up a disproportionate share of the total of the recommended
dose limit.
For exposures from uncontrolled sources, e.g., following an
accident, ICRP identifies the term "action levels."
ae
The setting of
action levels for particular circumstances is considered to be the
responsibility of national authorities.