The dose limits for a radiation worker who has notified her employer that she is pregnant are for external radiation exposure, an equivalent dose to the surface of her abdomen for the remainder of her pregnancy of 2 millisieverts; and
for internal radiation exposure, 1/20th of the Annual Limit on Intake (ALI) determined by reference to
the values set out in the publication entitled "Dose Co-efficients for Intakes of Radionuclides by
Workers" being ICRP Publication 68 published for the International Commission on Radiological
Protection.
The dose limit in a single planned special exposure referred to in regulation 24 (2) is an effective
dose of 100 millisieverts.
current annual permissible maximum of 20 mSv.
Q = 1 / Maximum value of Z permissible R = 1/ Maximum value of u permissible
No.
20
.08%
5 microgram per litre
20
For ingestion the maximum permissible intake is 7 picograms.
determined by federal statute in the case of FHA loans
5 rems/year
The maximum permissible concentration of mercury in air is 0,1 mg/m3.
Permissible Exposure Limits (PELs) are maximum permitted exposure levels established by the US Occupational Safety and Health Administration (OSHA).