Examples of Airborne radioactivity area in a sentence
In the case of a high radiation area es- tablished for a period of 30 days or less, such control device is not required.(d) Airborne radioactivity area.
Airborne radioactivity area" means a room, enclo- sure, or operating area in which airborne radioactive material exists in concentrations (a) in excess of the derived air con- centration (DAC) specified in WAC 246-221-290, Appendix A, or (b) to ((such a)) the degree that an individual present in the area without respiratory protective equipment could exceed, during the hours an individual is present in a week, an intake of 0.6 percent of the annual limit on intake (ALI) or twelve DAC-hours.
The words ‘‘Grave Danger, Very High Radi- ation Area’’ shall be posted at each very high radiation area.(d) Airborne radioactivity area.
Airborne radioactivity area -- A room, enclosure, or area in which airborne radioactive materials, composed wholly or partly of licensed material, exist in concentrations -(1) In excess of the derived air concentrations (DACs) specified in 10 CFR 20.1001-20.2401, or(2) To such a degree that an individual present in the area without respiratory protective equipment could exceed, during the hours an individual is present in a week, an intake of 0.6 percent of the annual limit on intake (ALI) or 12 DAC-hours.
Under this criterion, an area shall be considered to be an airborne radioactivity area if an individual could receive an intake exceeding 12 DAC-hours in a week (i.e., if an individual was present in the area for 40 hours during a week and the airborne radioactive material concentration exceeded 30% of the specified DAC value(s); 40 hours multiplied by >0.30 DAC exceeds 12 DAC-hours) (10 CFR 835.2(a) Airborne radioactivity area).