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 -- 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.
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.
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).
That is, if the airborne radioactive material concentration exceeds or is likely to exceed the specified value(s), then the area shall be considered an airborne radioactivity area (10 CFR 835.2(a), Airborne radioactivity area).