Airborne Radioactivity Area 5
Airborne Radioactivity Area 5 : Radiation and Radiological Disasters. As defined in Title 10, Section 20.1003, of the?Code of Federal Regulations?(10 CFR 20.1003), the airborne radioactivity area is a room, enclosure, or area in which airborne radioactive materials, composed wholly or partially of licensed material, exist in concentrations that (1) exceed the?derived air concentration limits (DACs), or (2) would result in an individual present in the area without respiratory protection exceeding, during those hours, 0.6 percent of the?annual limit on intake (ALI)?or 12?DAC-hours. For additional detail, See: Appendix B?to10?CFR?Part?20, "Standards for Protection Against Radiation," and?Information for Radiation Workers
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