§ 835.403 - Air monitoring.

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Monitoring of airborne radioactivity shall be performed:

Where an individual is likely to receive an exposure of 40 or more DAC-hours in a year; or

As necessary to characterize the airborne radioactivity hazard where respiratory protective devices for protection against airborne radionuclides have been prescribed.

Real-time air monitoring shall be performed as necessary to detect and provide warning of airborne radioactivity concentrations that warrant immediate action to terminate inhalation of airborne radioactive material.