---
kind: "section"
citation: "10 C.F.R. § 835.403"
title: "10"
number: "835.403"
heading: "Air monitoring."
url: "https://uscodex.org/cfr/10/835.403"
---

# §835.403. Air monitoring.

- (a) Monitoring of airborne radioactivity shall be performed:
  - (1) Where an individual is likely to receive an exposure of 40 or more DAC-hours in a year; or
  - (2) As necessary to characterize the airborne radioactivity hazard where respiratory protective devices for protection against airborne radionuclides have been prescribed.
- (b) 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.

## Notes

### Amendments

[63 FR 59683, Nov. 4, 1998]

### Authority

Authority: 42 U.S.C. 2201, 7191; 50 U.S.C. 2410.

### Source

Source: 58 FR 65485, Dec. 14, 1993, unless otherwise noted.

### Amendments

[63 FR 59683, Nov. 4, 1998]