# Occupational Radiation Protection
> **Nuclear Regulatory Commission** · Final rule. · Published 2011-04-13 · Effective 2011-05-13 · 76 FR 20489
## Document
- **Document number:** 2011-8836
- **Category:** nuclear-safety
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 76 FR 20489
- **CFR reference:** 10 CFR 835
- **Publication date:** 2011-04-13
- **Effective date:** 2011-05-13
- **Energy docket:** Docket No. HS-RM-09-835
## Abstract

The Department of Energy (DOE) today amends the values in appendix C to its Occupational Radiation Protection requirements. The derived air concentration values for air immersion are calculated using several parameters. One of these, exposure time, is better represented by the hours in the workday, rather than the hours in a calendar day, and is therefore used in the revised calculations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/04/13/2011-8836/occupational-radiation-protection)
---
*AI Analytics · CC0 1.0*