10 CFR 835.209
§ 835.209 Concentrations of radioactive material in air.
United States · 10 CFR — Energy · Status: effective
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- Citation
- 10 CFR 835.209, § 835.209 Concentrations of radioactive material in air, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/40887
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Full text
(a) The derived air concentration (DAC) values given in appendices A and C of this part shall be used in the control of occupational exposures to airborne radioactive material.
(b) The estimation of internal dose shall be based on bioassay data rather than air concentration values unless bioassay data are:
(1) Unavailable;
(2) Inadequate; or
(3) Internal dose estimates based on air concentration values are demonstrated to be as or more accurate.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.