10 CFR 20.1203
§ 20.1203 Determination of external dose from airborne radioactive material.
United States · 10 CFR — Energy · Status: effective
Cite this
- Citation
- 10 CFR 20.1203, § 20.1203 Determination of external dose from airborne radioactive material, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/36494
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Full text
Licensees shall, when determining the dose from airborne radioactive material, include the contribution to the deep-dose equivalent, lens dose equivalent, and shallow-dose equivalent from external exposure to the radioactive cloud (see appendix B to part 20, footnotes 1 and 2).
Airborne radioactivity measurements and DAC values should not be used as the primary means to assess the deep-dose equivalent when the airborne radioactive material includes radionuclides other than noble gases or if the cloud of airborne radioactive material is not relatively uniform. The determination of the deep-dose equivalent to an individual should be based upon measurements using instruments or individual monitoring devices.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.