10 CFR 20.1201 - Occupational dose limits for adults.
(1) An annual limit, which is the more limiting of -
(2) The annual limits to the lens of the eye, to the skin of the whole body, and to the skin of the extremities, which are:
(b) Doses received in excess of the annual limits, including doses received during accidents, emergencies, and planned special exposures, must be subtracted from the limits for planned special exposures that the individual may receive during the current year (see § 20.1206(e)(1)) and during the individual's lifetime (see § 20.1206(e)(2)).
(c) When the external exposure is determined by measurement with an external personal monitoring device, the deep-dose equivalent must be used in place of the effective dose equivalent, unless the effective dose equivalent is determined by a dosimetry method approved by the NRC. The assigned deep-dose equivalent must be for the part of the body receiving the highest exposure. The assigned shallow-dose equivalent must be the dose averaged over the contiguous 10 square centimeters of skin receiving the highest exposure. The deep-dose equivalent, lens-dose equivalent, and shallow-dose equivalent may be assessed from surveys or other radiation measurements for the purpose of demonstrating compliance with the occupational dose limits, if the individual monitoring device was not in the region of highest potential exposure, or the results of individual monitoring are unavailable.
(d) Derived air concentration (DAC) and annual limit on intake (ALI) values are presented in table 1 of appendix B to part 20 and may be used to determine the individual's dose (see § 20.2106) and to demonstrate compliance with the occupational dose limits.
(e) In addition to the annual dose limits, the licensee shall limit the soluble uranium intake by an individual to 10 milligrams in a week in consideration of chemical toxicity (see footnote 3 of appendix B to part 20).
(f) The licensee shall reduce the dose that an individual may be allowed to receive in the current year by the amount of occupational dose received while employed by any other person (see § 20.2104(e)).
Title 10 published on 2015-12-04
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR Part 20 after this date.
- 10 CFR 20.1502 — Conditions Requiring Individual Monitoring of External and Internal Occupational Dose.
- 10 CFR 20.1207 — Occupational Dose Limits for Minors.
- 10 CFR 20.1501 — General.
- 10 CFR 20.2203 — Reports of Exposures, Radiation Levels, and Concentrations of Radioactive Material Exceeding the Constraints or Limits.
- 10 CFR 20.1206 — Planned Special Exposures.
- 10 CFR 20.2104 — Determination of Prior Occupational Dose.
- 10 CFR 32.51 — Byproduct Material Contained in Devices for Use Under § 31.5; Requirements for License to Manufacture, or Initially Transfer.
- 10 CFR 20.1204 — Determination of Internal Exposure.
- 10 CFR 40.34 — Special Requirements for Issuance of Specific Licenses.