Title 10 Part 20 → Subpart C → §20.1203

Title 10 → Chapter I → Part 20 → Subpart C → §20.1203

Electronic Code of Federal Regulations e-CFR

Title 10 Part 20 → Subpart C → §20.1203

e-CFR data is current as of September 12, 2019

Title 10Chapter IPart 20Subpart C → §20.1203

Title 10: Energy
Subpart C—Occupational Dose Limits

§20.1203   Determination of external dose from airborne radioactive material.

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).

Note: 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.

[56 FR 23396, May 21, 1991, as amended at 60 FR 20185, Apr. 25, 1995; 63 FR 39482, July 23, 1998]