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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
PART 20—STANDARDS FOR PROTECTION AGAINST RADIATION
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]