10 C.F.R. § 20.1203 Determination of external dose from airborne radioactive material.
Title 10 - Energy
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]
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.
