[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR20.1203]

[Page 334]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 20--STANDARDS FOR PROTECTION AGAINST RADIATION--Table of Contents
 
                   Subpart C--Occupational Dose Limits
 
Sec. 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]