[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR20.1201]

[Page 329-330]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 20--STANDARDS FOR PROTECTION AGAINST RADIATION--Table of Contents
 
                   Subpart C--Occupational Dose Limits
 
Sec. 20.1201  Occupational dose limits for adults.

    Source: 56 FR 23396, May 21, 1991, unless otherwise noted.


    (a) The licensee shall control the occupational dose to individual 
adults, except for planned special exposures under Sec. 20.1206, to the 
following dose limits.
    (1) An annual limit, which is the more limiting of--
    (i) The total effective dose equivalent being equal to 5 rems (0.05 
Sv); or
    (ii) The sum of the deep-dose equivalent and the committed dose 
equivalent to any individual organ or tissue other than the lens of the 
eye being equal to 50 rems (0.5 Sv).
    (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:
    (i) A lens dose equivalent of 15 rems (0.15 Sv), and
    (ii) A shallow-dose equivalent of 50 rem (0.5 Sv) to the skin of the 
whole body or to the skin of any extremity.
    (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 Sec. 
20.1206(e)(1)) and during the individual's lifetime (see Sec. 
20.1206(e)(2)).
    (c) 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

[[Page 330]]

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 Sec. 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 Sec. 20.2104(e)).

[56 FR 23396, May 21, 1991, as amended at 60 FR 20185, Apr. 25, 1995; 63 
FR 39482, July 23, 1998; 67 FR 16304, Apr. 5, 2002]]