[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: 10CFR20.1601]

[Page 338]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 20--STANDARDS FOR PROTECTION AGAINST RADIATION--Table of Contents
 
Subpart G--Control of Exposure From External Sources in Restricted Areas
 
Sec. 20.1601  Control of access to high radiation areas.

    Source: 56 FR 23398, May 21, 1991, unless otherwise noted.


    (a) The licensee shall ensure that each entrance or access point to 
a high radiation area has one or more of the following features--
    (1) A control device that, upon entry into the area, causes the 
level of radiation to be reduced below that level at which an individual 
might receive a deep-dose equivalent of 0.1 rem (1 mSv) in 1 hour at 30 
centimeters from the radiation source or from any surface that the 
radiation penetrates;
    (2) A control device that energizes a conspicuous visible or audible 
alarm signal so that the individual entering the high radiation area and 
the supervisor of the activity are made aware of the entry; or
    (3) Entryways that are locked, except during periods when access to 
the areas is required, with positive control over each individual entry.
    (b) In place of the controls required by paragraph (a) of this 
section for a high radiation area, the licensee may substitute 
continuous direct or electronic surveillance that is capable of 
preventing unauthorized entry.
    (c) A licensee may apply to the Commission for approval of 
alternative methods for controlling access to high radiation areas.
    (d) The licensee shall establish the controls required by paragraphs 
(a) and (c) of this section in a way that does not prevent individuals 
from leaving a high radiation area.
    (e) Control is not required for each entrance or access point to a 
room or other area that is a high radiation area solely because of the 
presence of radioactive materials prepared for transport and packaged 
and labeled in accordance with the regulations of the Department of 
Transportation provided that--
    (1) The packages do not remain in the area longer than 3 days; and
    (2) The dose rate at 1 meter from the external surface of any 
package does not exceed 0.01 rem (0.1 mSv) per hour.
    (f) Control of entrance or access to rooms or other areas in 
hospitals is not required solely because of the presence of patients 
containing radioactive material, provided that there are personnel in 
attendance who will take the necessary precautions to prevent the 
exposure of individuals to radiation or radioactive material in excess 
of the limits established in this part and to operate within the ALARA 
provisions of the licensee's radiation protection program.