[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: 10CFR20.1903]

[Page 346]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 20--STANDARDS FOR PROTECTION AGAINST RADIATION--Table of Contents
 
                   Subpart J--Precautionary Procedures
 
Sec. 20.1903  Exceptions to posting requirements.

    (a) A licensee is not required to post caution signs in areas or 
rooms containing radioactive materials for periods of less than 8 hours, 
if each of the following conditions is met:
    (1) The materials are constantly attended during these periods by an 
individual who takes the precautions necessary to prevent the exposure 
of individuals to radiation or radioactive materials in excess of the 
limits established in this part; and
    (2) The area or room is subject to the licensee's control.
    (b) Rooms or other areas in hospitals that are occupied by patients 
are not required to be posted with caution signs pursuant to 
Sec. 20.1902 provided that the patient could be released from licensee 
control pursuant to Sec. 35.75 of this chapter.
    (c) A room or area is not required to be posted with a caution sign 
because of the presence of a sealed source provided the radiation level 
at 30 centimeters from the surface of the source container or housing 
does not exceed 0.005 rem (0.05 mSv) per hour.
    (d) Rooms in hospitals or clinics that are used for teletherapy are 
exempt from the requirement to post caution signs under Sec. 20.1902 if-
-
    (1) Access to the room is controlled pursuant to 10 CFR 35.615; and
    (2) Personnel in attendance take necessary precautions to prevent 
the inadvertent exposure of workers, other patients, and members of the 
public to radiation in excess of the limits established in this part.

[56 FR 23401, May 21, 1991, as amended at 57 FR 39357, Aug. 31, 1992; 62 
FR 4133, Jan. 29, 1997; 63 FR 39482, July 23, 1998]