[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR39.71]

[Page 634]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 39_LICENSES AND RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING
--Table of Contents
 
               Subpart E_Security, Records, Notifications
 
Sec. 39.71  Security.


    (a) A logging supervisor must be physically present at a temporary 
jobsite whenever licensed materials are being handled or are not stored 
and locked in a vehicle or storage place. The logging supervisor may 
leave the jobsite in order to obtain assistance if a source becomes 
lodged in a well.
    (b) During well logging, except when radiation sources are below 
ground or in shipping or storage containers, the logging supervisor or 
other individual designated by the logging supervisor shall maintain 
direct surveillance of the operation to prevent unauthorized entry into 
a restricted area, as defined in Sec. 20.1003 of this chapter.

[52 FR8234, Mar. 17, 1987, as amended at 63 FR 39483, July 23, 1998]