[Code of Federal Regulations]
[Title 10, Volume 1]
[Revised as of January 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR39.53]

[Page 607]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 39--LICENSES AND RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING--Table of Contents
 
                          Subpart C--Equipment
 
Sec. 39.53  Energy compensation source.

    The licensee may use an energy compensation source (ECS) which is 
contained within a logging tool, or other tool components, only if the 
ECS contains quantities of licensed material not exceeding 3.7 MBq [100 
microcuries].
    (a) For well logging applications with a surface casing for 
protecting fresh water aquifers, use of the ECS is only subject to the 
requirements of Secs. 39.35, 39.37 and 39.39.
    (b) For well logging applications without a surface casing for 
protecting fresh water aquifers, use of the ECS is only subject to the 
requirements of Secs. 39.15, 39.35, 39.37, 39.39, 39.51, and 39.77.

[65 FR 20345, Apr. 17, 2000]