[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: 10CFR36.63]

[Page 621]
 
                            TITLE 10--ENERGY
 
                CHAPTER I--NUCLEAR REGULATORY COMMISSION
 
PART 36_LICENSES AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS
--Table of Contents
 
                   Subpart D_Operation of Irradiators
 
Sec. 36.63  Pool water purity.

    (a) Pool water purification system must be run sufficiently to 
maintain the conductivity of the pool water below 20 microsiemens per 
centimeter under normal circumstances. If pool water conductivity rises 
above 20 microsiemens per centimeter, the licensee shall take prompt 
actions to lower the pool water conductivity and shall take corrective 
actions to prevent future recurrences.
    (b) The licensee shall measure the pool water conductivity 
frequently enough, but no less than weekly, to assure that the 
conductivity remains below 20 microsiemens per centimeter. Conductivity 
meters must be calibrated at least annually.