ML20084J107

Ro:On 730514,sample of Discharge Bay During Chlorination Cycle Revealed Chlorine Residual Concentrations Exceeded Tech Spec Limit.Requests Temporary Tech Spec Waiver on Chlorine Limits in Bay While Conducting Special Testing

ML20084J107
Person / Time
Site:	Quad Cities
Issue date:	06/14/1973
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	Oleary J US ATOMIC ENERGY COMMISSION (AEC)
References
BBS-73-126, NUDOCS 8305120143
Download: ML20084J107 (2)

Text

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• Comm:_ llth Edison Ouad-Cities Nuc!aar Pc..or Stat.on V

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Mr . John F . O ' Le ary , Di re c tor J/

Directorate of Licensing [,b_q\

U.S. Atomic Energy Commission J.O -

Washington, D. C. 20545

Reference:

Quad-Cities Nuclear Power Station Docket Numbers 50-254 and 50-265 DPR-29 and 30, Appendix B Section 1.1 and 3.1.A

Dear Mr. O ' Leary:

The purpose of this letter is to report chlorine residual concentrations in the discharge bay in excess of the limiting conditions for operation in the Monradiological Technical Specifications. The limit of 0.1 ppm free and combined chlorine in the discharge bay was c;.ceeded on several occasions during the past 30 days.

On May 14, 1973 station personnel sampled the dis-charge bay during a chlorination cycle. The total chlorine residual registered as high as 0.55 ppm with 390 gallons of sodium hypochlorite being in-jected at a fixed rate of 10 gpm. A total residual sample of about 5 ppm was also analyzed on May 16, 1973 The system was out of service for a period of a about one week for a pump replacement.

On May 25, 1973, a meeting was conducted at the station with Directorate of Licensing perconnel to discuss the operation of the chlorination system and Technical Specifications. As a result, of this meeting we have submitted a request for a temporary Technical Specification waiver on chlorine limits in the diccharge bay while conducting a special test program. The goals of this test program are outlined 1

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l Mr. John F. O ' Leary June ll, i 1973 in our request letter dated June 5,1973 and are intended to more completely characterize the behavior of chlorine injected into the condensers in the form of hypochlorite.

Very truly yours, COMII0llWEALTl! EDIS0?1 COMPA!iY Quad-Cities liuclear Power Station

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B. B. Ste nson Office Su brintendent BBS/zm I

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