ML19347E601

Ro:On 810504,chlorine Residual Exceeded Max Permit Limit. Caused by Insufficient Water Being Added to Sodium Hypochlorite Reservoir to Achieve Proper Chlorine Dilution. Solution Diluted by Adding More Water

ML19347E601
Person / Time
Site:	Sequoyah
Issue date:	05/11/1981
From:	Elashry M TENNESSEE VALLEY AUTHORITY
To:	Patrick J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
NUDOCS 8105130106
Download: ML19347E601 (1)

Text

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TENNESSEE VALLEY AUTHORITY Nonnis TENNESSEE 37828 215 Natural Resources Building NAY 1 1 1981 tn d D iP1 b Q.

Mr. James R. Patrick, Jr. , Chief Compliance Section, Water Enforcement Branch

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Environmental Protection Agency, Region IV al

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MAY 131981 C.8 345 Courtland Street n.a.m maumes O[

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Atlanta, Georgia 30365 y

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Dear Mr. Patrick:

9 ith NOTIFICATION OF NONCOMPLIANCE WITH EFFLUENT LIMITATIONS - NPDES PERMIT NO. TN0026450 - SEQUOYAH NUCLEAR PLANT Description of the discharge--Discharge No. 002 - Sewage treatment plant effluent. A sample collected on May 4,1981 had a total chlorine residual of 3.0 mg/1, exceeding the maximum permit limitation of 2.0 mg/1.

Cause and period of the noncompliance--It is believed that a too high chlorine concentration was fed to the contact tank, caused by not enough water being added to the sodium hypochlorite reservoir to achieve the proper chlorine dilution.

Steps taken to reduce, eliminate, and prevent recurrence of the noncomplying discharge--The chlorine solution was diluted by adding more water on May 4.

The operator has been instructed to exercise more care in preparing the chlorine solution.

Sincerely, Mohamed T. El-Ashry, Ph.D.

Assistant Manager of Natural Resources (Environment) cc: Tennessee Department of Public Health Division of Water Quality Control 621 Cordell Hull Building Nashville, Tennessee 37219 Mr. Harold E. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue -

Washington, DC 20555 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3300, 101 Marietta Street Atlanta, Georgia 30303 S

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