ML20081K629

Forwards Ltr from Sc Dept of Health & Environ Control in Response to Util 950215 Request to Use Addl Treatment Chemicals

ML20081K629
Person / Time
Site:	Catawba
Issue date:	03/16/1995
From:	Estridge J DUKE POWER CO.
To:	Davis W, Harris J, Jackson A DUKE POWER CO.
References
NUDOCS 9503290190
Download: ML20081K629 (3)

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March 16,1995 A.P. Jackson -'CNO3CH J.T. Harris - CN01EM W.J. Davis - CN01CH G.L Ward - EC07D S.D. Davenport - EC07D S.W. Rodgers - CNO3CH

Subject:

Catawba Nuclear Station -NPDES Permit No. SC0004278 SCDHEC Approval for Use of Chemicals File: CN-702.13 Attached please find a letter from SCDHEC in response to our Februrary 15,1995 request to use additional treatment chemicals. SCDHEC basically approved everything as it was requested in our letter.

Should you have any questions concerning this letter please give me a call at (704) 875-5965.

Sincerely, Ip John Estridge, Engineer Environmental Division, Water Protection jte/432 cc: _NRC Document Distribution List M.A. Lascara - MG03A5 I

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, - ,r South Carolina  % g, gry.n, DHEC Depar>ws of H'see e and Environmemet Conest Seerd: fuohere E.Jetheur,008, choirman noteert J. Stripens, Jr. Vise Cheknen Jotm K eurinos Willioni M. Hue,Jr.Mn

, gg 2000%I1 Street, Columble, SC a9201 Promoessp Neehn, pre,sesW she Envirerwneret March 15,1995 Mr. John S. Carter, Technical System Manager F.nvironmental Division Duke Power Company 13339 Hagers Ferry Road IIuntersville, N.C. 28078-7929 Re: Request Approval for Usc of Chemicals Duke Power Co./ Catawba Nuclear Station York County

Dear Mr. Calter:

Our Office has received your February 15, 1995 letter requesting approval to use additional treatment chemicals at the Duke Power Company / Catawba Nuclear Station in York County. Based on a review of the infonnation provided, we approve your request to use the following treatment chemicals as indicated below:

1) Carbohydrazide (hydrazine substitute) shall be used as a corrosion inhibitor in the nuclear service water heat exchangers during wet layup and in the station's secondary chemistry system. The discharge of this parameter from Outfalls 001 and 002 shall be less than the 8.1 mg/l no observed effect concentration (NOEC) per occurrence.

2) NALCO DYNACOOL 1389 (cooling water dispersant) shall be used to enhance the dispersion of mud and silt in the nuclear service heat exchangers during wet layup. The discharge of this parameter from Outfall 001 shall not excced 0.3 mg/l per occurrence.

3) dibromo-3-nitrilopropionamide or DBNPA (microorganism control) shall be used to control mictmtganisms in the nuclear service water heat exchangers during wet layup. The .,ischarge of this parameter from Outfall 001 shall not exceed 0 mg/l per ocx:urrence since this product decays away within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> of application.

4) 3 MPA or 3-methoxypropylamine (ethanolamine replacement) shall be used as a pH control additive to reduce the amount of low level radioactive waste generated at the site. The discharge of this parameter from Outfall 002 shall not excced 0.1 mg/l per occurrence.

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PROM 8WRTER POLLtfr!ON TO s 704 875 5974 1995eC3-13 04s98PM a127 P.e3/e3 4#,.,...

Duke Power Co./ Catawba Nuclear Station 2/15/95 Icitter

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-If you should have any questions, please call me at (803)734-5247.

Sincerely, e

e/ ~ M. M Timothy . Eleazer Environmental Engineer Associate Industrial and Agricultural Wastewater Division TMFJCAT cc: Al Williams, Catawba EQC

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