ML18153B202

Submits Follow Up to Telephone Notification Re Excursion of Total Suspended Solids Limitations at Plant Outfall 181

ML18153B202
Person / Time
Site:	Surry
Issue date:	01/03/1995
From:	Marshall B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Christopher Cook VIRGINIA, COMMONWEALTH OF
References
NUDOCS 9501100219
Download: ML18153B202 (2)

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• Innsbrook Tee/mica/ Center 5000 Dominion B011le1*ard Glen Allen, Virginia 23060 January 3, 1995 VIRGINIA POWER UESTED Camille S. Cook Department of Environmental Quality Piedmont Regional Water Office P. 0. Box 6030 Glen Allen, VA 23058 Re: Surry Power Station, VA0004090

Dear Ms. Cook:

This is in follow up to the telephone notification made to you by Mr. Daniel James of my staff on December 27, 1994, of an excursion of total suspended solids (TSS) limitations at Surry Power Station's Outfall 181.

Internal Outfall 181 is an intermittent discharge of Unit 1 steam generator blowdown. Discharge at this point was initiated at 2137 hours0.0247 days <br />0.594 hours <br />0.00353 weeks <br />8.131285e-4 months <br /> on December 26 at a flow rate of about 200 gpm. The station Chemistry Department routinely analyzes steam generator blowdown discharges when discharging to the discharge canal. A sample was taken at 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> on December 27. During sampling, the appearance of the effluent was suspect and, therefore, discharge was terminated at 0503 hours0.00582 days <br />0.14 hours <br />8.316799e-4 weeks <br />1.913915e-4 months <br /> pending sample analysis results. The sample analysis indicated TSS at 257.7 mg/1 which is above limits.

The discharge was not restarted.

Due to the nature of the system which produces this discharge, it is expected that the solids causing the TSS results were inert fine particles of corrosion products which had accumulated in the blowdown facilities. No process wastes other than the normal blowdown have been added to the discharge and the only chemicals in a discharge from this system would be the minute concentrations of corrosion control products previously described for this outfall.

Also, due to the low flow rate of 200 gpm, this discharge would be instantaneously assimilated by the station's cooling water flow of about.one million gpm with no potential detrimental* environmental impact, either in the discharge canal itself or the receiving waters of Outfall 001.

Please note that this is an intermittent discharge point which had previously been sampled only once during the month and is not likely to discharge again during the December reporting period.

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Camille S. Cook Page 2 January 3, 1995 Therefore the TSS to be reported on the December DMR will impact data for both maximum and average limitations for this outfall.

Since this was a single, brief discharge, we believe it should be considered as one violation rather than two violations (one for both maximum and average limitations).

Should you need additional information or have any questions about this matter, please contact Daniel James at 273-2996.

Mars Manager Water Quality cc:

U.S. Nuclear Regulatory Commission Region II 101 Marietta St., NW Suite 2900 Atlanta, GA 30323 Re: Surry Units 1 & 2 Docket Nos. 50-280/50-281 License Nos. DPR-32/DPR-37 U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Re: Surry Units 1 & 2 Docket Nos. 50-280/50-281 License Nos. DPR-32/DPR-37 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station