ML18153A879

Informs That It Is Intented That Groundwater Withdrawal Permit for Plant Be Handled as Continuation of Existing Withdrawal Rights,As Followup to Previously Submitted Preliminary Groundwater Withdrawal Application

ML18153A879
Person / Time
Site:	Surry
Issue date:	03/03/1994
From:	Marshall B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Bruce T VIRGINIA, COMMONWEALTH OF
References
NUDOCS 9403100339
Download: ML18153A879 (3)

Text

Innsbrook Technical Center 5000 Dominion Boule1*arcl Glen Allen. 1*irginia 1306n

• -.,.-

March 3, 1994

• VIRGINIA POWER T. Scott Bruce, Environmental Program Planner Department of Environmental Quality Water Division P. 0. Box 11143 Richmond, VA 23230 RE: SURRY POWER STATION - GROUND WATER WITHDRAWAL PERMIT

Dear Mr. Bruce:

This is in follow up to our Preliminary Ground Water Withdrawal Application previously submitted and your discussions with Mr. Daniel James of my staff. As previously indicated, it i_s intended that the ground water withdrawal permit for Surry Power Sta~ion be handled as a continuation of existing .wit~dra,wal right$, based upon_ .historic use,. :but with specia,I conditions to allow additional .withdrawals up'_to the facility's capabilities

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due:

• ' *j to the !'un.iql,Je requir,ements_ .for ,nuclear ..power stations". as _provided. in.Jh<<f Coqe(cif'

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. . . .

We are not requesting authorization for actdai increased ground water withdrawals .. It is expected that *future normal operations would require ground water withdrawal rates consistent with the historic use data previously submitted in accordance with the Water Withdrawal Reporting Regulation. It is neither intended nor anticipated that withdrawals of the maximum quantities of which the station's pumping equipment is capable will ever occur. However, in order to support the safety needs of the nuclear power operations, it is imperative that access to additional withdrawal amounts be maintained, and not be considered as violation of the withdrawal permit. Also, should such withdrawais ever be needed, such events would be of short term duration and would not continue_ as an increased usage pattern.

The "unique requirements" which would require rapid access to larger amounts of ground water include:

• Emergency Condensate Storage Tank/Auxiliary Feed Water - Groundwater is used to fill the Emergency* Condensate Storage Tanks, which supply water for

• ' emergency auxili~ry feed for reactor protection during emergencies. As a. "worst

• • case" example, a- dual unit emergency woulct *use 2800 gpm for 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> to react, cold shutdown; a 2,688,000 gallon draw ori ttie water supply. Makeup to the tanks at the highest rate possible would be needed to maintain the safety capabilities of the facilities.

I 0 0 1403100339 940303 pDR ADOCK 05000280 PDR.

/J T. Scott Bruce March 3, 1994 Page 2

• Spent Fuel Pit Emergency Fill - In the case of a major leak, the Fire Water Tank would be used as an emergency feed to keep spent fuel adequately covered and radiation levels safe. As a "worst case" example, a drop in the pit water level to 13" above the spent fuel would require that the pit be refilled to a 24 foot level. At 1182 gallons per inch of pit level, this would pull 340,416 gallons from the fire water reserves. A rapid refill of the tank would exceed the normally permitted withdrawal.

• Containment Exterior Cooling - During extended periods of hot weather, fire water is sprayed on the containment domes to maintain interior temperatures at safe levels via evapOiative cooling. Undei worst case conditions, 200 gpm on each of two units would use 192,000 gpd which would have to be replaced by ground water withdrawals. Of the uses listed here, this is the most likely to ever occur.

During most hot weather periods, this cooling would probably be included in normal withdrawal amounts. Only during unusual extremes of temperatures and duration would withdrawals above normal volumes occur to compensate for containment cooling.

• Extended Fire Fighting - A major fire could require approximately 600 gpm (36,000 gph) over several hours. This, of course, would be a short duration event of ground water withdrawal above normal use rates to resupply the fire water tank.

• Outages - During station outages, significantly more personnel could be on site.

Depending on the type of outage, duration and activities being conducted during a particular outage, more water may be required to support those projects. For most outages, water use would be within normal use withdrawal rates but there is a potential for greater use rates. Such conditions would be of short duration and would likely, on an annual basis, average into historical use amounts.

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

B. M. Marshall, P.E.'

Manager L.

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Water Quality

e T- Scott Bruce March 3, 1994 Page 3 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

~:S. ~.ucleaLBegwlater-y~Gemmissioo 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 I

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