ML19254B157

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Discusses Util Position on Reg Guide 1.135,Revision 0, Normal Water Level & Discharge at Nuclear Power Plants. Unable to Obtain 20 Yrs of Historical Data to Compute Normal/Groundwater Level Per Reg Guide
ML19254B157
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 09/18/1979
From: Brown S
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Harold Denton, Parr O
Office of Nuclear Reactor Regulation
References
RTR-REGGD-01.135, RTR-REGGD-1.135 NUDOCS 7909240496
Download: ML19254B157 (1)


Text

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Si VIRGINIA ELL iHIC AND POWER COMPANY I g September 18; 1979 Fr. Harold R. Danton, Director Serial flo. 722 /

Office of Nuclear Reactor Regulation '

PSE&C/CES:adw:mc

Attn: Mr. O. D. Parr, Ct:ief

. Light Water Reactors Branch flo. 3 Docket Nos. 50-401 Division of Proj.ect Management 50-405 U.S. fluclear Regulatory Cormission Washington, D. C. 20555 ,

Dear Mr. Denton:

Our letter Serial No. 039 of February 6,1979 advised you of our x intention to inform you continually of Company positions which are not in accordance with individual Regulatory Guides. Thh letter advises you of the Company position on Regulatory Guide 1.135, Revisicn 0 "Nor-mal Water Level and Discharge at fluclear Power Plant's",for the North

- Anna 3 and 4 units.

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Comoany Position

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North Anna Units. 3 and 4 comply with Regulatory Guide 1.135 with the following, exception:

Section C.8 states that "tiormal groundwater level should be the median level based on 20 years of data." Twenty years of historical data for the site, including the influence of Lake Anna, are unavailable. Normal site groundwater con-ditions for florth Anna Units 3 ?.nd 4 are based on a conser-

, vative general prediction of groundwater elevations which includes the predicted effects of Lake Anna and the service water reservoir.

This position will be placed on file and will be included in the Final Safety Analysis Report for these units. -

s We would be pleased to discuss this position with yDu at your con-venience. Should you wish to meet with us to discuss this position, or

  • if you have any questions please contact,us.

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Vr ruly l

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'. Bro 7 b enior ice President - ow r Statich Engineering and Codstruction '

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/ 393135 7909240 194,