ML20105A508

Application for Amend to License NPF-7,revising Tech Specs to Minimize Continued Emergency Diesel Generator Degradation & Premature Failure Now Being Experienced.Fee Paid

ML20105A508
Person / Time
Site:	North Anna
Issue date:	02/01/1985
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Harold Denton, John Miller Office of Nuclear Reactor Regulation
Shared Package
ML20105A514	List: ML20105A508 ML20105A526
References
85-029, 85-29, NUDOCS 8502040375
Download: ML20105A508 (3)

Text

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VIRGINIA ELEC'IRIC AND PowuR COMPANY RIcuxoxn,VIHOINIA 20261 February 1, 1985 w.L.sraw m Vics Punenonwr Nect.mAm oranArnows Mr. Harold R. Denton, Director Serial No.85-029 Office of Nuclear Reactor Regulation N0/DAS/ ALM:acm Attn:. Mr. James R. Miller, Chief Docket No. 50-339

-Operating Reactors Branch No. 3 License Mo. NPF-7 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNIT 2 PROPOSED TECHNICAL SPECIFICATIONS CHANGE Pursuant to 10CFR50.90, the Virginia Electric and Power Company requests an amendment, in the form of changes to the Technical Specifications, to Operating License No. NPF-7 for North Anna Power Station Unit No. 2.

During the past two months, North Anna has experienced two failures on each of the. Unit 2 Emergency. Diesel Generators (EDG).

In one incidence, both Unit 2 diesels were concurrently inoperable.

This resulted in the reactor being shutdown per the Technical Specifications with subsequent corrective actions requiring eight days downtime.

Efforts to determine the cause of the failures and to initiate a diesel reliability improvement program have identified several of the testing requirements of the associated Technical Specification as contributing to the unreliability experienced on the engines.

We intend to develop and initiate a reliability improvement program > for the

. diesels.

This effort will include interface with the diesel manufacturer, Colt Industries. Additionally, as part of our technical exchange program with the Japan Atomic Power ' Company, we have requested and intend to review the technical specifications, test procedures, and other related maintenance information associated with the exemplary diesel reliability experienced by the Japanese.-

The enclosed. Technical Specifications change request represents our initial determinations as to licensing actions which are immediately necessary to

. minimize continued EDG degradation and premature failure now being experienced on Unit 2.

After accumulating sufficient information and experience through the diesel reliability improvement program, we intend to reassess. the Technical Specifications of both units and propose specification changes which programatically address diesel reliability for North Anna. Power Station.

The' proposed changes to Technical Specification 4.8.1 are provided in Attachment 1.-

A discussion of the proposed Technical Specifications is provided in Attachment 2.

The basis for the exigent request has been provided

. in Attachment 3.. In accordance with 10 ' CFR Part 170, an Application Fee ofp

$150'is also enclosed.

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vimonu A Etzernic Awn Powza COMPANY TO Mr. Harold R. Denton This request has been reviewed and approved by the Station Nuclear Safety and Operating Committee and the Safety Evaluation and Control Staff.

It has been determined that this change does not pose an unreviewed safety question as defined in 10 CFR 50.59 and does not pose a significant hazards consideration as. defined in 10 CFR 50.92.

Because the proposed Technical Specification is likely to have both direct and positive impact on diesel availability and consequentially on our power generation ~ capability for 1985, we would appreciate your prompt attention to this request and issuance of the change by February 18, 1985.

If you have any

-questions, or need additional information to process this request, please contact us immediately.

Very truly yours, W. L. Stewart Attachments:

1.- Proposed Technical Specification Change 2.

Discussion of Proposed Changes 3..

Basis for Exigent Request

4..-Application Fee cc:

Mr. J. P. O'Reilly Regional-Administrator NRC Region II

' Mr. M. W. Branch NRC Resident Inspector North Anna Power-Station Mr.

C.' Price Department of Health 109 Governor Street

Richmond, Virginia 23219 Mr.' John Olshinski

-NRC Region II

Colet0NWEALTH OF VIRGINIA )

)

CITY OF RICHMOND

)

The foregoing document was acknowledged before me, in and for the City and Commonwea3 % aforesaid, today by W.

L.

Stewart who is Vice President Nuclear Operations, of the Virginia Electric and Power Company.

He is duly authorized to execute and file the foregoing document in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.

Acknowledged before se this /8 day of

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