ML20112A750

Application for Amend to License NPF-7,changing Tech Specs to Minimize Continued Diesel Engine Degradation & Subsequent Premature Failure & Modifying Change Request to Address Instrument Error in Diesel Loading Spec

ML20112A750
Person / Time
Site:	North Anna
Issue date:	03/13/1985
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Harold Denton, John Miller Office of Nuclear Reactor Regulation
Shared Package
ML20112A752	List: ML20112A750 ML20112A755
References
85-029A, 85-29A, NUDOCS 8503180435
Download: ML20112A750 (4)

Text

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1 March 13, 1985 Mra Harold R. Denton, Director Serial No. 85-029A Office of Nuclear Reactor Regulation.

N0/DAS/ ALM /DAH: ace Attn: Mr.-James R. Miller, Chief Docket No. 50-339

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

VIRGINIA POWER NORTH ANNA POWER STATION UNIT 2 EMERGENCY DIESEL GENERATORS SUPPLEMENTAL INFORMATION ON

-PROPOSED TECHNICAL SPECIFICATIONS CHANGE Virginia Power: letter, Serial No.85-029, d' ated February 1,

1985,

. submitted an exigent request-for an amendment, in tho' form of changes to Technical Specification 3/4.8.1, -to Operating License No. NPF-7 for North Anna Power Station Unit No. 2.

The proposed changes are deemed necessary to minimize continued diesel engine degradation and subsequent premature failure as has ' recently been experienced on Unit 2.

This submittal.

provides supplemental information and clarifications in support of the

-initial exigent request. _It additionally modifies the change request to address -instrument error in the specification of diesel' loading. This revision. to the technical specification change request is presented in Attachments '1 and 2.

L On February 1,-1985, Unit i experienced a diesel engine failure similar to the diesel engine failures experienced on Unit 2. ' Attachment 3 provides a

[

i summary of this Unit 1 diesel engine failure and a discussion of its relevance. to the Unit 2 exigent ~ request. Attachment 3 also provides

-supplemental information on diesel generator f ailure experience, recent l'

testing history, and other clarifications to - the. original technical.

specification change request. provides a summary of the

presently proposed diesel reliability improvement program, including the monitoring. surveillance program, ~with anticipated initiation dates for the component parts of the program.~ Although the reliability improvement program has not been completely finalized and is.likely to evolve with experience, we ' propose to implement this program as currently outlined concurrently

with implementation of the proposed technical specifications.

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O The information and clarification transmitted by this letter augments the previously submitted exigent request. This submittal does not alter the conclusions,. safety review, or significant hazards determination of the previous request. The submittal has been reviewed and approved by the Station Nuclear Safety and Operating Committee and the Safety Evaluation and Control Staff.

- Since this information supplements our previous submittal, which included the appropriate application fee, no additional application fee is included herein.

If you have any questions, or need additional information to process this request, please contact us immediately.

Very truly yours, e

D W. L. Stewart Attachments:

1.

Supplemental Revision to Proposed Technical Specification Change 2.

Discussion of Supplemental Revision

+

3.

Clarifications to Virginia Power Letter Serial No.85-029 dated February 1, 1985 4.

Proposed Diesel Reliability Improvement Program

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cc:

Dr. J. Nelson Grace 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 01shinski NRC Region II i

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e CSSIDIREALTR OF VIRGINIA )

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CITY OF RICID00ND

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

L.

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

He is duly authorised 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 me this

/T day of M c/v. I

, 19 //

My consission expires:

/2 / /,T, 19 f7.

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k Of WA'&

Notary Public I

(SEAL) s/001

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