ML20199J633

Discusses Evaluation of Info Provided in 971218 Submittal Re ISI Program Relief Request NDE-46.Forwards SE Supporting Request to Repair Flaws in Accordance W/Gl 90-05 for ASME Code Class 3 SW Piping

ML20199J633
Person / Time
Site:	North Anna
Issue date:	02/02/1998
From:	Bill Dean NRC (Affiliation Not Assigned)
To:	Ohanlon J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
Shared Package
ML20199J637	List: ML20199J633 ML20199J643
References
GL-90-05, GL-90-5, TAC-MA0390, TAC-MA390, NUDOCS 9802050371
Download: ML20199J633 (3)

Text

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,8 j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. SOM64001 o ,

%..',,,* February 2,1998 Mr. J. P. O'Hanlon Senior Vice President Nuclear Virginia Electric and Popr Company 5000 Dominion Blvd.

Glen Allen, 'ni s nia 23060

SUBJECT:

NORTH ANNA POWER STATION, UNIT 1 - ASME SECTION XI RELIEF REQUEST NDE SERVICE WATER SYSTEM (SWS) LEAKS (TAC NO. MA0190)

Dear Mr. O'Hanlon:

The NRC staff has evaluated the information provided in your December 18, 1997, submittal related to the inservice inspection program relief request NDE-46.

Based on the evaluation of relief request NDE-46, it is concluded that the iepair would have necessitated removing portions of the SWS that are otherwise structurally sound and rapable of performing their intended safety function.

This would have unnecessarily reduced the margin of safety of the SWS.

Therefore, the immediate Code repair during the period October 21, 1997, through November 4, 1997, would have constituted an undue burden on Virginia Electric and Power Company (VEPCO).

Your alternative program for this period included evaluation of the flaws which is consistent with the guidelines and acceptance criteria of Generic Letter 90 05. The staff finds the structural integrity and operability assesst " to be acceptable. You have stated that during the period of October 21, 1997, through November 4. 1997, the welds were monitored by plant personnel and all the flaws were repaired by November 4.1997. In addition.

you had evaluated the defective areas and determined that the flaws were acceptable and the SWS was determined to be operable.

While the impracticality of the Code requirements was not shown, the staff finds that relief may be granted pursuant to 10 CFR 50.5Sa(a)(3)(11) in that compliance with the Code would have resulted in hardship without a compensating increase in the level of quality and safety. The staff's J evaluation and conclusions are contained in the Enclosure. 1

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2 The staff has completed its evaluation of this matter and we are therefore, closing out TAC No. MA0390.

Sincerely.

Original signed by:

William M. Dean, Director Project Directorate 11-1 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket No. 50-338

Enclosure:

As stated cc w/ encl: See next page Distribution

1. Docket Eile.

PUBLIC PDil-1 RF J. Zwolinski

1. Harris (E. Mail SE only)

OGC G. Hill (2)

ACRS M. Tschiltz J. Johnson, RIl FILEkAME - G:\NOANNA\MA0390 REL *See previous concurrence OFFICE PM:PDil-1 LA:PDll-1 D:PDll-1 OGC NLO BC:ECGB NAME NKalyanam* Dunnington WMDea Uttal* GBagchi*

E'n' (o DATE 1/20/98 J /2 /98 52/JL/98 1/26/98 1/14/98 COPY MVNo

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Mr. J. P, O'Hanlon North Anna Power Station l Virginia Electric & Power Company Units 1 and 2 cc:

Mr. J Jeffrey Lunsford i County Administrator Regional Administrator, Region 11 Louisa County U.S. Nuclear Regulatory Comission P.O. Box 160 Atlanta Federal Center

, Louisa Virginia 23093 61 Forsyth St., SW, Suite 23T85 Atlante, Georgia 30303 Michael W. Maupin, Esquire l

Hunton and Williams Mr. W R. Matthews, Manager Riverfront Plaza, East Tower North Anna Power Station 951 E. Byrd Street P. O. Box 402 Richmond, Virginia 23219 Mineral, Virginia 23117 Dr. W. T.' Lough Mr. R. C. Haag Virginia State Corporation U.S. Nuclear Regulatory Commission Commission Atlanta Federal Center Division of Energy Regulation 61 Forsyth St., SW. Suite 23T85 P. O. Box 1197 Atlanta, Georgia 30303 Richmond, Virginia 23209 '

Mr. J. P. O'Hanlon Old Dominion Electric Cooperative Senior Vice President - Nuclear 4201 Dominion Blvd. Virginia Electric and Power Company Glen Allen, Virginia 23060. Innsbrook Technical Center 5000 Dominion Blvd.

Mr. J. H. McCarthy, Manager Glen Allen. Virginia 23060 Nuclear Licensing &.0perations Support Mr. David Christian, Manager.

Virginia Electric and Power Company Surry Power Station Innsbrook Technical Center Virginia Electric and Power Company 5000 Dominion Blvd. 5570 Hog Island Road Glen Allen Virginia 23060 Surry, Virginia 23883 Office of the Attorney General Robert B. Strobe. M.D., M.P.H.

Comonwealth of Virginia State Health Comissioner 900 East Main Street Office of the Commissioner Richmond, Virginia 23219 Virginia Department of Health P.O. Box 2448 Senior-Resident inspector _ Richmond, Virginia 23218 North Anna Power Station U.S. Nuclear-Regulatory Comission 1024 Haley Drive Mineral, Virginia 23117 a