ML18038B832

Application for Amends to Licenses DPR-52 & DPR-68, Consisting of TS Change 376,extending EDG Allowed Outage Time

ML18038B832
Person / Time
Site:	Browns Ferry
Issue date:	03/12/1997
From:	Abney T TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18038B833	List: ML18038B832 ML18038B834
References
TVA-BFN-TS-376, NUDOCS 9703260043
Download: ML18038B832 (8)

Text

CATEGORY j.

~ ii-c,> REGULATO~INFORMATION DISTRIBUTION ~TEM (RIDS)

'CCESSION NBR:9703260043 DOC.DATE: 97/03/12 NOTARIZED: YES DOCKET I FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH. NAME AUTHOR AFFILIATION ABNEY,T.E. Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Application for amends to Licenses DPR-52 a DPR-68, consisting of TS Change 376,extending EDG allowed outage time.

DISTRIBUTION CODE: D030D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: TVA Facilities Routine Correspondence NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-3 1 1 PD2-3-PD 1 1 WILLIAMS,J. 1 1 INTERNAL: ACRS 1 MB% CENTER 01 1 1 OGC/HDS3 0 S/iDE/SS'BB/SES~ 1 1 EXTERNAL: NOAC 1 1 NRC PDR 1 1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM OWFN SD-5(EXT. 415-2083) TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 9 ENCL , 8

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 March 12, 1997 TVA-BFN-TS-376 10 CFR 50.4 10 CFR 50.90 10 CFR 50.91 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of Docket Nos. 50-260 Tennessee Valley Authority 50-296 I

BROWNS FERRY NUCLEAR PLANT (BFN) UNITS 2 and 3 TECHNICAL SPECIFICATIONS (TS) CHANGE 376 EXTENDED EMERGENCY DIESEL GENERATOR (EDG) ALLOWED OUTAGE TIME (AOT)

In accordance with the provisions of 10 CFR 50.4 and 50.90, TVA is submitting a request for an amendment (TS-376) to licenses DPR-52 and DPR-68 to change the TS for Units 2 and 3 to extend the current 7-day AOT for EDGs to 14, days. The purpose of increasing the AOT is to provide additional flexibility for preventive maintenance and repair of EDGs.

The change is justified for several reasons. First, TVA's off-site power distribution is diverse and provides a dependable source of power to BFN. Second, the on-site standby power system has redundancy and is capable of compensating for an out-of-service EDG. Third, BFN uses a proceduralized risk-based approach for'cheduling maintenance which limits removal of risk sensitive equipment from service during EDG outages. Also, as discussed in the enclosure, with BFN Unit 1 in an indefinite nonoperational status, the ability of Units 2 and 3 to mitigate Loss of Off-Site

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Q'.S. Nuclear Regulatory Commission Page 2 March 12, 1997 power type events is improved because more EDGs are available for emergency service. Accordingly, we are not requesting the equivalent TS changes to Unit 1 TS.

TVA has determined that there are no significant hazards considerations associated with the proposed change and that the change qualifies for a categorical exclusion pursuant to the provisions of 10 CFR 51.22(c)(9) for environmental review. The BFN Plant Operations Review Committee and the BFN Nuclear Safety Review Board have reviewed this proposed change and determined that operation of BFN Units 2 and 3 in accordance with the proposed change will not endanger the health and safety of the public. Additionally, in accordance with 10 CFR 50.91(b)(1), TVA is sending a copy of this letter and enclosures to the Alabama State Department of Public Health.

Enclosure 1 to this letter provides the description and evaluation of the proposed change. This includes TVA's determination that the proposed change does not involve a significant hazards consideration. Enclosures 2 and 4 contain marked-up copies of the appropriate pages from current Unit 2 and 3 TS, and from the proposed Improved Standard Technical Specifications (ISTS) to show the proposed changes. BFN's conversion package to lSTS format was submitted on September 6, 1996 as TS-362. Enclosures 3 and 5 forward the revised current TS and revised ISTS pages for Units 2 and 3 which incorporate the proposed changes.

The vendor recommended 12-year preventive maintenance outages for the EDGs begin in the Fall of 1997 and continue into the Spring of 1998 for all eight BFN EDGs. These are major maintenance outages which are estimated to require 13 days per EDG based on a two 8-hour shift per day work schedule.

Therefore, TVA is requesting review of the proposed TS changes prior to these planned outages.

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U. S. Nuclear Regulatory Commission

'Page 3 March 12, 1997 TVA requests that the revised TS be made effective within 30 days of NRC approval. lf you have any questions about this change, please telephone me at (205) 729-2636.

Sincerely, T. E. Abney Manager o Licens ng and Ind stry Affa rs Enclosur cc: See page 4 Subscribed and sworn to before me on this 'iQhh day of ~o>n 1997.

Notary Public

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U.S. Nuclear Regulatory Commission Page 4 March 12, 1997 Enclosures cc (Enclosures):

Chairman Limestone County Commission 310 West Washington Street Athens, Alabama 35611

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Mr. Mark S. Lesser, Branch Chief U.S. Nuclear Regulatory Commission Region XX 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, Alabama 35611 Mr. Joseph F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville .Pike Rockville, Maryland 20852 Dr. Donald E. Williamson State Health Officer Alabama State Department of Public Health 434 Monroe Street Montgomery, Alabama 36130-3017