ML18039A737

Requests Relief from Specified ISI Requirements in Section XI of ASME Boiler & Pressure Vessel Code,1989 Edition.Encl Contains Request for Relief 3-ISI-7,for NRC Review & Approval

ML18039A737
Person / Time
Site:	Browns Ferry
Issue date:	03/26/1999
From:	Abney T TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9904130219
Download: ML18039A737 (8)

Text

CATEGORY 1

-REGULA'i RY INFORMATION DXSTRIBUTI SYSTEM (RXDS)

ACCESSION. NBR:9904130219 'DOC.DATE: 99/03/26 NOTARIZED: NO DOCKET FACIL: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 Records Management Branch (Document Control Desk)

SUBJECT:

Requests relief from specified ISI requirements in Section XI of ASME Boiler S Pressure Vessel Code,1989 Edition,no addenda. Encl contains request for relief 3-ISI-7 for NRC review &, approval.

DISTRIBUTION CODE A047D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: Inservice/Testing/Relief from ASME Code - GL-89-04 NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2 1 1 PD2-3-PD 1 1 DEAGAZIO,A 1 1 INTERNAL: ACRS 1 1 FILE CENTE~ 1 1 NRR/DE/ECGB 1 1 OCS-ABSTRACT 1 . 1 OGC/HDS3 1 0. RES/DET/EIB 1 .1 RES/DET/EMMEB 1 1 EXTERNAL: LITCO ANDERSON 1 1 NOAC NRC PDR 1' D

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NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 13 ENCL 12

0 ll ~ S Tennessee Valley Authority. Post Office Box 2000, Decatur, Alabama 35609 March 26, 1999 10 CFR 50.55a (g) (5) (iii)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket No. 50-296 Tennessee Valley Authority )

BROWNS FERRY NUCLEAR PLANT (BFN) UNIT 3 AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) SECTION XI r INSERVICE INSPECTION REQUEST FOR RELIEF 3-ISI-7 In accordance with 10 CFR SO.S5a(g) (5) (iii), TVA is requesting relief from specified inservice inspection requirements in Section XI of the ASME Boiler and Pressure Vessel Code, 1989 Edition, (no addenda). The enclosure to this letter submits request for relief 3-ISI-7 for NRC review and approval.

TVA has determined that nine components have nondestructive examination (NDE) coverage limitations (90 percent or less coverage completed) which exceeds that specified in ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds, Section XI, Division 1." The components are nine reactor pressure vessel (RPV) nozzle-to-vessel welds (ASME Section XI, Code Category B-D, nozzle-to-vessel welds).

The calculated NDE coverage completed varied for each component, ranging between 64 and 77 percent. The limitations encountered during the performance of the ultrasonic (UT) examination were caused by component configuration and structural design. The nozzle contours and the proximity of the biological shield wall limits access to the required weld volume and nozzle inside radius section.

qqoeiS0219 990326 PDR ADQCK 05000296 8 PDR

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U.S. Nuclear Regulatory Commission Page 2 March 26, 1999 The nozzle-to-vessel welds described above were examined during the first period (Cycle 8) of the BFN Uni:t 3 ASME Section XI, Inservice Inspection, Second Ten Year interval.

In a letter to NRC dated January 12, 1999, TVA submitted ASME Section XI, inservice inspection and repair and replacement summary reports (NIS-1 and NIS-2) for Unit 3 Cycle 8 operation. In that letter, TVA committed to submit a request for relief by April 5, 1999, for the nozzle-to-vessel weld examination limitations described above.

TVA requests review of this relief request prior to the Unit 3 Cycle 10 (Spring 2002) refueling outage to support scheduled ASME Section XI outage activities. TVA submitted a similar request for relief for the BFN Unit 2 RPV nozzle-

.to-vessel weld examinations by letter dated April 3, 1998.

NRC granted TVA's request for relief by letter dated February 23, 1999.

There are no new commitments contained in this letter.

If you have any questions, please telephone me at (256) 729-2636.

Si cerel Manager o censi g and dustry Aff irs Enclosu cc: See e 3

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U.S. Nuclear Regulatory Commission Page 3 March 26, 1999 Enclosure cc:. (Enclosure):

Mr. Albert W. De Agazio, Senior Project Manager U.S. Nuclear Regulatory. Commission One White Flint, North.

11555 Rockville Pike Rockville, Maryland 20852 Mr. Paul E. Fredrickson, Branch Chief U.S. Nuclear Regulatory Commission Region II 61 Forsyth Street, S.W.

Suite 23T85 Atlanta, Georgia 30303 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, Alabama 35611

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