ML18038B895

Forwards ASME Section XI ISI Summary Rept for BFN Unit 3 Cycle 7 Refueling Outage 970222-0313, for Review

ML18038B895
Person / Time
Site:	Browns Ferry
Issue date:	06/10/1997
From:	Abney T TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18038B896	List: ML18038B895 ML18038B897
References
NUDOCS 9706170321
Download: ML18038B895 (6)

Text

REGULATO CATEGORY i~

INFORMATION DISTR'IBUTION MiwTEM (RIDS)

ACCESSION NBR:.9706170321 DOC.DATE: 97/06/10 NOTARIZED: NO DOCKET ¹ FACIL:50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH,'4&PE AUTHOR AFFILIATION ABNEdpT.E. Tennessee Valley Authority RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Forwards "ASME Section XI ISI Summary R pt for BFN Unit 3 Cycle 7 Refueling Outage 970222-0313."

DISTRIBUTION CODE: R0470 COPIES RECEIVED! LTR ! ENCL I SIZE: + 10 GL-89-04 TITLE: OR Submittal: Inseryice/Testing/Relief from ASME Code NOTES:

RECIPIENT COPIES I REC P IENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-3 1 1 PD2-3-PD 1 1 WILLIAMSPJ. 1 1 INTERNAL: ACRS 1 1 AEOD/SPD/RAB 1 1 CENTER~01~ 1 1 NRR/DE/EMEB 1 1 NUDOCS-ABSTR'ACT 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 1 NOTE TO ALL "RIDS" RECIPIENTS:

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

TOTAL NUMBER OF- COPIES REQUIRED: LTTR 14 ENCL 13

/PE

<Qt

)

1 C

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 June 10, 1997 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 I INSERVICE INSPECTION AND REPAIR AND REPLACEMENTS FOR CYCLE 7 OPERATION

SUMMARY

REPORTS In accordance with paragraphs IWA-6220 and IWA-6230 of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, 1989 Edition, TVA is submitting the BFN Unit 3 summary reports for NRC review. The summary reports are for inservice inspection (NIS-1 Report), and repair and replacement activities (NIS-2 Report) for Unit 3 Cycle 7 operation.

TVA has determined that four components had NDE examination coverage limitations outside those specified in ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds,Section XI, Division 1." Three of the component's coverage limitations were addressed by BFN Unit 3 Request for Relief 3-ISI-4, (Integrally Welded Attachments) submitted by TVA letter dated January 22, 1997. A fourth component, the Reactor Pressure Vessel (RPV) Head Nozzle weld N6A (Code Category B-D), had a calculated NDE inspection coverage of 51.4 percent. The limitations encountered during the performance of the ultrasonic (UT) examination were caused by component configuration. The nozzle head contours limit the 970b'L70321 970b10 f]

- -"-'Ã2 - - , IIIIIIIIIIIIIIIII!IIIIIIIIIIIIIIIIIIIIII

U.S. Nuclear Regulatory Commission Page 2 June 10, 1997 accessible UT examination volume. As a result, TVA will submit a request for relief to address the reduced NDE examination coverage for this component by August 15, 1997.

TVA encountered similar NDE accessibility problems on the Unit 2 RPV Head nozzle (N6) and submitted request for relief ISI-2-3 by letter dated February 22, 1994. NRC accepted TVA's request for relief by letter dated November 29,- 1995.

Enclosure 1 contains the BFN Unit 3 inservice inspection summary report for Code Class 1 and 2 pressure retaining components and their supports. Enclosure 2 contains the repair and replacements report for Code Class 1 and 2 components and supports. Additionally, enclosure 3 provides a summary of the commitment contained in this letter.

If you have any questions regarding these reports, please contact me at (205) 729-2636.

S'er y, T. E.

Manage of Licensing and dustry Affair Enclosures cc (Enclosures):

Mr. Mark S. Lesser, 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 Mr. J. F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852

Ql <gal.