ML070180063

Review of Steam Generator Tube Preservice Inspection Report for Refueling Outage 19

ML070180063
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/23/2007
From:	Farideh Saba NRC/NRR/ADRO/DORL/LPLIV
To:	Forbes J Entergy Operations
Saba F, NRR/DORL/LPL4, 301-415-1447
References
TAC MD2718
Download: ML070180063 (4)

Text

January 23, 2007 Mr. Jeffrey S. Forbes Site Vice President Arkansas Nuclear One Entergy Operations, Inc.

1448 S. R. 333 Russellville, AR 72802

SUBJECT:

ARKANSAS NUCLEAR ONE, UNIT 1 - REVIEW OF STEAM GENERATOR TUBE PRESERVICE INSPECTION REPORT FOR REFUELING OUTAGE 19 (TAC NO. MD2718)

Dear Mr. Forbes:

By letter dated June 14, 2006, Entergy Operations, Inc. (the licensee), provided the 180-day steam generator (SG) preservice inspection report for refueling outage (RFO) 19 in accordance with Technical Specification (TS) 5.6.7. The Arkansas Nuclear One, Unit 1 (ANO-1), SGs were replaced during RFO 19. Additional information regarding the replacement SGs is provided in a conference call summary dated March 9, 2006.

The Nuclear Regulatory Commission (NRC) staff has completed its review of the information provided by the licensee and concludes that the licensee provided the information required by ANO-1 TSs and that no additional follow-up is required at this time. The NRC staffs review is enclosed.

If you have any questions regarding this matter, please contact me at (301) 415-1447.

Sincerely,

/RA/

Farideh E. Saba, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-313

Enclosure:

As stated cc w/encl: See next page

ML070180063 OFFICE NRR/LPL4/PM NRR/LPL4/LA NRR/CSGB/BC NRR/LPL4/BC NAME FSaba LFeizollahi AHiser DTerao DATE 1/22/07 1/22/07 9/29/06 1/23/07 Arkansas Nuclear One cc:

Executive Vice President Section Chief, Division of Health

& Chief Operating Officer Emergency Management Section Entergy Operations, Inc. Arkansas Department of Health and P.O. Box 31995 Human Services Jackson, MS 39286-1995 4815 West Markham Street, Slot 30 Little Rock, AR 72205-3867 General Manager Plant Operations Senior Resident Inspector Entergy Operations, Inc. U.S. Nuclear Regulatory Commission Arkansas Nuclear One P.O. Box 310 1448 SR 333 London, AR 72847 Russellville, AR 72802 Regional Administrator, Region IV Director, Nuclear Safety Assurance U.S. Nuclear Regulatory Commission Entergy Operations, Inc. 611 Ryan Plaza Drive, Suite 400 Arkansas Nuclear One Arlington, TX 76011-8064 1448 SR 333 Russellville, AR 72802 County Judge of Pope County 100 W. Main Street Manager, Licensing Russellville, AR 72801 Entergy Operations, Inc.

Arkansas Nuclear One Vice President, Operations Support 1448 SR 333 Entergy Operations, Inc.

Russellville, AR 72802 P.O. Box 31995 Jackson, MS 39286-1995 Director, Nuclear Safety & Licensing Entergy Operations, Inc.

1340 Echelon Parkway Jackson, MS 39213-8298 Section Chief, Division of Health Radiation Control Section Arkansas Department of Health and Human Services 4815 West Markham Street, Slot 30 Little Rock, AR 72205-3867 December 2006

ARKANSAS NUCLEAR ONE, UNIT 1,

SUMMARY

OF THE STAFFS REVIEW OF THE REFUELING OUTAGE 19 STEAM GENERATOR TUBE PRESERVICE INSPECTION REPORT TAC NO. MD2718 DOCKET NO. 50-313 By letter dated June 14, 2006 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML061730358), Entergy Operations, Inc. (the licensee), provided the 180-day steam generator (SG) preservice inspection report for refueling outage (RFO) 19 in accordance with Technical Specification 5.6.7. The Arkansas Nuclear One, Unit 1 (ANO-1), SGs were replaced during RFO 19. Additional information regarding the replacement SGs is provided in a conference call summary dated March 9, 2006 (ADAMS Accession No. ML060590367).

ANO-1 has two Enhanced Once-Through SGs manufactured by AREVA. Each SG has 15,597 thermally-treated Alloy 690 tubes with an outside diameter of 0.625 inch and a nominal wall thickness of 0.037 inch. The tubes are hydraulically expanded for the full depth of the tubesheet at each end. The tubes are supported by 15 stainless steel support plates with a broached trefoil-hole design.

The licensee provided the scope, extent, methods, and results of the ANO-1 SG tube preservice inspection in the documents referenced above. The licensee indicated that no tubes were plugged as a result of the preservice inspection.

Based on a review of the information provided, the Nuclear Regulatory Commission (NRC) staff concludes that the licensee provided the information required by ANO-1 TSs. In addition, the NRC staff concludes that there are no technical issues that warrant follow up action at this time, since the inspections appear to be consistent with the objective of detecting potential tube degradation and the inspection results appear to be consistent with industry operating experience at similarly designed and operated units.