ML080430486

Request for Additional Information Regarding the 2006 Steam Generator Tube Inspection

ML080430486
Person / Time
Site:	Turkey Point
Issue date:	02/21/2008
From:	Mozarfari B NRC/NRR/ADRO/DORL/LPLII-2
To:	Stall J Florida Power & Light Co
Mozafari B, NRR/ADRO/DORL, 415-2020
References
TAC MD6875
Download: ML080430486 (4)

Text

February 21, 2008 Mr. J. A. Stall Senior Vice President Nuclear and Chief Nuclear Officer Florida Power and Light Company P.O. Box 14000 Juno Beach, FL 33408-0420

SUBJECT:

TURKEY POINT NUCLEAR PLANT, UNIT 4 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE 2006 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD6875)

Dear Mr. Stall:

By letter dated March 8, 2007 (ML070710304), Florida Power and Light Company (the licensee) submitted information pertaining to the 2006 steam generator tube inspection performed at Turkey Point Unit 4 during the November 2006 refueling outage.

The Nuclear Regulatory Commission staff has reviewed the Turkey Point Unit 4 information and has determined that additional information is required to complete the review.

This request was discussed with members of your staff and as a result of the teleconference on February 13, 2008, and Mr. Paul Infanger agreed that a response would be provided by March 19, 2008.

If you have any questions, please contact me at (301) 415-2020.

Sincerely,

/RA/

Brenda Mozafari, Senior Project Manager, Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-251

Enclosure:

Request for Additional Information Cc w/encl: See next page

February 21, 2008 Mr. J. A. Stall Senior Vice President Nuclear and Chief Nuclear Officer Florida Power and Light Company P.O. Box 14000 Juno Beach, FL 33408-0420

SUBJECT:

TURKEY POINT NUCLEAR PLANT, UNIT 4 - REQUEST FOR ADDITIONAL INFORMATION REGARDING THE 2006 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD6875)

Dear Mr. Stall:

By letter dated March 8, 2007 (ML070710304), Florida Power and Light Company (the licensee) submitted information pertaining to the 2006 steam generator tube inspection performed at Turkey Point Unit 4 during the November 2006 refueling outage.

The Nuclear Regulatory Commission staff has reviewed the Turkey Point Unit 4 information and has determined that additional information is required to complete the review. The information This request was discussed with members of your staff and as a result of the teleconference on February 13, 2008, and Mr. Paul Infanger agreed that a response would be provided by March 19, 2008.

If you have any questions, please contact me at (301) 415-2020.

Sincerely,

/RA/

Brenda Mozafari, Senior Project Manager, Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-251

Enclosure:

Request for Additional Information cc w/encl: See next page Distribution:

PUBLIC LPL2-2 R/F RidsNrrPMBMozafari RidsNrrLABClayton RidsNrrDorlLpl2-2 RidsOgcRp RidsAcrsAcnwMailCenter RidsRgn2MailCenter RidsNrrDorl RidsNrrDci RidsOEMailCenter RidsEdoMailCenter RidsNrrDciCsgb KKarwoski, NRR EWong, NRR Accession Number: ML080430486 OFFICE LPL2-2/PM LPL2-2/LA CSGB/BC LPL2-2/BC NAME BMozafari BClayton AHiser memo TBoyce dated DATE 2/20/08 2/19/08 01/14/08 2/21/08 OFFICIAL RECORD COPY

Florida Power and Light Company TURKEY POINT PLANT cc:

Mr. Mano Nazar Mr. William A. Passetti, Chief Senior Vice President Department of Health and Nuclear Chief Operating Officer Bureau of Radiation Control South Region 2020 Capital Circle, SE, Bin #C21 Florida Power & Light Company Tallahassee, Florida 32399-1741 P.O. Box 14000 Juno Beach, FL 33408 Mr. Craig Fugate, Director Division of Emergency Preparedness M. S. Ross, Managing Attorney Department of Community Affairs Florida Power & Light Company 2740 Centerview Drive P.O. Box 14000 Tallahassee, Florida 32399-2100 Juno Beach, FL 33408-0420 Attorney General Marjan Mashhadi, Senior Attorney Department of Legal Affairs Florida Power & Light Company The Capitol 801 Pennsylvania Avenue, NW. Tallahassee, Florida 32304 Suite 220 Washington, DC 20004 Michael O. Pearce Plant General Manager William Jefferson, Jr. Turkey Point Nuclear Plant Site Vice President Florida Power and Light Company Turkey Point Nuclear Plant 9760 SW. 344th Street Florida Power and Light Company Florida City, FL 33035 9760 SW. 344th Street Florida City, FL 33035 James Connolly, Licensing Manager Florida Power and Light Company County Manager Turkey Point Nuclear Plant Miami-Dade County 9760 SW. 344th Street 111 Northwest 1 Street, 29th Floor Florida City, FL 33035 Miami, Florida 33128 Don E. Grissette Senior Resident Inspector Vice President, Nuclear Training and Turkey Point Nuclear Plant Performance Improvement U.S. Nuclear Regulatory Commission Florida Power and Light Company 9762 SW. 344th Street P.O. Box 14000 Florida City, Florida 33035 Juno Beach, FL 33408-0420 Mr. Rajiv S. Kundalkar Vice President, Nuclear Technical Services Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420

REQUEST FOR ADDITIONAL INFORMATION 2006 STEAM GENERATOR TUBE INSPECTIONS TURKEY POINT NUCLEAR POWER STATION, UNIT 4 DOCKET NUMBER 50-251

1. In Florida Power & Light Company letter dated March 8, 2007, the top table in NIS-BB indicates that six tubes in steam generator A had indications greater than 40-percent through-wall. Presumably these six tubes are the tubes with indications of wear near the top of the tubesheet on the cold-leg side of the steam generator. Please discuss why the six tubes in the top table were not listed as preventively plugged (see related question below).

2. It was noted that a foreign object search and retrieval (FOSAR) and secondary side inspection established that a foreign object was no longer present at the location where six tubes had experienced wear. Please discuss the scope and results of any secondary side inspections including FOSAR.

3. It was indicated that the wear signals in six tubes were in close proximity to the expansion transition and, as such, did not allow sizing using a qualified technique; therefore, all six tubes were conservatively (preventively) plugged and none of the indications required in situ pressure testing. If the indications could not be reliably sized due to their proximity to the expansion transition (and presumably the top of the tubesheet), discuss how it was concluded that in situ testing was not required and that the indications depths were less than the plugging limit (i.e., since the tubes were conservatively (preventively) plugged).

4. Please discuss how the six tubes with wear scars near the top of the tubesheet on the cold-leg side of the steam generator were identified (bobbin probe, rotating probe, both probes). If the indications were not detected with the bobbin probe, please discuss the scope (and results) of any rotating probe examinations performed near the top of the tubesheet on the cold leg side of the steam generator (or why such examinations were not performed).

5. The Nuclear Regulatory Commission staff could not locate the 15-day report that was previously required to be submitted by Technical Specification 4.4.5.5.a. Please submit another copy of this report.

Enclosure