ML061570234
| ML061570234 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 06/16/2006 |
| From: | Moroney B T NRC/NRR/ADRO/DORL/LPLD |
| To: | Stall J A Florida Power & Light Co |
| Moroney B T, NRR/DORL, 415-3974 | |
| References | |
| TAC MC9192 | |
| Download: ML061570234 (4) | |
Text
June 16, 2006Mr. J. A. StallSenior Vice President, Nuclear and Chief Nuclear Officer Florida Power and Light Company P.O. Box 14000 Juno Beach, Florida 33408-0420
SUBJECT:
ST. LUCIE PLANT, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATIONREGARDING 2005 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MC9192)
Dear Mr. Stall:
By letters dated February 11, 2005 (Agencywide Documents Access and Management SystemAccession Number ML0530550032), June 15, 2005 (ML051720461), and November 28, 2005 (ML053410482), Florida Power & Light Company, et al. (the licensee), submitted information summarizing the results of the 2005 steam generator tube inspections at St. Lucie Unit 2.
These inspections were performed during the SL2-15 refueling outage. In addition to these reports, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference callconcerning the 2005 steam generator tube inspections at St. Lucie Unit 2. This conference call was summarized by the staff in a letter dated April 8, 2005 (ML051030078).In order to complete its review of the SG inspection reports, the NRC staff has determi ned thatmore information is needed. Enclosed is the Request for Additional Information. This request was discussed with Mr. Ken Frehafer of your staff on May 30, 2006, and it was agreed that a response would be provided within 60 days from the receipt of this letter. If you have any questions, please feel free to contact me at 301-415-3974.Sincerely,/RA/Brendan T. Moroney, Project ManagerPlant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-389
Enclosure:
As stated cc w/encl: See next page Mr. J. A. StallST. LUCIE PLANTFlorida Power and Light Company cc:Mr. William E. Webster Vice President, Nuclear Operations Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420 Senior Resident Inspector St. Lucie Plant U.S. Nuclear Regulatory Commission P.O. Box 6090 Jensen Beach, Florida 34957 Craig Fugate, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 M. S. Ross, Managing Attorney Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420
Marjan Mashhadi, Senior Attorney Florida Power & Light Company 801 Pennsylvania Avenue, NW.
Suite 220 Washington, DC 20004Mr. Douglas Anderson County Administrator St. Lucie County 2300 Virginia Avenue Fort Pierce, Florida 34982
Mr. William A. Passetti, Chief Department of Health Bureau of Radiation Control 2020 Capital Circle, SE, Bin #C21 Tallahassee, Florida 32399-1741Mr. Gordon L. Johnston Acting Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000Mr. Christopher R. CostanzoActing Plant General Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957Mr. Terry PattersonLicensing Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957Mark Warner, Vice PresidentNuclear Operations Support Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420Mr. Rajiv S. KundalkarVice President - Nuclear Engineering Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408-0420Mr. J. KammelRadiological Emergency Planning Administrator Department of Public Safety 6000 Southeast Tower Drive Stuart, Florida 34997Mr. Bill ParksActing Operations Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000 June 16, 2006Mr. J. A. Stall Senior Vice President, Nuclear and Chief Nuclear Officer Florida Power and Light Company P.O. Box 14000 Juno Beach, Florida 33408-0420
SUBJECT:
ST. LUCIE PLANT, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATIONREGARDING 2005 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MC9192)
Dear Mr. Stall:
By letters dated February 11, 2005 (Agencywide Documents Access and Management SystemAccession Number ML0530550032), June 15, 2005 (ML051720461), and November 28, 2005 (ML053410482), Florida Power & Light Company, et al. (the licensee), submitted information summarizing the results of the 2005 steam generator tube inspections at St. Lucie Unit 2.
These inspections were performed during the SL2-15 refueling outage. In addition to these reports, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference callconcerning the 2005 steam generator tube inspections at St. Lucie Unit 2. This conference call was summarized by the staff in a letter dated April 8, 2005 (ML051030078).In order to complete its review of the SG inspection reports, the NRC staff has determi ned thatmore information is needed. Enclosed is the Request for Additional Information. This request was discussed with Mr. Ken Frehafer of your staff on May 30, 2006, and it was agreed that a response would be provided within 60 days from the receipt of this letter. If you have any questions, please feel free to contact me at 301-415-3974.Sincerely,/RA/Brendan T. Moroney, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-389
Enclosure:
As stated cc w/encl: See next page Distribution:PUBLICLPL2-2 R/FRidsNrrPMBMoroneyRidsNrrDorlLpl2-2RidsNrrLABClaytonRidsOgcRpRidsAcrsAcnwMailCenter RidsNrrDciCsgbRidsRgn2MailCenter MYoder, NRRADAMS ACCESSION No.: ML061570234 NRR-088OFFICELPL2-2/PMLPL2-2/LACSGB/BCLPL2-2/BCNAMEBMoroneyBClaytonEMurphy (Acting)by memo datedMMarshallDATE 6 / 8 /066 / 7 /063 / 19 /066 / 16 /06OFFICIAL RECORD COPY REQUEST FOR ADDITIONAL INFORMATIONST. LUCIE NUCLEAR PLANT, UNIT 22005 STEAM GENERATOR TUBE INSPECTIONS1. During the 2005 steam generator tube inspections a number of indications were codedas retest for clarification (RCL) because they were identified with a rotating probe as it was being removed from the tube at a rate greater than the rate at which the probe isqualified. The indications in question had not been identified during bobbin coil inspection. The Nuclear Regulatory Commission staff discussed these indications with representatives from St. Lucie during a conference call at the time of the outage. Duringthe call the staff made several observations concerning the disposition of these flaws (refer to pages 5 and 6 of the Conference Call Summary dated, April 8, 2005 (ML50730197)). In light of these observations, summarize your basis for the approach taken to disposition the RCLs during your 2005 inspections.2. A freespan axial indication was identified in the square bend region of steamgenerator B (R44C130). Has freespan cracking been identified in areas other than the square bend? If so, discuss the locations of the indications and the number of tubes affected.3. Please discuss whether any crack-like indications were identified in the u-bend region ofthe low row tubes. If so, discuss the location and orientation of the indications and the basis for not expanding the scope of the inspection.4. Please discuss whether any crack-like indications were identified in dents or dings? Ifso, discuss the size, location, and orientation of the flaw and the voltage amplitude of the dent/ding.5. It is the staff's understanding that axial cracks have been identified in wear scars atSt. Lucie 2. Please discuss whether there are any trends associated with the development of these cracks. For example, are the cracks more prevalent in the hot-leg or cold-leg side of the steam generator? Are the cracks associated with deeper wearscars?6. Please discuss whether any crack-like indications were identified on the cold-leg side ofthe steam generator other than those identified at the eggcrate support and the diagonalstrap.Enclosure