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{{#Wiki_filter:February 8, 2008  
{{#Wiki_filter:February 8, 2008 Mr. 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
 
Mr. 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:==
==SUBJECT:==
St. LUCIE UNIT 2 - REVIEW OF THE 2006 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD5523)  
St. LUCIE UNIT 2 - REVIEW OF THE 2006 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD5523)


==Dear Mr. Stall:==
==Dear Mr. Stall:==


By letters dated May 4, 2007, September 20, June 28, and May 18, 2006, Florida Power & Light Company (the licensee) submitted information summarizing the results of the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call concerning the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. This conference call was summarized by the NRC staff in a letter dated August 3, 2006. A public meeting was also held prior to the SL2-16 outage to discuss the licensee's steam generator inspection plan. This meeting was summarized in a document dated May 11, 2006.  
By letters dated May 4, 2007, September 20, June 28, and May 18, 2006, Florida Power & Light Company (the licensee) submitted information summarizing the results of the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call concerning the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. This conference call was summarized by the NRC staff in a letter dated August 3, 2006. A public meeting was also held prior to the SL2-16 outage to discuss the licensees steam generator inspection plan. This meeting was summarized in a document dated May 11, 2006.
 
Based on a review of the material provided by the licensee, the NRC staff concludes that the licensee provided the information required by its technical specifications. In addition, the NRC staff did not identify any issues that warrant additional follow-up.
Based on a review of the material provided by the licensee, the NRC staff concludes that the licensee provided the information required by its technical specifications. In addition, the NRC staff did not identify any issues that warrant additional follow-up.  
Further details on the bases for the NRC staff=s conclusions are contained in the enclosed safety evaluation. If you have any questions regarding this issue, please feel free to contact me, at (301) 415-2020.
 
Sincerely,
Further details on the bases for the NRC staff
                                                /RA/
=s conclusions are contained in the enclosed safety evaluation. If you have any questions regarding this issue, please feel free to contact me, at (301) 415-2020.  
Brenda L. Mozafari, Senior Project Manager Project Directorate II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-389
 
Sincerely,       /RA/ Brenda L. Mozafari, Senior Project Manager Project Directorate II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation  
 
Docket No. 50-389  


==Enclosure:==
==Enclosure:==
Evaluation  
Evaluation cc w/enclosure: See next page
 
cc w/enclosure: See next page
 
ML080330028    NRR-106 OFFICE LPLII-2/PM LPLII-2/LA DCI/CSGB LPLII-2/BC NAME BMozafari BClayton AHiser By memo dated TBoyce DATE  02/07/08  02/06/08  9/26/07  02/08/08 ENCLOSURE EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION STEAM GENERATOR TUBE INSPECTION REPORTS FOR FALL 2006 ST. LUCIE UNIT 2 DOCKET NO. 50-389
 
By letters dated May 4, 2007 (ML071350383), September 20, 2006 (ML062710350),
June 28, 2006 (ML061870466) and May 18, 2006, (ML061520494), Florida Power & Light (the licensee) submitted information summarizing the results of the 2006 steam generator (SG) tube inspections at St. Lucie Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission staff participated in a conference call concerning the 2006 SG tube inspections at St. Lucie Unit 2. This conference call was summarized by the staff in a letter dated August 3, 2006 (ML062060280). A public meeting was also held prior to the SL2-16 outage to discuss the licensee's SG inspection plan. This meeting was summarized in a document dated May 11, 2006 (ML061250260).


ML080330028                                          NRR-106 OFFICE      LPLII-2/PM          LPLII-2/LA      DCI/CSGB            LPLII-2/BC NAME        BMozafari            BClayton        AHiser              TBoyce By memo dated DATE 02/07/08            02/06/08        9/26/07              02/08/08 EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION STEAM GENERATOR TUBE INSPECTION REPORTS FOR FALL 2006 ST. LUCIE UNIT 2 DOCKET NO. 50-389 By letters dated May 4, 2007 (ML071350383), September 20, 2006 (ML062710350),
June 28, 2006 (ML061870466) and May 18, 2006, (ML061520494), Florida Power & Light (the licensee) submitted information summarizing the results of the 2006 steam generator (SG) tube inspections at St. Lucie Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission staff participated in a conference call concerning the 2006 SG tube inspections at St. Lucie Unit 2. This conference call was summarized by the staff in a letter dated August 3, 2006 (ML062060280). A public meeting was also held prior to the SL2-16 outage to discuss the licensees SG inspection plan. This meeting was summarized in a document dated May 11, 2006 (ML061250260).
St. Lucie Unit 2 had two Combustion Engineering Model 3410 SGs. The mill annealed Alloy 600 SG tubes had an outside diameter of 3/4 inch and a nominal wall thickness of 0.048 inch.
St. Lucie Unit 2 had two Combustion Engineering Model 3410 SGs. The mill annealed Alloy 600 SG tubes had an outside diameter of 3/4 inch and a nominal wall thickness of 0.048 inch.
The tubes were explosively expanded for the full depth of the tubesheet at each end and supported by a number of carbon steel lattice grid (i.e., eggcrate) tube supports, diagonal bars, and vertical straps.  
The tubes were explosively expanded for the full depth of the tubesheet at each end and supported by a number of carbon steel lattice grid (i.e., eggcrate) tube supports, diagonal bars, and vertical straps.
 
This was the last scheduled inspection of the original SGs. They were replaced during the refueling outage in the fall of 2007. The philosophy of plug on detection was used for all eddy current indications of degradation except for mechanical wear. Mechanical wear indications were sized and left in service if they were less than 35 percent through wall.
This was the last scheduled inspection of the original SGs. They were replaced during the refueling outage in the fall of 2007. The philosophy of "plug on detection" was used for all eddy current indications of degradation except for mechanical wear. Mechanical wear indications were sized and left in service if they were less than 35 percent through wall.  
The licensee was authorized to repair tubes using Alloy 800 tube sleeves. However, no tubes were repaired with this method at SL2 either prior to or during the 2006 outage.
 
During the outage, the licensee discovered that portions of two tubes received an incomplete rotating probe inspection during the 2005 outage. Assessments, including in situ pressure testing of one of those locations, indicated that the tubes had adequate integrity. Additional corrective actions taken in response to these findings are documented in the licensees June 28, 2006, letter.
The licensee was authorized to repair tubes using Alloy 800 tube sleeves. However, no tubes were repaired with this method at SL2 either prior to or during the 2006 outage.
 
During the outage, the licensee discovered that portions of two tubes received an incomplete rotating probe inspection during the 2005 outage. Assessments, including in situ pressure testing of one of those locations, indicated that the tubes had adequate integrity. Additional corrective actions taken in response to these findings are documented in the licensee's June 28, 2006, letter.  
 
The licensee provided the scope, extent, methods, and results of the SG tube inspections in the documents referenced above. In addition, the licensee described corrective actions (e.g., tube plugging or repair) taken in response to the inspection findings. Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by technical specifications. In addition, the NRC staff concludes that there are no technical issues that warrant follow-up action, because the inspections appeared to be consistent with the objective of detecting potential tube degradation and the inspection results appeared to be consistent with industry operating experience at similarly designed and operated units.
The licensee provided the scope, extent, methods, and results of the SG tube inspections in the documents referenced above. In addition, the licensee described corrective actions (e.g., tube plugging or repair) taken in response to the inspection findings. Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by technical specifications. In addition, the NRC staff concludes that there are no technical issues that warrant follow-up action, because the inspections appeared to be consistent with the objective of detecting potential tube degradation and the inspection results appeared to be consistent with industry operating experience at similarly designed and operated units.
Florida Power and Light Company  ST. LUCIE PLANT
ENCLOSURE
 
cc:
Mr. Mano Nazar Senior Vice President and Nuclear Chief Operating Officer South Region Florida Power & Light Company P.O. Box 14000 Juno Beach, FL 33408 
 
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 20004
 
Mr. 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  32399-1741
 
Mr. Gordon L. Johnston Site Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida  34957-2000 Mr. Christopher R. Costanzo Plant General Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida  34957
 
Mr. Terry Patterson Licensing Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida  34957
 
Don E. Grissette Vice President, Nuclear Training and Performance Improvement Florida Power & Light Company P.O. Box 14000 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
 
Mr. J. Kammel Radiological Emergency Planning Administrator Department of Public Safety 6000 Southeast Tower Drive Stuart, Florida 34997
 
Mr. Bill Parks Operations Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida  34957-2000


Mr. Seth B. Duston Training Manager St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000}}
Florida Power and Light Company        ST. LUCIE PLANT cc:
Mr. Mano Nazar                          Mr. Christopher R. Costanzo Senior Vice President                  Plant General Manager and Nuclear Chief Operating Officer St. Lucie Nuclear Plant South Region                            6351 South Ocean Drive Florida Power & Light Company          Jensen Beach, Florida 34957 P.O. Box 14000 Juno Beach, FL 33408                    Mr. Terry Patterson Licensing Manager Senior Resident Inspector              St. Lucie Nuclear Plant St. Lucie Plant                        6351 South Ocean Drive U.S. Nuclear Regulatory Commission      Jensen Beach, Florida 34957 P.O. Box 6090 Jensen Beach, Florida 34957            Don E. Grissette Vice President, Nuclear Training Craig Fugate, Director                  and Performance Improvement Division of Emergency Preparedness      Florida Power & Light Company Department of Community Affairs        P.O. Box 14000 2740 Centerview Drive                  Juno Beach, FL 33408-0420 Tallahassee, Florida 32399-2100 Mr. Rajiv S. Kundalkar M. S. Ross, Managing Attorney          Vice President - Nuclear Technical Services Florida Power & Light Company          Florida Power & Light Company P.O. Box 14000                          P.O. Box 14000 Juno Beach, FL 33408-0420              Juno Beach, FL 33408-0420 Marjan Mashhadi, Senior Attorney        Mr. J. Kammel Florida Power & Light Company          Radiological Emergency 801 Pennsylvania Avenue, NW.                Planning Administrator Suite 220                              Department of Public Safety Washington, DC 20004                    6000 Southeast Tower Drive Stuart, Florida 34997 Mr. Douglas Anderson County Administrator                    Mr. Bill Parks St. Lucie County                        Operations Manager 2300 Virginia Avenue                    St. Lucie Nuclear Plant Fort Pierce, Florida 34982              6351 South Ocean Drive Jensen Beach, Florida 34957-2000 Mr. William A. Passetti, Chief Department of Health                    Mr. Seth B. Duston Bureau of Radiation Control            Training Manager 2020 Capital Circle, SE, Bin #C21      St. Lucie Nuclear Plant Tallahassee, Florida 32399-1741        6351 South Ocean Drive Jensen Beach, Florida 34957-2000 Mr. Gordon L. Johnston Site Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000}}

Revision as of 06:21, 13 March 2020

Review of the 2006 (SL2-16) Steam Generator Tube Inspections
ML080330028
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 02/08/2008
From: Mozafari B
NRC/NRR/ADRO/DORL/LPLII-2
To: Stall J
Florida Power & Light Co
Mozafari B, NRR/ADRO/DORL, 415-2020
References
TAC MD5523
Download: ML080330028 (5)
v • d • e


Text

February 8, 2008 Mr. 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 UNIT 2 - REVIEW OF THE 2006 STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MD5523)

Dear Mr. Stall:

By letters dated May 4, 2007, September 20, June 28, and May 18, 2006, Florida Power & Light Company (the licensee) submitted information summarizing the results of the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call concerning the 2006 steam generator tube inspections at St. Lucie Plant, Unit 2. This conference call was summarized by the NRC staff in a letter dated August 3, 2006. A public meeting was also held prior to the SL2-16 outage to discuss the licensees steam generator inspection plan. This meeting was summarized in a document dated May 11, 2006.

Based on a review of the material provided by the licensee, the NRC staff concludes that the licensee provided the information required by its technical specifications. In addition, the NRC staff did not identify any issues that warrant additional follow-up.

Further details on the bases for the NRC staff=s conclusions are contained in the enclosed safety evaluation. If you have any questions regarding this issue, please feel free to contact me, at (301) 415-2020.

Sincerely,

/RA/

Brenda L. Mozafari, Senior Project Manager Project Directorate II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-389

Enclosure:

Evaluation cc w/enclosure: See next page

ML080330028 NRR-106 OFFICE LPLII-2/PM LPLII-2/LA DCI/CSGB LPLII-2/BC NAME BMozafari BClayton AHiser TBoyce By memo dated DATE 02/07/08 02/06/08 9/26/07 02/08/08 EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION STEAM GENERATOR TUBE INSPECTION REPORTS FOR FALL 2006 ST. LUCIE UNIT 2 DOCKET NO. 50-389 By letters dated May 4, 2007 (ML071350383), September 20, 2006 (ML062710350),

June 28, 2006 (ML061870466) and May 18, 2006, (ML061520494), Florida Power & Light (the licensee) submitted information summarizing the results of the 2006 steam generator (SG) tube inspections at St. Lucie Unit 2. These inspections were performed during the sixteenth refueling (SL2-16) outage. In addition to these reports, the U.S. Nuclear Regulatory Commission staff participated in a conference call concerning the 2006 SG tube inspections at St. Lucie Unit 2. This conference call was summarized by the staff in a letter dated August 3, 2006 (ML062060280). A public meeting was also held prior to the SL2-16 outage to discuss the licensees SG inspection plan. This meeting was summarized in a document dated May 11, 2006 (ML061250260).

St. Lucie Unit 2 had two Combustion Engineering Model 3410 SGs. The mill annealed Alloy 600 SG tubes had an outside diameter of 3/4 inch and a nominal wall thickness of 0.048 inch.

The tubes were explosively expanded for the full depth of the tubesheet at each end and supported by a number of carbon steel lattice grid (i.e., eggcrate) tube supports, diagonal bars, and vertical straps.

This was the last scheduled inspection of the original SGs. They were replaced during the refueling outage in the fall of 2007. The philosophy of plug on detection was used for all eddy current indications of degradation except for mechanical wear. Mechanical wear indications were sized and left in service if they were less than 35 percent through wall.

The licensee was authorized to repair tubes using Alloy 800 tube sleeves. However, no tubes were repaired with this method at SL2 either prior to or during the 2006 outage.

During the outage, the licensee discovered that portions of two tubes received an incomplete rotating probe inspection during the 2005 outage. Assessments, including in situ pressure testing of one of those locations, indicated that the tubes had adequate integrity. Additional corrective actions taken in response to these findings are documented in the licensees June 28, 2006, letter.

The licensee provided the scope, extent, methods, and results of the SG tube inspections in the documents referenced above. In addition, the licensee described corrective actions (e.g., tube plugging or repair) taken in response to the inspection findings. Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by technical specifications. In addition, the NRC staff concludes that there are no technical issues that warrant follow-up action, because the inspections appeared to be consistent with the objective of detecting potential tube degradation and the inspection results appeared to be consistent with industry operating experience at similarly designed and operated units.

ENCLOSURE

Florida Power and Light Company ST. LUCIE PLANT cc:

Mr. Mano Nazar Mr. Christopher R. Costanzo Senior Vice President Plant General Manager and Nuclear Chief Operating Officer St. Lucie Nuclear Plant South Region 6351 South Ocean Drive Florida Power & Light Company Jensen Beach, Florida 34957 P.O. Box 14000 Juno Beach, FL 33408 Mr. Terry Patterson Licensing Manager Senior Resident Inspector St. Lucie Nuclear Plant St. Lucie Plant 6351 South Ocean Drive U.S. Nuclear Regulatory Commission Jensen Beach, Florida 34957 P.O. Box 6090 Jensen Beach, Florida 34957 Don E. Grissette Vice President, Nuclear Training Craig Fugate, Director and Performance Improvement Division of Emergency Preparedness Florida Power & Light Company Department of Community Affairs P.O. Box 14000 2740 Centerview Drive Juno Beach, FL 33408-0420 Tallahassee, Florida 32399-2100 Mr. Rajiv S. Kundalkar M. S. Ross, Managing Attorney Vice President - Nuclear Technical Services Florida Power & Light Company Florida Power & Light Company P.O. Box 14000 P.O. Box 14000 Juno Beach, FL 33408-0420 Juno Beach, FL 33408-0420 Marjan Mashhadi, Senior Attorney Mr. J. Kammel Florida Power & Light Company Radiological Emergency 801 Pennsylvania Avenue, NW. Planning Administrator Suite 220 Department of Public Safety Washington, DC 20004 6000 Southeast Tower Drive Stuart, Florida 34997 Mr. Douglas Anderson County Administrator Mr. Bill Parks St. Lucie County Operations Manager 2300 Virginia Avenue St. Lucie Nuclear Plant Fort Pierce, Florida 34982 6351 South Ocean Drive Jensen Beach, Florida 34957-2000 Mr. William A. Passetti, Chief Department of Health Mr. Seth B. Duston Bureau of Radiation Control Training Manager 2020 Capital Circle, SE, Bin #C21 St. Lucie Nuclear Plant Tallahassee, Florida 32399-1741 6351 South Ocean Drive Jensen Beach, Florida 34957-2000 Mr. Gordon L. Johnston Site Vice President St. Lucie Nuclear Plant 6351 South Ocean Drive Jensen Beach, Florida 34957-2000

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