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MONTHYEARML1019000622010-07-14014 July 2010 Summary of Telephone Conference Call with Duke Energy Carolinas, Llc., Regarding 2009 Steam Generator Tube Inspections Catawba, Unit 2 Project stage: Other 2010-07-14
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Category:Conference/Symposium/Workshop Paper
MONTHYEARML1019000622010-07-14014 July 2010 Summary of Telephone Conference Call with Duke Energy Carolinas, Llc., Regarding 2009 Steam Generator Tube Inspections Catawba, Unit 2 2010-07-14
[Table view] Category:Letter
MONTHYEARIR 05000413/20230042024-02-0202 February 2024 Integrated Inspection Report 05000413-2023004 and 05000414-2023004 ML24005A2512024-01-26026 January 2024 Exemption from Select Requirements of 10 CFR Part 73 - Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting ML23317A3462023-11-14014 November 2023 Duke Fleet - Correction Letter to License Amendment Nos. 312 & 340 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000413/20230102023-10-11011 October 2023 NRC Inspection Report 05000413/2023010 and 05000414/2023010 ML23256A0882023-09-25025 September 2023 Issuance of Alternative to Steam Generator Welds ML23195A0782023-08-29029 August 2023 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-554, Revision 1 IR 05000413/20230052023-08-25025 August 2023 Updated Inspection Plan for Catawba Nuclear Station Units 1 and 2 (Report 05000413/2023005 and 05000414/2023005) ML23233A1692023-08-17017 August 2023 EN 56683 - Curtiss Wright, Interim Notification Report for PotentialPurt2l IR 05000413/20230022023-07-25025 July 2023 Integrated Inspection Report 05000413/2023002 and 05000414/2023002 ML23207A0762023-07-14014 July 2023 EN 56557 - Update to Part 21 Report Re Potential Defect with Trane External Auto/Stop Emergency Stop Relay Card Pn: XI2650728-06 ML23237A2672023-06-13013 June 2023 June 13, 2002 - Meeting Announcement - McGuire and Catawba Nuclear Stations 50-369, 50-370 and 50-413, 50-414 ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined IR 05000413/20230012023-05-0505 May 2023 Integrated Inspection Report 05000413/2023001 and 05000414/2023001 ML23118A0762023-05-0101 May 2023 Approval for Use of Specific Provision of a Later Edition of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, Section XI IR 05000413/20230112023-04-25025 April 2023 Focused Engineering Inspection Report 05000413/2023011 and 05000414/2023011 ML23107A2542023-04-14014 April 2023 301 Examination Report Letter and Report (Merged) ML22332A4932023-03-10010 March 2023 William States Lee III 1 and 2 - Issuance of Amendments Regarding the Relocation of the Emergency Operations Facility IR 05000413/20220062023-03-0101 March 2023 Annual Assessment Letter for Catawba Nuclear Station, Units 1 and 2 (NRC Inspection Report 05000413/2022006 and 05000414/2022006) IR 05000413/20234012023-03-0101 March 2023 Security Baseline Inspection Report 05000413 2023401 and 05000414 2023401 IR 05000413/20233012023-02-17017 February 2023 Operator Licensing Examination Approval 05000413/2023301 and 05000414/2023301 IR 05000413/20220042023-01-31031 January 2023 Integrated Inspection Report 05000413/2022004 and 05000414/2022004 IR 05000413/20220112022-12-15015 December 2022 Biennial Problem Identification and Resolution Inspection Report 05000413/2022011 and 05000414/2022011 ML22356A0512022-12-14014 December 2022 Curtiss-Wright Nuclear Division, Letter Regarding Potential Efect in a Configuration of the 11/2 Inch Quick Disconnect Connector Cable Assemblies Supplied to Duke Energy (See Attached Spreadsheet) for a Total of 460 of Connectors Only Suppl ML22096A0032022-11-18018 November 2022 McGuire Nuclear Station and Shearon Harris Nuclear Power Plant Authorization of RA-19-0352 Regarding Use of Alternative for RPV Head Closure Stud Examinations IR 05000413/20224032022-11-17017 November 2022 Cyber Security Inspection Report 05000413/2022403 and 05000414/2022403 (Public) ML22256A2532022-11-14014 November 2022 Issuance of Amendments Regarding the Adoption of Technical Specifications Task Force Traveler TSTF-541, Rev. 2 ML22319A0942022-11-10010 November 2022 EN 56219 - Flowserve. 10 CFR Part 21 Report 38878-8 Solenoid Valve at Duke, Catawba Flowserve Evaluation 105 IR 05000414/20220032022-10-31031 October 2022 Integrated Inspection Report 05000414/2022003 and 05000414/2022003 IR 05000413/20224022022-10-28028 October 2022 Security Baseline Inspection Report 05000413 2022402 and 05000414 2022402 ML22297A2642022-10-25025 October 2022 Project Manager Assignment ML22276A2492022-10-25025 October 2022 Completion of License Renewal Commitment No. 10, Aging Management of Environmentally Assisted Fatigue ML22303A0052022-10-24024 October 2022 EN 56178 - Tioga Final. LTR-TP-22-29 2021 10CFR Part 21 Improper Notification of NRC ML22258A0302022-09-15015 September 2022 Evacuation Time Estimate Reports ML22242A0022022-09-12012 September 2022 Issuance of Amendments to Adopt TSTF 569, Revision 2, Revise Response Time Testing Definition ML22231B1362022-09-0101 September 2022 Review of the Draft Environmental Assessment and Findings of No Significant Impact for Catawba Nuclear Station, H.B. Robinson Steam Electric Plant, and Oconee Nuclear Station Independent Spent Fuel Storage Installation Decommissioning Fundi ML22303A0042022-08-31031 August 2022 Final Report Notification Pursuant to 10 CFR Part 21.21, Regarding Supply of 6 NPS Sch. 40 Seamless Stainless-Steel Pipe; Manufacturer: Maxim Tubes Company Pvt. Ltd.; Heat No: N200309AW01, SR No: 7; 9 Pcs; 180 Feet Total Procured as Unquali IR 05000413/20220052022-08-26026 August 2022 Updated Inspection Plan for Catawba Nuclear Station, Units 1 and 2 - NRC Inspection Report 05000413/2022005 and 05000414/2022005 ML22217A0792022-08-0303 August 2022 301, Corporate Notification Letter (210-day Ltr) IR 05000413/20220022022-07-29029 July 2022 Integrated Inspection Report 05000413/2022002 and 05000414/2022002 IR 07200045/20220012022-07-26026 July 2022 Operation of an Independent Spent Fuel Storage Installation Report 07200045/2022001 ML22215A2502022-07-25025 July 2022 EN 55960 - Update - Curtiss Wright IR 05000413/20220102022-07-21021 July 2022 Design Basis Assurance Inspection (Programs) Inspection Report 05000413/2022010 and 05000414/2022010 ML22195A2432022-07-19019 July 2022 Request for Withholding Information from Public Disclosure Regarding Reactor Vessel Closure Head Repair Alternative ML22164A0362022-07-19019 July 2022 Mcguire Nuclear Station, Units 1 and 2; Issuance of Amendments to Revise the Conditional Exemption of the End-Of-Cycle Moderator Temperature Coefficient Measurement Methodology (EPID L-2021-LLA-0198) Public ML22199A2552022-07-0606 July 2022 Ds Catawba 2022 RQ Inspection Notification Letter ML22222A0092022-07-0101 July 2022 EN 55974 - Flowserve, Part 21 Report Re Solenoid Coil Failure of Model 38878-8 Solenoid Valve at Catawba Nuclear Station for Use on FWIV Actuator ML22175A0342022-06-28028 June 2022 Information Request for the Cyber-Security Baseline Inspection Notification to Perform Inspection 05000413/2022403 and 05000414/2022403 ML22046A0222022-06-14014 June 2022 Issuance of Amendments to Adopt TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO ML22111A3572022-05-16016 May 2022 Letter Issuing Exemption to Catawba IR 05000414/20220012022-04-28028 April 2022 Integrated Inspection Report 05000413/ 2022001 and 05000414/2022001 2024-02-02
[Table view] Category:Meeting Summary
MONTHYEARML23118A2852023-05-0202 May 2023 Public Meeting Summary - 2022 Annual Assessment Meeting Regarding Catawba Nuclear Station, McGuire Nuclear and Oconee Nuclear Station ML22335A4012022-12-15015 December 2022 Summary of December 8, 2022, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Proposed License Amendment Request to Revise TS 3.7.11 Control Room Area Chilled Water System (Cracws) ML22129A0062022-05-10010 May 2022 Summary of April 20, 2022, Meeting with Duke Energy Progress, LLC, to Discuss Proposed License Amendment Request to Revise Reactor Coolant System Pressure Isolation Valve Operational Leakage Surveillance Requirement Frequency (L-2022-LRM 00 ML22094A1112022-04-0404 April 2022 Public Meeting Summary 2021 Annual Assessment Meeting Catawba Dockets Nos. 50-413 and 50-414; McGuire No. 50-369 and 50-370; Oconee. 50-269, 50-270, and 50-287 ML21341A5542021-12-29029 December 2021 Summary of November 29, 2021, Meeting with Duke Energy Progress, LLC and Duke Energy Carolinas, LLC to Discuss a Planned License Amendment Request to Relocate ML21342A0902021-12-14014 December 2021 Summary of December 7, 2021, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Reactor Vessel Closure Head Nozzle Repair for Catawba Nuclear Station, Unit 2 ML21236A2832021-09-22022 September 2021 Summary of August 30, 2021, Public Meeting with Duke Energy Carolinas, LLC, Regarding Pre-Application Meeting to Discuss Moderator Temperature Coefficient Methodology Revision ML21133A0042021-05-26026 May 2021 Summary of Conference Call Regarding the Spring 2021 Steam Generator Tube Inspections (Epid: L-2021-Nfo-0004) ML21116A0662021-04-22022 April 2021 C2R24 Relief Request Pre-Submittal Slides Call 2 ML21099A0932021-04-0909 April 2021 Public Meeting Summary - 2020 Annual Assessment Meeting Regarding Catawba, McGuire, and Oconee Nuclear Stations ML20141L4172020-05-20020 May 2020 EOC Public Meeting Summary ML19220A6702019-08-26026 August 2019 Summary of August 7, 2019, Meeting with Duke Energy Progress, LLC and Duke Energy Carolinas, LLC to Discuss a Proposed License Amendment Request for a Common Emergency Plan ML19087A0622019-04-11011 April 2019 Summary of March 25, 2019, Public Teleconference with Duke Energy to Discuss the Request for Additional Information Response Regarding the Proposed Alternative to the Depth Sizing Qualification Requirement (Duke Energy Fleet Relief Request ML18183A4502018-07-16016 July 2018 Summary of June 11, 2018, Licensing Meeting with Duke Energy to Discuss a Planned License Amendment Request to Remove Containment Valve Injection Water from Specified Containment Isolation Valves ML17293A0232018-05-0404 May 2018 Summary of 9/20/17, Meeting with Duke Energy to Discuss LAR to Extend Completion Time for an Inoperable Emergency Diesel Generator and Electrical Alignments for Shared Systems for Catawba and McGuire (CAC Nos. MF9667-74; Epids L-2017-LLA-02 ML18117A2212018-04-27027 April 2018 Summary of Public Meeting with Catawba Nuclear Station Concerning Annual Assessment of Units 1 and 2 for Period of January 01, 2017 - December 21, 2017 ML17107A0642017-04-17017 April 2017 Summary of Public Meeting with Catawba, Units 1 and 2 ML17089A2042017-04-0707 April 2017 Summary of January 25, 2017, Pre-Licensing Meeting with Duke Energy to Discuss Proposed License Amendment Request to Create a New Condition for Nuclear Service Water System TS 3.7.8 - Catawba Nuclear Station, Unit Nos. 1 and 2 (CAC MF8944-5 ML16264A1232016-10-12012 October 2016 September 14, 2016, Summary of Category 2 Public Meeting with Duke Energy Carolinas to Discuss Seismic Probabilistic Risk Assessments Associated with Implementation of Japan Lessons-Learned Near-Term Task Force R2.1, Seismic, for Catawba Nu ML16264A1022016-10-0505 October 2016 Summary of Pre-Licensing Meeting with Duke Energy to Discuss Proposed License Amendment Request to Extend Completion Time for an Inoperable Diesel Generator for Catawba Nuclear Station & McGuire Nuclear Stations (Cac. Nos. MF8102-MF8105) ML16116A3712016-05-17017 May 2016 Summary of Meeting with Duke Energy Carolinas, LLC, to Discuss Proposed Changes to the Technical Specification Bases for the Catawba Nuclear Station, Units 1 and 2 ML16081A3352016-03-17017 March 2016 Summary of Meeting with Public Concerning Annual Assessment of Catawba Nuclear Station, Units 1 and 2 ML16035A4802016-02-12012 February 2016 Jsc Meeting Summary Attachment ML15117A5812015-05-0606 May 2015 April 14, 2015, Summary of Public Meeting on Calculation of Risk for NFPA-805 Fire Areas Crediting Control Room Abandonment ML15106A0302015-04-15015 April 2015 Meeting Summary with Public to Discuss the Annual Assessment of Catawba Nuclear Station, Units 1 and 2 ML14126A6792014-05-0606 May 2014 Summary of Public Meeting with Catawba, Units 1 & 2 to Discuss Annual Assessment ML13312A9882013-11-0808 November 2013 Summary of Public Meeting with Duke Energy Carolinas, LLC, to Provide Opportunities to Discuss the Planned Fukushima-Related Modifications ML13225A2932013-08-12012 August 2013 7/23-24/2013, Summary of Meeting 2013 U.S. Nuclear Regulatory Commission (NRC) Initial Exam Writers' Workshop ML13127A0502013-05-20020 May 2013 Summary of April 18, 2013, Meeting with Duke Energy Concerning the National Fire Protection Association (NFPA) 805: Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants ML13127A1742013-05-0303 May 2013 4/29/2013 - Summary of Catawba 2012 EOC Meeting ML12261A2232012-09-17017 September 2012 September 11, 2012 - Summary of Category 1 Public Meeting Held in Atlanta, Ga ML12117A2512012-04-26026 April 2012 Meeting Summary with Catawba Nuclear Station to Discuss the Nrc'S Reactor Oversight Process (ROP) and the Nrc'S Annual Assessment of Plant Safety Performance for the Period of January 1, 2011, to December 31, 2011 ML1112308322011-05-0303 May 2011 End of Cycle Public Meeting Summary ML11097A0272011-04-14014 April 2011 Summary of Meeting with Duke Energy Carolinas, LLC, on Upcoming Submittal of License Amendments Regarding Implementation of National Fire Protection Association Standard 805, (TACs ME5767 & ME5768, Catawba 1 & 2 ME5769 & ME5770 Mcguire 1 & ML1034807072010-12-14014 December 2010 Public Meeting Summary - Duke Quality Assurance Program Discussion Meeting ML1030810242010-11-10010 November 2010 Summary of November 1, 2010, Meeting with Duke to Discuss Responses to Generic Letter (GL) 2004-02 (Tac Nos. MC4673, MC4674, MC4692, and MC4693) ML1023804682010-08-26026 August 2010 08/18/10 Summary of Meeting NRC Initial Exam Writer'S Workshop ML1020100072010-07-21021 July 2010 Summary of Telephone Conference Call Regarding the Fall 2007 Steam Generator (SG) Tube Inspections ML1019000622010-07-14014 July 2010 Summary of Telephone Conference Call with Duke Energy Carolinas, Llc., Regarding 2009 Steam Generator Tube Inspections Catawba, Unit 2 ML1011604522010-04-26026 April 2010 Summary of Public Meeting with Catawba Nuclear Station to Discuss Nrc'S Reactor Oversight Process and the Nrc'S Annual Assessment of Plant Safety Performance for the Period of January 1, 2009 - December 31, 2009 ML0926700202009-10-0707 October 2009 Summary of Conference Call with Duke Regarding Responses to Generic Letter (GL) 2004-02 ML0923803922009-08-26026 August 2009 08/11-12/2009-Summary of Meeting Re 2009 Us NRC Initial Exam Development Workshop ML0906404402009-01-28028 January 2009 Enclosure 6: Case Study 2: Catawba Emergency TS Change - Meeting Summary of the January 27 & 28 Meeting with Nrc/Tstf L-04-004, 11/24/2008 - Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors2008-12-0303 December 2008 11/24/2008 - Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML0833103972008-12-0303 December 2008 Summary of Meeting to Discuss 11/21/2008 and 11/18/2008 Requests for Additional Information GL 2004-04, Potential Impact of Debris Blockage of Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML0820604872008-08-0606 August 2008 Summary of Meeting to Discuss Transition from Duke'S Current Quality Assurance Program to American Society of Mechanical Engineers NQA-1-1994 ML0621305672006-08-0101 August 2006 Summary of 07/19 - 07/20/2006 Meeting - 2006 Initial Exam Development Workshop ML0601800062006-03-28028 March 2006 Meeting Summary, Reload Design and Safety Analysis Methodology ML0535503872005-12-19019 December 2005 Public Meeting Summary - Catawba Service Water Project Update - Catawba Nuclear Station - Docket Nos. 50-413, 50-414 ML0529103762005-10-25025 October 2005 9/19/05, Catawba, Units 1 and 2, Meeting Summary, Nuclear Service Water System 2023-05-02
[Table view] |
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 July 14, 2010 Mr. J. R. Morris Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, SC 29745 SUB..IECT: CATAWBA NUCLEAR STATION, UNIT 2 (CATAWBA 2) -
SUMMARY
OF TELEPHONE CONFERENCE CALL REGARDING THE 2009 STEAM GENERATOR (SG) TUBE INSPECTIONS (TAC NOS. ME0910 AND ME0911)
Dear Mr. Morris:
On March 24, 2009, U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call with representatives of Duke Energy Carolinas, LLC (the licensee), regarding its ongoing SG tube inspection activities at Catawba 2. To facilitate this conference call, the licensee provided supplemental materials regarding the scope and results of its SG tube inspection activities.
Enclosed is a summary of the conference call. The NRC staff did not identify any issues that would warrant immediate follow-up action.
If you have any questions, please contact me at (301) 415-1119 or send an e-mail to Jon.Thompson@nrc.gov.
Sincerely, Jon Thompson, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-414
Enclosure:
Conference Call Summary cc w/encl: Distribution via ListServ
SUMMARY
OF MARCH 24, 2009, CONFERENCE CALL WITH DUKE ENERGY CAROLINAS, LLC, REGARDING THE 2009 STEAM GENERATOR TUBE INSPECTION RESULTS CATAWBA NUCLEAR STATION, UNIT 2 DOCKET NO. 50-414 On March 24, 2009, the U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call with representatives of Duke Energy Carolinas, LLC (the licensee), regarding its ongoing steam generator (SG) tube inspection activities at Catawba Nuclear Station, Unit 2 (Catawba 2). To facilitate this conference call, the licensee provided supplemental material (Agencywide Documents Access and Management System (ADAMS), Accession No. ML091380251) regarding the scope and results of its SG tube inspection activities.
Catawba 2 has four Westinghouse Electric Company Model D5 SGs which were placed in service in 1986. The tubing is made from thermally treated Alloy 600. The SGs feature full depth hydraulically expanded joints in the tubesheet and type 405 stainless steel support plates with quatrefoil holes. Each SG contains 4,570 tubes.
During the March 24, 2009, conference call, the licensee provided additional clarifying information, or information not included in the supplemental material, which is summarized below:
- In the General Information Section:
o The licensee indicated that they were using the rotating ghent (RG34) probe to inspect selected locations.
o The licensee indicated that they inspected the U-bend region of 35% of the tubes in rows 1 through 5 with the intent that the U-bend region of all tubes would be inspected after three 35% samples.
o The 100% inspection of the cold-leg tubesheet region in SGs A and D was based on the inspection results from the last outage. During the last outage, indications were found in the cold-leg tubesheet region of SGs A and D; none were found in SGs Band C.
o Row 10 is the first row containing U-bends which were not stress relieved.
o A 50% sample of all dents was also performed during the last outage.
o A +Point probe was used to inspect all tube-end indications.
Enclosure
-2 o The indications at the top of tubesheet and at the tube supports were inspected with a +Point probe, a magnetically biased +Point probe, and a RG34 probe.
- In the Current Status Section:
o The remaining inspections in SG A were mainly on the cold-leg side of the SG.
o The remaining inspections in SG D were mainly in the cold-leg with some confirmatory examinations on the hot-leg, e.g., +Point probe inspections.
In the Inspection Results Section:
o The licensee stated that SG B runs hotter than the other 3 SGs, and this could account for the discrepancy in the number of tubes with indications.
o It was clarified that in SG D hot leg there were two tubes with crack-like indications at the tube support plate TSP locations. These two tubes had a total of 6 crack-like indications.
o 166 indications were identified below the Interim Alternate Repair Criterion (IARC) depth in SG B. This represents 24 more than was detected last outage.
o There were no indications detected at the top of the tubesheet in SG B, although 8 had been detected during the last outage. There were 14 possible indications in SG B as a result of the array probe inspections, but all were dispositioned as not having degradation based on inspection with other probes, e.g., +Point.
During the prior outage, all indications at the top of the tubesheet in SG B were confirmed as flaws with a +Point probe and one of these tubes was also confirmed to contain a flaw with an RG34 probe.
o The indication at the tube support plate elevation in SG B was located at the 2nd tube support plate elevation, Le., the first tube support above the flow distribution baffle, and is in a tube with an eddy current offset (Information Notice 2002-21; ADAMS Accession No. ML021770094). The flaw was small, axially oriented, and associated with one of the quatrefoil leads. The indication measured 0.14 volts with a +Point probe and was approximately 0.4 inches long. The flaw was confirmed to be present with several different inspection probes.
o All of the flaws at the tube support plate elevations are in tubes in row 10 or higher, Le., the non-stress relieved tubes.
o All of the top of tubesheet indications reported in the table were detected with an array coil but had not yet been inspected with a +Point probe.
o In terms of data quality, the licensee indicated that the data from the top of tubesheet region is somewhat noisy, but the data at the tube support plate elevations is relatively clean.
-3
o The licensee clarified that at the time of the call, there was one tube with a bulge that was a candidate for plugging in SG C. The bulge was 0.75 inches from the top of the tubesheet.
In the NRC Generic Questions:
o The licensee stated that all of the tube end crack-like indications were in the bottom 1 inch of the tube.
o The licensee stated that the amount of objects found in the pre-heater section of the SGs has been decreasing over time. The usual items found are small, e.g.,
wires, bristles, etc. In this inspection, about 20 small items (less than 0.5 inches long) per SG were found and approximately 50% were removed.
o No indications of wear had depths greater than 40% through-wall. The growth rate of the wear indications is low.
o The licensee indicated that two tubes in SG C were identified with indications of wear attributed to loose parts; these indications were not reflected on the document provided by the licensee. These indications were in the preheater region of the SG, i.e., on the cold-leg. There is one tube that has a 20%
through-wall indication. This indication has not changed since the prior inspection. The other indication is new, i.e., not present in the prior inspection, and measures 14% through-wall. There is no eddy current or visual evidence of a part at either of these two locations.
o No sludge lancing was performed during this outage. Sludge lancing is typically performed every other outage. There were no visual inspections at the top of the tubesheet and there was no eddy current evidence of any possible loose parts at the top of the tubesheet.
o A visual inspection of the upper tube support plate was performed in one SG.
The quality of the visual inspection was better this outage than in the last outage due to an effort prior to the outage to improve the inspection capability. There was some evidence of flakes of deposits and there was some minor evidence of deposits in the quatrefoil openings, e.g., rounded edges, but the holes were generally clean and open, i.e., only minor amount of deposits.
- At the end of the call, the licensee indicated that they would be reviewing the data from the tube end indications to confirm that they are not growing excessively.
The NRC staff did not identify any issues that required follow-up action at this time; however, the staff asked to be notified in the event that any unusual conditions were detected during the remainder of the outage.
July 14, 2010 Mr. J. R. Morris Site Vice President Catawba Nuclear Station Duke Energy Carolinas, LLC 4800 Concord Road York, SC 29745
SUBJECT:
CATAWBA NUCLEAR STATION, UNIT 2 (CATAWBA 2) -
SUMMARY
OF TELEPHONE CONFERENCE CALL REGARDING THE 2009 STEAM GENERATOR (SG) TUBE INSPECTIONS (TAC NOS. ME0910 AND ME0911)
Dear Mr. Morris:
On March 24,2009, U.S. Nuclear Regulatory Commission (NRC) staff participated in a conference call with representatives of Duke Energy Carolinas, LLC (the licensee), regarding its ongoing SG tube inspection activities at Catawba 2. To facilitate this conference call, the licensee provided supplemental materials regarding the scope and results of its SG tube inspection activities.
Enclosed is a summary of the conference call. The NRC staff did not identify any issues that would warrant immediate follow-up action.
If you have any questions, please contact me at (301) 415-1119 or send an e-mail to Jon.Thompson@nrc.gov.
Sincerely, IRA!
Jon Thompson, Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-414
Enclosure:
Conference Call Summary cc w/encl: Distribution via ListServ DISTRIBUTION:
PUBLIC RidsNrrDoriDpr Resource RidsRgn2MailCenler Resource LPL2-1 RlF RidsNrrDorlLpl2-1 Resource KKarwoski, NRR/DCI/CSGB RidsAcrsAcnw_MailCTR Resource RidsOgcRp Resource EWong, NRRIDCI/CSGB RidsNrrDciCsgb Resource RidsNrrPMCalawba Resource RidsNrrLAMOBrien Resource(hard copy)
ADAMS Accession No. ML101900062 *no significant changes from input sent 5/18/0 9 ML091380305 OFFICE DORULPL2-1/PM DORULPL2-1/LA DCI/CSGB/BC* DORLlLPL2-1/BC DORULPL2-1/PM NAME JThompson MO'Brien MGavrilas* GKulesa JThompson DATE 07112110 07112110 05/18/09 07/14/10 07/14/10 OFFICIAL RECORD COpy