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Category:Inspection Report Correspondence
MONTHYEARML24107A9322024-04-15015 April 2024 Document Request for Vogtle Electric Generating Plant Units 1 & 2 - Radiation Protection Inspection Report 2024-02 ML21312A4122021-11-17017 November 2021 Final Significance Determination of a Preliminary White Finding, a Preliminary Greater than Green Finding, Notice of Violation, and Assessment Follow-Up Letter; NRC Special Inspection Report 05200025/2021011 ML18299A3262018-10-26026 October 2018 Southern Nuclear Operating Company Vogtle Electric Generating Plant, Units 3 & 4 - U.S. Nuclear Regulatory Commission Security Integrated Inspection Report 05200025/2018412 and 05200026/2018412 (OUO Removed) ML16008A8982016-01-0808 January 2016 IR 05000424/2015501 and 05000425/2015501, December 31, 2015, Vogtle Electric Generating Plant - NRC Emergency Preparedness Annual Report ML13094A2132013-04-0303 April 2013 IR 05000424-13-007 and 05000425-13-007, on 07/15-19, 07/29 -008/02, 08/12-16/2013, Notification of Vogtle Electric Generating Plant - Component Design Bases Inspection ML1016001712010-06-0202 June 2010 Notification of Triennial Fire Protection Baseline Inspection (NRC) ML0921701072009-08-0505 August 2009 Request for Documents for Radiation Protection Inspection ML0904301432009-02-12012 February 2009 IR 05000424-08-005 & 05000425 on 01/20/09 for Vogtle Electric Generating Plant ML0806402102008-04-0101 April 2008 Review of the 2006 Refueling Outage Steam Generator Tube Inservice Inspection Report IR 05000424/20072022008-02-0606 February 2008 05000424-07-202, 05000425-07-202 on 09/14/2007 for Vogtle, Units 1 and 2 on Security Baseline Inspection ML0720505722007-07-19019 July 2007 IR 05000424-07-006, 05000425-07-006, on 04/23/2007 - 04/27/2007, 05/07/2007 - 05/11/2007, 05/21/2007 - 05/25/2007, Vogtle, Units 1 and 2; Component Design Bases Inspection IR 05000424/20074022007-07-13013 July 2007 IR 05000424-07-402, and IR 05000425-07-402, on 06/15/2007, Vogtle Electric Generating Plant, NRC Physical Security Baseline Inspection Report ML0707800982007-03-16016 March 2007 IR 05000424-07-007, 05000425-07-007, on 01/29/2007 - 02/16/2007, Vogtle Electric Generating Plant, Units 1 and 2, Identification and Resolution of Problems ML0617203682006-06-20020 June 2006 IR 05000424-06-009, IR 05000425-06-009 on 03/20-24/2006; Vogtle Electric Generating Plant, Units 1 and 2; Exercise Evaluation 2024-04-15
[Table view] Category:Letter
MONTHYEARIR 05000424/20244012024-08-15015 August 2024 4 - Security Baseline Inspection Report 05000424-2024401, 05000425-2024401, 05200025-2024402, and 05200026-2024403 - Cover Letter ML24218A1842024-08-0707 August 2024 Examination Report and Cover Letter ML24212A1442024-08-0101 August 2024 Integrated Inspection Report 05200025/2024002 and 05200026/2024002 IR 05000424/20240022024-07-29029 July 2024 Integrated Inspection Report 05000424/2024002 and 05000425/2024002 IR 05000424/20244042024-07-26026 July 2024 Material Control and Accounting Program Inspection Report 05000424/2024404 and 05000425/2024404 (Cover Letter) NL-24-0126, – Units 3 and 4, License Amendment Request: Changes to Technical Specification 3.7.6, Main Control Room Emergency Habitability System (Ves) Action a and SR 3.7.6.62024-07-25025 July 2024 – Units 3 and 4, License Amendment Request: Changes to Technical Specification 3.7.6, Main Control Room Emergency Habitability System (Ves) Action a and SR 3.7.6.6 NL-24-0282, License Amendment Request and Exemption Request: Remove Tier 1 and Tier 2* Requirements2024-07-25025 July 2024 License Amendment Request and Exemption Request: Remove Tier 1 and Tier 2* Requirements ML24204A0722024-07-23023 July 2024 Issuance of Amendment No. 225, Regarding LAR to Revise TS 3.7.9 for a one-time Change to Support Nuclear Service Cooling Water Transfer Pump Repairs - Emergency Circumstances NL-24-0286, Emergency Request to Revise Technical Specification 3.7.9 for a One-Time Change to Support a Unit 1 Nuclear Service Cooling Water Transfer Pump Repair2024-07-20020 July 2024 Emergency Request to Revise Technical Specification 3.7.9 for a One-Time Change to Support a Unit 1 Nuclear Service Cooling Water Transfer Pump Repair ML24191A4562024-07-19019 July 2024 Request for Relief and Alternative Requirements for Squib (Explosively Actuated) Valves First Test Interval NL-24-0261, 10 CFR 50.46 ECCS Evaluation Model Annual Report for 20232024-07-19019 July 2024 10 CFR 50.46 ECCS Evaluation Model Annual Report for 2023 ML24194A0342024-07-12012 July 2024 Review of the Refueling Outage 1R24 Steam Generator Tube Inspection Report ML24191A3792024-07-10010 July 2024 – Initial Test Program and Operational Programs Inspection Report 05200026/2024011 NL-24-0227, Proposed Inservice Inspection Alternative GEN-ISI-AL T-2024-03 for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1)2024-07-0303 July 2024 Proposed Inservice Inspection Alternative GEN-ISI-AL T-2024-03 for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1) NL-24-0234, Application to Revise Technical Specifications to Adopt TSTF-589, Eliminate Automatic Diesel Generator Start During Shutdown2024-06-28028 June 2024 Application to Revise Technical Specifications to Adopt TSTF-589, Eliminate Automatic Diesel Generator Start During Shutdown NL-24-0143, Proposed Alternative to Use ASME Code Case N-752, Risk-Informed Categorization and Treatment for Repair/ Replacement Activities in2024-06-27027 June 2024 Proposed Alternative to Use ASME Code Case N-752, Risk-Informed Categorization and Treatment for Repair/ Replacement Activities in NL-24-0087, License Amendment Request: Changes to Technical Specification 3.7.6, Main Control Room Emergency Habitability System (Ves) Air Storage Tanks2024-06-21021 June 2024 License Amendment Request: Changes to Technical Specification 3.7.6, Main Control Room Emergency Habitability System (Ves) Air Storage Tanks NL-24-0201, Proposed Inservice Inspection Alternative GEN-ISI-ALT-2024-002 for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1)2024-06-18018 June 2024 Proposed Inservice Inspection Alternative GEN-ISI-ALT-2024-002 for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1) NL-24-0243, Registration of Spent Fuel Cask Use2024-06-18018 June 2024 Registration of Spent Fuel Cask Use ML24163A0632024-06-12012 June 2024 2024 Licensed Operator Re-qualification Inspection Notification Letter Vogtle, Units 3 & 4 ML24155A1772024-06-0505 June 2024 Regulatory Audit in Support of Review of the LAR to Revise Emergency Diesel Generator Frequency and Voltage Ranges for Technical Specification 3.8.1, Surveillance Requirements NL-24-0202, SNC Response to Regulatory Issue Summary 2024-01: Preparation and Scheduling of Operator Licensing Examinations2024-05-24024 May 2024 SNC Response to Regulatory Issue Summary 2024-01: Preparation and Scheduling of Operator Licensing Examinations ML24141A0482024-05-17017 May 2024 EN 56958_1 Ametek Solidstate Controls, Inc ML24130A2412024-05-13013 May 2024 Integrated Inspection Report 05200025/2024001 and 05200026/2024001 ML24120A1812024-05-13013 May 2024 Request for Withholding Information from Public Disclosure Responses to NRC Request for Additional Information for Refueling Outage IR24 Steam Generator Tube Inspection Report – Enclosure 2 NL-24-0191, Annual Radiological Environmental Operating Reports for 20232024-05-10010 May 2024 Annual Radiological Environmental Operating Reports for 2023 ML24127A2372024-05-0909 May 2024 Initial Test Program and Operational Programs Inspection Report 05200026/2024010 NL-24-0194, Revised Request for Relief and Alternative Requirements for Squib Valves First Test Interval (V34-IST-ALT-03-R1)2024-05-0707 May 2024 Revised Request for Relief and Alternative Requirements for Squib Valves First Test Interval (V34-IST-ALT-03-R1) IR 05000424/20244032024-05-0101 May 2024 Cyber Security Inspection Report 05000424/2024403 and 05000425/2024403 Public ML24120A2832024-04-30030 April 2024 Project Manager Reassignment NL-24-0165, Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 20232024-04-25025 April 2024 Annual Non-Radiological Environmental Operating Reports and Annual Radioactive Effluent Release Reports for 2023 NL-24-0170, Responses to Second Round NRC Request for Additional Information for Refueling Outage 1 R24 Steam Generator Tube Inspection Report2024-04-25025 April 2024 Responses to Second Round NRC Request for Additional Information for Refueling Outage 1 R24 Steam Generator Tube Inspection Report NL-24-0154, Preservice Inspection Progam Owners Activity Report2024-04-16016 April 2024 Preservice Inspection Progam Owners Activity Report ML24032A0252024-02-0505 February 2024 NRC Initial Test Program and Operational Programs Integrated Inspection Report 05200026-2023009 ML24010A0712024-01-31031 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports and Recordkeeping and Suspicious Activity Reporting) ML24031A6102024-01-31031 January 2024 Cyber Security Inspection Report 05200026/2024401 - Public ML24029A0592024-01-30030 January 2024 Request for Withholding Information from Public Disclosure Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report Enclosure 2, GAE-NRCD-RF-LR-000002 P-Attachment, Rev. 0 ML24016A1132024-01-30030 January 2024 Correction of Unit 1 Amendment Nos. 96 and 190 and Unit 2 Amendment Nos. 74 and 173 Adoption of Standard Technical Specifications Westinghouse Plants NL-24-0031, Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 2R232024-01-29029 January 2024 Inservice Inspection Program Owner'S Activity Report (OAR-1) for Outage 2R23 NL-24-0020, Plan, Unit 1 Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report2024-01-22022 January 2024 Plan, Unit 1 Responses to NRC Request for Additional Information for Refueling Outage 1R24 Steam Generator Tube Inspection Report ML23347A2092024-01-17017 January 2024 Voluntary Requests for Data, Information, And/Or Observation ML23279A0042024-01-17017 January 2024 Amendment No. 194 to Remove Combined License Appendix C NL-23-0926, Correction of Technical Specification Typographical Error2024-01-12012 January 2024 Correction of Technical Specification Typographical Error ML23341A2042024-01-12012 January 2024 Request for Additional Information Exemption Requests for Physical Barriers (EPID L-2023-LLE-0018 & L-2023-LLE-0021) ML23345A1312024-01-0303 January 2024 Withholding Letter - SNC Fleet - Physical Barriers Exemption (L-2023-LLE-0018 and L-2023-LLE-0021) ML23317A2072023-12-22022 December 2023 Issuance of Amendments 223 and 206 Regarding Revision to Technical Specifications to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the COLR Consistent with WCAP-1448 ML23353A1702023-12-19019 December 2023 LAR-22-002, TS 3.8.3 Inverters Operating Completion Time Extension Letter ML23335A1222023-12-19019 December 2023 Safety Evaluation Regarding Implementation of Mitigating Strategies Related to Order EA-12-049 (EPID L-2023-LRQ-0002) - Letter ML23310A2922023-12-0707 December 2023 Issuance of Amendment for Exception to Regulatory Guide 1.163, LAR 23 007 2024-08-07
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Text
April 1, 2008
Mr. Tom E. Tynan Vice President - Vogtle Vogtle Electric Generating Plant 7821 River Road Waynesboro, GA 30830
SUBJECT:
VOGTLE ELECTRIC GENERATING PLANT, UNIT 1, REVIEW OF THE 2006 REFUELING OUTAGE STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT (TAC NO. MD5394)
Dear Mr. Tynan:
By letter dated April 18, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML072480031), Southern Nuclear Operating Company, Inc (the licensee) submitted information summarizing the results of the 2006 steam generator (SG) tube inspections at Vogtle Electric Generating Plant, Unit 1 (Vogtle 1). These inspections were performed during the thirteenth refueling outage (1R13). The licensee provided additional information in a letter dated January 31, 2008 (ADAMS Accession Number ML080320298). In addition, the Nuclear Regulatory Commission (NRC) staff summarized a conference call about the 2006 SG tube inspections at Vogtle 1 in a letter dated December 19, 2006 (ADAMS Accession Number ML063390165).
The NRC staff has completed its review of these reports and concludes that the licensee provided the information required by their technical specifications and that no additional follow-up is required at this time. The NRC staff's review of the report is enclosed.
Sincerely,
/RA/ Siva P. Lingam, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
Docket No. 50-424
Enclosure:
Inspection Summary Report
cc w/encl: See next page
ML080640210 *transmitted by memo dated OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/DCI/CSGB/BC NRR/LPL2-1/BC NAME SLingam MO
=Brien AHiser MWong DATE 3/4/08 3/10/08 2/28/08* 4/1/08 REVIEW OF THE 2006 REFUELING OUTAGE STEAM GENERATOR TUBE INSPECTION REPORT
SOUTHERN NUCLEAR OPERATING COMPANY, INC.
VOGTLE ELECTRIC GENERATING PLANT, UNIT 1
DOCKET NO. 50-424 By letter dated April 18, 2007 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML072480031), Southern Nuclear Operating Company, Inc.
(the licensee) submitted information summarizing the results of the 2006 steam generator (SG) tube inspections at Vogtle Electric Generating Plant, Unit 1 (Vogtle 1). These inspections were performed during the thirteenth refuelling outage (1R13). The licensee provided additional information in a letter dated January 31, 2008 (ADAMS Accession Number ML080320298). In addition, the Nuclear Regulatory Commission (NRC) staff summarized a conference call about the 2006 SG tube inspections at Vogtle 1 in a letter dated December 19, 2006 (ADAMS Accession Number ML063390165).
Vogtle 1 has four Westinghouse Model F SGs, each of which contains 5,626 U-bend thermally treated Alloy 600 tubes. Each tube has a nominal outside diameter of 0.688 inches and a nominal wall thickness of 0.040 inches. During SG fabrication, the tubes were hydraulically expanded, at both ends, over the full depth of the tubesheet. Type 405 stainless steel support plates, which have broached quatrefoil holes, support the vertical section of the tubes, and anti-vibration bars support the U-bend section of the tubes.
At the time of this inspection, the SGs had accumulated approximately 205 Effective Full Power Months (EFPM) of operation. At the time of the inspection, the SG had experienced approximately 71 EFPM of operation in the 90 EFPM sequential period.
The licensee provided the scope, extent, methods, and results of their SG tube inspections in the documents referenced above.
After review of the information provided by the licensee, the NRC staff has the following comments/observations:
A full-bundle chemical cleaning was performed on the Vogtle 1 SGs, to reduce the potential for the onset of tube corrosion and to eliminate the potential that severe secondary fouling would cause significant power reductions in the future. The chemical cleaning, along with the follow-up mechanical cleaning techniques, removed 6819 pounds of deposits. Based on the sludge removed and secondary visual inspection results, the chemical cleaning was considered successful by the licensee. In-bundle inspections were performed in SG1 above the seventh tube support plate, in a couple of cold leg and hot leg columns. The columns selected were found to
Enclosure be free of foreign objects and sludge. The quatrefoil lobes and lands were clean and open. No anomalous conditions were observed during these inspections.
Ultrasonic Energy Cleaning (UEC) was performed in all four Vogtle 1 SGs in both the 1R11 and 1R12 outages, and in SG1 in the 1R10 outage. The UEC was performed to remove scale deposits and scale collars from the top of the tubesheet. During the 1R13 outage, bobbin inspections identified several tubes with differential freespan signals. Upon further examination with a rotating probe, the bobbin indications were characterized as areas of shallow (less than or equal to 10-percent through-wall thickness) flaws. A previous bobbin inspection of these tubes during the fall 2003 outage (1R11) after the UEC was performed resulted in no shallow wall loss being detected. The licensee speculates that the full-bundle chemical cleaning may have improved the detectability of the indications.
In SG4, the outside-diameter stress-corrosion crack at row 5 column 68 initiated slightly above the bottom of the expansion transition and continued downward into the tubesheet, with almost all of the 0.46-inch long indication being below the bottom of the expansion transition.
Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by their technical specifications. 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.
Vogtle Electric Generating Plant, Units 1 & 2
cc:
Mr. Tom E. Tynan Vice President - Vogtle Vogtle Electric Generating Plant 7821 River Road Waynesboro, GA 30830
Mr. N. J. Stringfellow Manager, Licensing Southern Nuclear Operating Company, Inc.
P.O. Box 1295 Birmingham, AL 35201-1295 Mr. Jeffrey T. Gasser Executive Vice President Southern Nuclear Operating Company, Inc.
P.O. Box 1295 Birmingham, AL 35201-1295
Mr. Steven M. Jackson Senior Engineer - Power Supply Municipal Electric Authority of Georgia 1470 Riveredge Parkway, NW Atlanta, GA 30328-4684
Mr. Reece McAlister Executive Secretary Georgia Public Service Commission 244 Washington St., SW Atlanta, GA 30334
Mr. Harold Reheis, Director Department of Natural Resources 205 Butler Street, SE, Suite 1252 Atlanta, GA 30334
Attorney General Law Department 132 Judicial Building Atlanta, GA 30334
Mr. Laurence Bergen Oglethorpe Power Corporation 2100 East Exchange Place P.O. Box 1349 Tucker, GA 30085-1349
Arthur H. Domby, Esquire Troutman Sanders Nations Bank Plaza 600 Peachtree Street, NE Suite 5200 Atlanta, GA 30308-2216
Resident Inspector Vogtle Plant 8805 River Road Waynesboro, GA 30830
Office of the County Commissioner Burke County Commission Waynesboro, GA 30830
Mr. Bob Masse Resident Manager Oglethorpe Power Corporation Vogtle Electric Generating Plant 7821 River Road Waynesboro, GA 30830