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Category:Inspection Report Correspondence
MONTHYEARML21312A4122021-11-17017 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 2021-11-17
[Table view] Category:Letter
MONTHYEARML24032A0252024-02-0505 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 IR 05000424/20244032024-01-26026 January 2024 Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000424/2024403; 05000425/2024403 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 ML23335A1222023-12-19019 December 2023 Safety Evaluation Regarding Implementation of Mitigating Strategies Related to Order EA-12-049 (EPID L-2023-LRQ-0002) - Letter ML23353A1702023-12-19019 December 2023 LAR-22-002, TS 3.8.3 Inverters Operating Completion Time Extension Letter ML23310A2922023-12-0707 December 2023 Issuance of Amendment for Exception to Regulatory Guide 1.163, LAR 23 007 ML23339A1812023-12-0707 December 2023 Correction Letter Regarding License Amendment Request: More Restrictive Action for Technical Specification 3.1.9 ML23338A2182023-12-0606 December 2023 Project Manager Reassignment NL-23-0878, Request for Exemption from Security Event Notification Implementation2023-11-29029 November 2023 Request for Exemption from Security Event Notification Implementation ML23289A1632023-11-28028 November 2023 Letter and Amendment 195 and 192 LAR-23-006R1 TS 3.1.9 More Restrictive Action NL-23-0827, Response to Requests for Additional Information for a License Amendment Request and a Proposed Alternative Related to TS 3.4.142023-11-17017 November 2023 Response to Requests for Additional Information for a License Amendment Request and a Proposed Alternative Related to TS 3.4.14 ML23318A4582023-11-14014 November 2023 Integrated Inspection Report 05200025/2023003 ML23312A3502023-11-14014 November 2023 Integrated Inspection Report 05200026/2023003 ML23306A3552023-11-0808 November 2023 NRC Initial Test Program and Operational Programs Integrated Inspection Report 052000/262023008 ML23268A0572023-11-0707 November 2023 Issuance of Amendments 194 & 191 Request for License Amendment Relocation of Technical Specification 3.7.9, Spent Fuel Pool Makeup Water Sources (LAR-23-003) IR 05000424/20234022023-11-0606 November 2023 Security Baseline Inspection Report 05000424/2023402 and 05000425/2023402 IR 05000424/20230032023-10-27027 October 2023 Integrated Inspection Report 05000424/2023003 and 05000425/2023003 ML23291A1512023-10-18018 October 2023 Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 0520026/2024401 ML23263A9852023-10-12012 October 2023 Issuance of Amendments Nos. 221 and 204, Regarding Technical Specification 5.5.11.C, Acceptance Criteria for Charcoal Filter Testing ML23283A0472023-10-0808 October 2023 Neop Letter Dated October 8, 2023 - Vogtle 3 & 4 - TS 3.7.6 License Amendment Request NL-23-0750, Response to Second Request for Additional Information Regarding License Amendment Request: Technical Specification Revision to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the Colr2023-10-0404 October 2023 Response to Second Request for Additional Information Regarding License Amendment Request: Technical Specification Revision to Adopt TSTF-339-A, Relocate Technical Specification Parameters to the Colr NL-23-0745, Refueling Outage 1R24 Steam Generator Tube Inspection Report2023-09-22022 September 2023 Refueling Outage 1R24 Steam Generator Tube Inspection Report ML23254A2032023-09-13013 September 2023 Initial Test Program and Operational Programs Inspection Report 05200025/2023013 ML23241B0212023-09-12012 September 2023 Review of Quality Assurance Topical Report ML23234A2352023-09-0808 September 2023 Request for Withholding Information from Public Disclosure Notification of Full Compliance of Required Action for NRC Order EA-12-049 Mitigation Strategies for Beyond-Design-Basis External Events IR 05000424/20230912023-09-0505 September 2023 Plan Units 1 and 2 - NRC Investigation Report 2-2022-006 and Notice of Violation - NRC Inspection Report 05000424/2023091 and 05000425/2023091 ML23234A3002023-09-0101 September 2023 NRC Integrated Inspection Report 05200026/2023003 ML23243A0092023-08-31031 August 2023 Updated Inspection Plan for Vogtle Electric Generating Plant, Units 3 & 4 (Report 05200025 2023005 & 05200026 2023005) NL-23-0695, Response to Round 2 Request for Additional Information Regarding License Amendment Request for Technical Specification 3.8.3, Inverters Operating, Completion Time Extension (LAR-22-002S2)2023-08-31031 August 2023 Response to Round 2 Request for Additional Information Regarding License Amendment Request for Technical Specification 3.8.3, Inverters Operating, Completion Time Extension (LAR-22-002S2) ML23243B0252023-08-30030 August 2023 Exam Corporate Notification Letter (210 Day) IR 05000424/20230052023-08-29029 August 2023 Updated Inspection Plan for Vogtle Electric Generating Plant, Units 1 & 2 - Report 05000424/2023005 and 05000425/2023005 NL-23-0666, License Amendment Request: Remove Combined License Appendix C (LAR 23-008)2023-08-28028 August 2023 License Amendment Request: Remove Combined License Appendix C (LAR 23-008) 2024-02-05
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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 staffs 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 Arthur H. Domby, Esquire Vice President - Vogtle Troutman Sanders Vogtle Electric Generating Plant Nations Bank Plaza 7821 River Road 600 Peachtree Street, NE Waynesboro, GA 30830 Suite 5200 Atlanta, GA 30308-2216 Mr. N. J. Stringfellow Manager, Licensing Resident Inspector Southern Nuclear Operating Company, Inc. Vogtle Plant P.O. Box 1295 8805 River Road Birmingham, AL 35201-1295 Waynesboro, GA 30830 Mr. Jeffrey T. Gasser Office of the County Commissioner Executive Vice President Burke County Commission Southern Nuclear Operating Company, Inc. Waynesboro, GA 30830 P.O. Box 1295 Birmingham, AL 35201-1295 Mr. Bob Masse Resident Manager Mr. Steven M. Jackson Oglethorpe Power Corporation Senior Engineer - Power Supply Vogtle Electric Generating Plant Municipal Electric Authority of Georgia 7821 River Road 1470 Riveredge Parkway, NW Waynesboro, GA 30830 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