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| | docket = 05000499 | | | docket = 05000499 |
| | license number = NPF-080 | | | license number = NPF-080 |
| | contact person = Regner L 415-1906 | | | contact person = Regner L M 415-1906 |
| | case reference number = EPID L-2018-LRO-0041 | | | case reference number = EPID L-2018-LRO-0041 |
| | document type = Letter | | | document type = Letter |
Revision as of 18:52, 13 June 2019
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Category:Letter
MONTHYEARIR 05000498/20240022024-08-0909 August 2024 Integrated Inspection Report 05000498/2024002 and 05000499/2024002 IR 05000498/20240102024-08-0808 August 2024 Biennial Problem Identification and Resolution Inspection Report 05000498/2024010 and 05000499/2024010 NOC-AE-240040, Application for Order Consenting to Direct Transfer of Licenses2024-07-31031 July 2024 Application for Order Consenting to Direct Transfer of Licenses ML24218A1462024-07-26026 July 2024 2. EPA Comments on South Texas Project Exemption Ea/Fonsi ML24207A1782024-07-25025 July 2024 Licensed Operator Positive Fitness-For-Duty Test IR 05000498/20244042024-06-0303 June 2024 Cyber Security Inspection Report 05000498/2024404 (Cover Letter) ML24141A0482024-05-17017 May 2024 EN 56958_1 Ametek Solidstate Controls, Inc ML24136A2842024-05-15015 May 2024 Independent Spent Fuel Storage Installation Supplement to Request for Exemption from Various Part 72 Regulations Resulting from Fuel Basket Design Control Compliance ML24136A2872024-05-15015 May 2024 Submittal of 2024 Nrc/Fema Evaluated Exercise Scenario Manual NOC-AE-240040, Operator Licensinq Examination Schedule Revision 32024-05-15015 May 2024 Operator Licensinq Examination Schedule Revision 3 ML24128A1572024-05-0707 May 2024 Independent Spent Fuel Storage Installation Request for Exemption from Various Part 72 Regulations Resulting from Fuel Basket Design Control Compliance IR 05000498/20240012024-05-0606 May 2024 Integrated Inspection Report 05000498/2024001 & 05000499/2024001 ML24116A3032024-04-25025 April 2024 Operations Quality Assurance Plan Condition Adverse to Quality Definition Change Resulting in a Reduction in Commitment ML24116A2282024-04-25025 April 2024 Annual Environmental Operating Report ML24117A1602024-04-24024 April 2024 2023 Radioactive Effluent Release Report ML24102A2452024-04-23023 April 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0046 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) ML24113A3122024-04-22022 April 2024 Cycle 24 Core Operating Limits Report NOC-AE-240040, Relief Request Number RR-ENG-4-07 – Request for an Alternative to ASME Code Case N-729-6 for Reactor Vessel Head Penetration 752024-04-0606 April 2024 Relief Request Number RR-ENG-4-07 – Request for an Alternative to ASME Code Case N-729-6 for Reactor Vessel Head Penetration 75 NOC-AE-240040, Financial Assurance for Decommissioning - 2024 Update2024-03-28028 March 2024 Financial Assurance for Decommissioning - 2024 Update ML24081A3972024-03-21021 March 2024 Response to Request for Additional Information for Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML24080A2902024-03-19019 March 2024 Nuclear Liability Certificates of Insurance ML24079A1312024-03-0505 March 2024 Nuclear Insurance Protection ML24060A1742024-02-28028 February 2024 Submittal of Annual Fitness for Duty Performance Report for 2023 IR 05000498/20230062024-02-28028 February 2024 Annual Assessment Letter for South Texas Project Electric Generating Station, Units 1 and 2 (Report 05000498/2023006 and 05000499/2023006) IR 05000498/20240132024-02-27027 February 2024 Design Basis Assurance Inspection (Programs) Commercial Grade Dedication IR 05000498/2024013 and 05000499/2024013 ML24050A0082024-02-19019 February 2024 Evidence of Financial Protection ML24045A0922024-02-16016 February 2024 Response to STP FOF Move Letter (2024) NOC-AE-240040, Unit L & 2, Supplement to Modify the Implementation Date for License Amendment Request to Revise Alternate Source Term Dose Calculation2024-02-0808 February 2024 Unit L & 2, Supplement to Modify the Implementation Date for License Amendment Request to Revise Alternate Source Term Dose Calculation ML24039A1112024-02-0808 February 2024 Operator Licensing Examination Schedule Revision 2 ML24038A3342024-02-0707 February 2024 Change to South Texas Project Electric Generating Station (Stepgs) Emergency Plan ML24033A3002024-02-0707 February 2024 Summary of Regulatory Audit Regarding a Proposed Alternative to ASME Code, Section XI Requirements for Containment Building Inspections ML24029A2752024-01-29029 January 2024 Request to Reschedule Evaluated Force-on-Force Drill IR 05000498/20230042024-01-29029 January 2024 Integrated Inspection Report 05000498/2023004 and 05000499/2023004 ML24024A1162024-01-24024 January 2024 STP Unit 2 Request for Information IR 05000498/20230032023-12-28028 December 2023 Acknowledgment of Reply to a Notice of Violation (NRC Inspection Report 05000498/2023003 and 05000499/2023003) ML23360A1692023-12-26026 December 2023 FEMA, Submittal of Radiological Emergency Preparedness Final Report for the South Texas Project Medical Services Drill Evaluated on August 31, 2023 NOC-AE-230040, Supplement to Proposed Alternate Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (Relief Request RR-ENG-4-06)2023-12-14014 December 2023 Supplement to Proposed Alternate Frequency to Containment Unbonded Post-Tensioning System Inservice Inspection (Relief Request RR-ENG-4-06) NOC-AE-230039, Docket Nos. Stn 50-498, Stn 50-499 - Reply to a Notice of Violation, NRC Inspection Report 05000498/2023003 and 05000499/20230032023-12-12012 December 2023 Docket Nos. Stn 50-498, Stn 50-499 - Reply to a Notice of Violation, NRC Inspection Report 05000498/2023003 and 05000499/2023003 ML23339A1902023-12-0505 December 2023 Update Foreign Ownership, Control, or Influence (FOCI) ML23326A2592023-12-0505 December 2023 Review of the Fall 2022 Steam Generator Tube Inspection Report IR 05000498/20234012023-12-0404 December 2023 Security Baseline Inspection Report 05000498/2023401 and 05000499/2023401 ML23324A0102023-11-16016 November 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23310A2282023-11-13013 November 2023 Integrated Inspection Report 05000498/2023003 and 05000499/2023003, and Notice of Violation ML23311A2082023-11-0909 November 2023 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch IV ML23298A0002023-11-0101 November 2023 the Associated Independent Spent Fuel Storage Installation - Issuance of Amendment Nos. 226 and 211 Related to Order Approving Indirect Transfer of Licenses and Conforming License Amendments ML23279A0342023-10-30030 October 2023 Associated Independent Spent Fuel Storage Installation - Order Approving Indirect Transfer of Licenses and Draft Conforming License Amendments (EPID L-2023-LLM-0004) (Letter) ML23303A0782023-10-30030 October 2023 Submittal of Supplemental Information in Response to Order Consenting to License Transfers and Approval of Draft Conforming License Amendments IR 05000498/20234032023-10-26026 October 2023 Material Control and Accounting Program Inspection Report 05000498/2023403 and 05000499/2023403 (Cover Letter) ML23317A1262023-10-12012 October 2023 South. Texas Project Physical Security Plan, Training and Qualification Plan, Safeguards Contingency Plan, and Independent Spent Fuel Storage Installation Security Program Revision 26 ML23279A1382023-10-0505 October 2023 Responses to Requests for Additional Information Related to Application for Order Approving Indirect Transfer of Control of Licenses 2024-08-09
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. G. T. Powell President and CEO STP Nuclear Operating Company South Texas Project P.O. Box 289 \1\/adsworth,TX 77483 March 27, 201 9
SUBJECT:
SOUTH TEXAS PROJECT, UNIT 2 -REVIEVV OF THE SPRING 2018 STEAM GENERATOR INSPECTIONS (EPID L-2018-LR0-0041)
Dear Mr. Powell:
By letter dated October 18, 2018 (Agencywide Documents Access and Management System Accession No. ML 182918356), STP Nuclear Operating Company (the licensee), submitted information summarizing the results of the spring 2018 steam generator inspections at South Texas Project, Unit 2. These inspections were performed during the 19th refueling outage. The U.S. Nuclear Regulatory Commission (NRC) staff has completed its review of the information and concludes that the licensee has provided the information required by the technical specifications.
In addition, the NRC staff did not identify additional issues that warrant followup actions. The staff's review summary is e_nclosed.
If you have any questions, please contact me at 301-415-1906 or at Lisa.Regner@nrc.gov.
Docket No. 50-499
Enclosure:
Review of Steam Generator Inspection Report cc: Listserv Lisa M. Regner, Senior Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation REVIEW OF THE 2018 STEAM GENERATOR INSPECTION REPORT STP NUCLEAR OPERATING COMPANY SOUTH TEXAS PROJECT, UNIT 2 DOCKET NO. 50-499 By letter dated October 18, 2018 (Agencywide Documents Access and Management System Accession No. ML 182918356), STP Nuclear Operating Company (the licensee), submitted information summarizing the results of the spring 2018 steam generator (SG) inspections at South Texas Project (STP), Unit 2. These inspections were performed during refueling outage 19. The four model Delta 94 SGs at STP, Unit 2, were designed by Westinghouse and installed in December 2002. These replacement SGs each contain 7,585 thermally treated Alloy 690 tubes. The tubes have a nominal outside diameter of 0.688 inches, a nominal wall thickness of 0.040 inches, and are supported by stainless steel tube support plates with trefoil-shaped holes. The U-bends of the tubes in rows 1 through 17 were thermally stress relieved after bending. The licensee provided the scope, extent, methods, and results of its SG tube inspections in the letter dated October 18, 2018. In addition, the licensee described corrective actions, such as tube plugging, taken in response to the inspection findings.
Based on the U.S. Nuclear Regulatory Commission (NRC) staff's review of the information provided by the licensee, the staff has the following observations and comments:
- A ding (DNG) is a baseline indication where the tubing inside diameter is less than normal. The degradation assessment specified that all DNGs greater than 5 volts, which were reported in the baseline examination, would be inspected with a +PointŽ probe coil. The licensee reported eight DNGs in the STP, Unit 2, SGs with greater than 5-volt signals and that they were inspected with a +PointŽ probe with no degradation identified.
- The licensee reported that use of the dent (DNT) indication code has been discontinued.
Prior cycle DNT indications are now associated with the DNG three-letter code.
- While performing inspections inside SG 2C, the battery compartment latch of an inspection camera opened, and a lithium battery fell into the tube bundle. Retrieval efforts were unsuccessful, and the battery was dispositioned to remain in the SG by engineering analysis.
Chemistry impacts were expected to be minimal, and a loose part wear analysis predicted that structural integrity limits would be maintained over the next three operating cycles. During startup operations, dissolution of the lithium-ion battery occurred and all impurities identified during the reactor heatup were reduced to acceptable levels, prior to exceeding 20 percent power. Enclosure Based on a review of the information provided, the NRC staff concludes that the licensee provided the information required by its technical specifications.
In addition, the staff concludes there are no technical issues that warrant followup 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.
SUBJECT:
SOUTH TEXAS PROJECT, UNIT 2 -REVIEW OF THE SPRING 2018 STEAM GENERATOR INSPECTIONS (EPID L-2018-LR0-0041)
DATED MARCH 27, 2019 . DISTRIBUTION:
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