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| Issue date | Title | Topic | |
|---|---|---|---|
| ML23270B836 | 26 September 2023 | Code Case N-752 Audit September 26, 2023, E-mail Providing Additional Information Regarding the Use of Owner'S Requirements and Engineering Judgment in Lieu of Code and Standards | Nondestructive Examination Aging Management License Renewal Operational leakage |
| ML22269A388 | 7 September 2022 | 02-Gamma Spectroscopy of Concrete Pucks | |
| RA-20-0280, Submittal of IWB-3640 Analytical Evaluation Performed to Accept an ASME Section XI Code Rejected Sub-Surface Flaw | 14 September 2020 | Submittal of IWB-3640 Analytical Evaluation Performed to Accept an ASME Section XI Code Rejected Sub-Surface Flaw | Safe Shutdown Earthquake Operating Basis Earthquake Finite Element Analysis |
| ML19242C728 | 28 August 2019 | Attachments 5 - 12: Thermal-Hydraulic Models for High Energy Line Break Transient Analysis, Duke Energy/Framatome Affidavits, Regulatory Requirements, Definitions, Time Critical Operator Actions and Feasibility Assessment for New Proposed T | Safe Shutdown Internal Flooding Flow Accelerated Corrosion Time Critical Operator Action Through-Wall Leakage Coast down GOTHIC Affidavit |
| RA-19-0223, Annual Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models Pursuant to 10CFR 50.46 | 30 May 2019 | Annual Report of Changes to or Errors in Emergency Core Cooling System Evaluation Models Pursuant to 10CFR 50.46 | |
| ML17031A431 | 26 January 2017 | Notification of Compliance with Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events and FLEX Final Integrated Plan | Safe Shutdown Boric Acid High winds Shutdown Margin Ultimate heat sink Tornado Missile Time to boil Safe Shutdown Earthquake Emergency Lighting FLEX Fukushima Dai-Ichi Spent Fuel Pool Instrumentation Earthquake GOTHIC Unidentified leakage |
| ML16230A282 | 17 August 2016 | Duke Power Company Oconee Nuclear Station Unit 2 Integrated Leak Rate Test of the Reactor Containment Building | Boric Acid Power Operated Valves |
| ML16152A052 | 31 May 2016 | ANP-3477NP, Rev. O, MRP-227-A Applicant/Licensee Action Item 6 Analysis | Non-Destructive Examination Stress corrosion cracking |
| ONS-2016-017, Request for Alternative to Codes and Standards Requirements Pursuant to 10 CFR 50.55a(z) to Satisfy 10 CFR 50.55a(h)(2) | 15 February 2016 | Request for Alternative to Codes and Standards Requirements Pursuant to 10 CFR 50.55a(z) to Satisfy 10 CFR 50.55a(h)(2) | Safe Shutdown Unanalyzed Condition Tornado Missile Commercial Grade Dedication Arc flash Finite Element Analysis Aging Management Large early release frequency Earthquake |
| ML16034A325 | 31 December 2015 | Revision 0 to Summary of Methodology Used for Seismic Capacity Evaluation of GMRS Mitigation Components | Safe Shutdown Earthquake Fukushima Dai-Ichi Earthquake |
| ML15218A297 | 6 August 2015 | Historic Temperature Data Including Record Highs for the Seneca | |
| ML15201A008 | 22 July 2015 | Staff Assessment of Information Provided Pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f), Seismic Hazard Reevaluations for Recommendation 2.1 of the Near-Term Task Force Review | Safe Shutdown Earthquake Fukushima Dai-Ichi Earthquake |
| ML15161A420 | 15 June 2015 | Review of the Spring 2014 Steam Generator Tube Inservice Inspection Report During Refueling Outage 27 | |
| ONS-2015-065, TIA 2014-04, Request for Technical Assistance Regarding the Adequacy of the Station Design and Licensing Bases for the Degraded Voltage Relay | 22 May 2015 | TIA 2014-04, Request for Technical Assistance Regarding the Adequacy of the Station Design and Licensing Bases for the Degraded Voltage Relay | Offsite Circuit Backfit Manual Operator Action |
| ONS-2015-058, Engineering Report 555, Oconee, Units 1, 2, and 3 - Ul 1569 Impact and Crush Tests on Keowee Underground Trench Power Cables for Duke Energy Carolinas, Llc. | 27 March 2015 | Engineering Report 555, Oconee, Units 1, 2, and 3 - Ul 1569 Impact and Crush Tests on Keowee Underground Trench Power Cables for Duke Energy Carolinas, Llc. | |
| ML16272A217 | 6 March 2015 | Revision 1 to Flood Hazard Reevaluation Report on Oconee Nuclear Station, Pp. 1-70, Dated March 6, 2015 (Redacted) | Safe Shutdown Safe Shutdown Earthquake Hydrostatic Operating Basis Earthquake Fukushima Dai-Ichi Earthquake |
| ML16272A218 | 6 March 2015 | Revision 1 to Flood Hazard Reevaluation Report on Oconee Nuclear Station, Appendices, Dated March 6, 2015 (Redacted) | Safe Shutdown |
| ML15072A217 | 25 February 2015 | Form OAR-1 Owners Activity Report (CC N-532-4) for Oconee Unit 1, Refueling Outage EOC 28 | Boric Acid Hydrostatic |
| ONS-2014-161, Submittal of the Expedited Seismic Evaluation Process Report (CEUS Sites) | 19 December 2014 | Submittal of the Expedited Seismic Evaluation Process Report (CEUS Sites) | Safe Shutdown Earthquake Probabilistic Risk Assessment FLEX B.5.b Fukushima Dai-Ichi Earthquake Power-Operated Valves |
| ML14218A807 | 27 August 2014 | NRC Staff Review of the Documentation Provided by Duke Energy for the Oconee Nuclear Station Concerning Resolution of GL 2004-02 Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Wat | Coatings |
| ONS-2014-074, Special Report Per Selected Licensee Commitment 16.9.9 Auxiliary Service Water (Asw) System and Main Steam Atmospheric Dump Valves and Oconee Transition from the Station Asw System to the Protected Service Water System | 15 August 2014 | Special Report Per Selected Licensee Commitment 16.9.9 Auxiliary Service Water (Asw) System and Main Steam Atmospheric Dump Valves and Oconee Transition from the Station Asw System to the Protected Service Water System | Safe Shutdown Shutdown Margin B.5.b |
| ML16272A216 | 30 April 2014 | Validation of Hrr Breach Hydrograph for Jocassee Dam, Dated April 30, 2014 (Redacted) | Hydrostatic Earthquake |
| ML15065A337 | 23 April 2014 | Response to NRC Request for Additional Information (RAI) Related to the MRP-227-A Applicant/Licensee Action Item #7 Analysis Supporting the Reactor Vessel Internals Inspection Plan Amendment Request (ANP-3267Q1NP (R1)) | Safe Shutdown Earthquake Finite Element Analysis Stress corrosion cracking Flow Induced Vibration Exclusive Use Affidavit |
| ML14076A000 | 2 April 2014 | Staff Assessment of the Seismic Walkdown Report Supporting Implementation of Near-Term Task Force Recommendation 2.3 Related to the Fukushima DAI-ICHI Nuclear Power Plant Accident | Safe Shutdown Unanalyzed Condition Safe Shutdown Earthquake Operating Basis Earthquake Fukushima Dai-Ichi Earthquake Seismic Walkdown Report |
| ONS-2014-040, 2013 Annual Commitment Change Report | 31 March 2014 | 2013 Annual Commitment Change Report | Unidentified leakage |
| ONS-2014-046, Seismic Hazard and Screening Report (CEUS Sites), Response to NRC 10 CFR 50.54(f) Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3.. | 31 March 2014 | Seismic Hazard and Screening Report (CEUS Sites), Response to NRC 10 CFR 50.54(f) Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3.. | Safe Shutdown Earthquake Probabilistic Risk Assessment Fukushima Dai-Ichi Design basis earthquake Earthquake Seismic Walkdown Report |
| ML14087A175 | 20 March 2014 | ANP-3267Q1NP, Rev. 0, Response to NRC Request for Additional Information (RAI) Related to the MRP-227-A Applicant/Licensee Action Item #7 Analysis Supporting the Reactor Vessel Internals Inspection Plan Amendment Request for Oconee, Units 1 | Safe Shutdown Earthquake Finite Element Analysis Stress corrosion cracking Flow Induced Vibration Exclusive Use Affidavit |
| ML13365A258 | 10 February 2014 | Interim Staff Evaluation Regarding Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) | Safe Shutdown Boric Acid High winds Shutdown Margin Ultimate heat sink Mission time Tornado Missile Time to boil Safe Shutdown Earthquake Internal Flooding Emergency Lighting FLEX B.5.b Fukushima Dai-Ichi Tornado Missile Protection Frazil ice Battery sizing Earthquake GOTHIC Unidentified leakage Power Uprate Measurement Uncertainty Recapture |
| ML14028A512 | 4 February 2014 | Mega-Tech Services, LLC, Technical Evaluation Report Regarding the Overall Integrated Plan for Oconee Nuclear Station, Units 1, 2, and 3, TAC Nos.: MF0782, MF0783, and MF0784 | Safe Shutdown Boric Acid High winds Shutdown Margin Ultimate heat sink Mission time Tornado Missile Time to boil Safe Shutdown Earthquake Internal Flooding Emergency Lighting FLEX B.5.b Fukushima Dai-Ichi Tornado Missile Protection Frazil ice Battery sizing Earthquake GOTHIC Unidentified leakage Power Uprate Measurement Uncertainty Recapture |
| ONS-2014-002, Special Report Per Technical Specification 5.6.6, Problem Investigation Process No. O-13-14447 | 16 January 2014 | Special Report Per Technical Specification 5.6.6, Problem Investigation Process No. O-13-14447 | Post Accident Monitoring |
| ML13339A348 | 30 November 2013 | ANP-3267NP, Revision 0,MRP-227-A Applicant/Licensee Action Item #7 Analysis for the Oconee Nuclear Station Units, Licensing Report | Aging Management Stress corrosion cracking License Renewal Flow Induced Vibration Exclusive Use Affidavit |
| ML13275A300 | 31 August 2013 | ANP-3208NP, Rev 1, Confirmation of Stress Relief for ONS-1, ONS-2, ONS-3, and CR-3 Core Support Shield Upper Flange Welds | |
| ML13275A299 | 31 August 2013 | ANP-3186NP, Rev 2, ONS License Renewal Scope and MRP-189, Rev. 1 Comparison | Safe Shutdown Functionality Assessment Aging Management License Renewal |
| ML13196A248 | 11 July 2013 | Duke Energy Carolinas, LLC (Duke Energy): Report Pursuant to 10 CFR 50.46, Changes to or Errors in an Evaluation Model | |
| ML13190A015 | 1 July 2013 | Aging Management Reviews for Newly Identified Systems, Structures and Components as of December 31, 2012 | Boric Acid Aging Management License Renewal |
| ML13192A157 | 15 May 2013 | Stone & Webster, Inc., Technical Report 1457690202-R-M-00005-0, NTTF 2.3 Seismic Peer Review Supplementary Report, Oconee Nuclear Station Unit 1. | Safe Shutdown Unanalyzed Condition Probabilistic Risk Assessment Fukushima Dai-Ichi |
| ML13119A041 | 31 March 2013 | Attachment 1, ANP-3186NP, Rev. 1, ONS License Renewal Scope and MRP-189, Rev. 1 Comparison. | Safe Shutdown Functionality Assessment Aging Management License Renewal |
| ML13119A042 | 31 March 2013 | Attachment 2, ANP-3208NP, Rev. 0, Confirmation and Stress Relief for ONS-1, ONS-2, ONS-3, and CR-3 Core Support Shield Upper Flange Welds. | |
| ML12347A252 | 27 November 2012 | Seismic Walkdown Information Request for Information Pursuant to Title 10 of Code of Federal Regulations Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from Fukushima Dai-ichi Accident 3/12/12 | Safe Shutdown Safe Shutdown Earthquake Operating Basis Earthquake Fukushima Dai-Ichi Design basis earthquake Earthquake Seismic Walkdown Report |
| ML16272A220 | 27 November 2012 | Enclosure 1: Flood Walkdown Report (NRC 50.54(f) NTTF Recommendation 2.3), Dated November 27, 2012 (Redacted) | Safe Shutdown Unanalyzed Condition B.5.b Fukushima Dai-Ichi Foreign Material Exclusion Earthquake Minimum staff |
| ML12347A253 | 16 November 2012 | Attachment 6: Nttp 2.3 Seismic Peer Review Report Oconee Nuclear Station Units 1,2 and 3 | Safe Shutdown Unanalyzed Condition High Radiation Area Probabilistic Risk Assessment Fukushima Dai-Ichi Seismically rugged Scaffolding Seismic Walkdown Report |
| ML14058A045 | 20 September 2012 | History of Oconee Flood Concerns | Backfit |
| ML12251A031 | 10 September 2012 | Review of the Spring 2011 Steam Generator Tube Inservice Inspections During End of Cycle 26 Refueling Outage | |
| ML12251A004 | 5 September 2012 | Unit 3 Cycle 27 Startup Testing Report | |
| ML12187A215 | 31 March 2012 | Attachment 1, ANP-2951, Rev. 002, Inspection Plan for the Oconee Nuclear Station, Units 1, 2, and 3, Reactor Vessel Internals, Amp/Application to Implementation MRP-227-A | Safe Shutdown Unanalyzed Condition Non-Destructive Examination Nondestructive Examination Functionality Assessment Finite Element Analysis Aging Management Stress corrosion cracking License Renewal EVT-1 Liquid penetrant Power Uprate Measurement Uncertainty Recapture |
| ML11180A011 | 23 June 2011 | Closure of 60-Day Interim Report Notification: Dubose National Energy Services, Inc | |
| ML110820865 | 31 March 2011 | Evaluation of 2010 (Cycle 24) Steam Generator (SG) Tube Inspections | |
| ML110040409 | 23 December 2010 | Draft, Regarding Review of Root Cause Analysis and Actions Addressing the Underground Pipe Damage to the Condensate Storage Tank Return Line | Coatings Operability Determination |
| ML12053A333 | 27 October 2010 | Areva Document No. 47-9048125-002, Update of Irradiation Embrittlement in BAW-10008 Part 1 Rev 1, Non-Proprietary | Aging Management Stress corrosion cracking License Renewal Earthquake |
| ML102990064 | 26 October 2010 | NRC Staff Assessment of Duke Energy Carolinas, Llc. Oconee External Flooding Issue | Safe Shutdown Significance Determination Process |