Letter Sequence Approval |
|---|
EPID:L-2019-LLA-0184, Proposed License Amendment Request to Revise the Oconee Nuclear Station Current Licensing Basis for High Energy Line Breaks Outside of the Containment Building (Approved, Closed) |
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MONTHYEARML19242C7282019-08-28028 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
Project stage: Request
ML19240A9252019-08-28028 August 2019
Proposed License Amendment Request to Revise the Oconee Nuclear Station Current Licensing Basis for High Energy Line Breaks Outside of the Containment Building
Project stage: Request
ML19242C7002019-08-28028 August 2019
Attachment 3: Updated Final Safety Analysis Report Retyped Changes
Project stage: Request
ML19301C8892019-10-30030 October 2019
Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
ML19331A5202019-12-12012 December 2019
Summary of Meeting with Duke Energy Carolinas, LLC to Discuss Submitted License Amendment Request for Oconee Nuclear Station, Units 1, 2, and 3 Regarding High Energy Line Break Licensing Basis
Project stage: Meeting
ML20036E3902020-02-11011 February 2020
Regulatory Audit in Support of Review of License Amendment Request to Revise the Licensing Basis for High Energy Line Breaks Outside of the Containment Building
Project stage: Approval
ML20125A3612020-05-0606 May 2020
SUNSI Request for Additional Information Revision of Licensing Bases for High Energy Line Breaks Outside of the Containment Building (EPID L-2019-LLA-0184) (Redacted)
Project stage: RAI
ML20209A4082020-07-29029 July 2020
Request for Withholding Information from Public Disclosure
Project stage: Withholding Request Acceptance
RA-20-0267, Proposed License Amendment Request to Revise Oconee Nuclear Station Current Licensing Basis for High Energy Line Breaks Outside of Containment Building - Responses to Request for Additional Information2020-09-17017 September 2020
Proposed License Amendment Request to Revise Oconee Nuclear Station Current Licensing Basis for High Energy Line Breaks Outside of Containment Building - Responses to Request for Additional Information
Project stage: Response to RAI
ML20266G2192020-11-0303 November 2020
Regulatory Audit Report Regarding License Amendment Request to Revise the Licensing Basis for High Energy Line Breaks Outside of the Containment Building
Project stage: Other
ML21006A0982021-03-15015 March 2021
Issuance of Amendment Nos. 421, 423, and 422 Revision of Licensing Basis for High Energy Line Breaks Outside of Containment (EPID L-2019-LLA-0184) (Public Version)
Project stage: Approval
2020-02-11
[Table View] |
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Category:Audit Plan
MONTHYEARML23269A0412023-08-22022 August 2023
Code Case N-752 Audit; August 22, 2023, E-mail Providing Additional Information Regarding Design and Quality Program Requirements
ML23178A0682023-07-0303 July 2023
Audit Plan Proposed Alternative to Use ASME Code Case N-752, Risk-Informed Categorization and Treatment for Repair/Replacement Activities in Class 2 & 3 Systems Section XI, Division 1
ML23075A0732023-04-0505 April 2023
License Renewal Regulatory Audit Regarding the Environmental Review of the Subsequent License Renewal Application Supplement (EPID Number L-2021-SLE-0002)
ML22111A3142022-05-0202 May 2022
Limited Aging Management Audit Plan Regarding the Subsequent License Renewal Application Review
ML21362A7532022-01-0606 January 2022
Regulatory Audit in Support of the License Amendment Request for One-Time Note to Technical Specification 3.7.7, Low Pressure Service Water (LPSW) System
ML21263A0312021-09-21021 September 2021
License Renewal Regulatory Audit Regarding the Environmental Review of the Subsequent License Renewal Application
ML21196A0762021-07-23023 July 2021
Aging Management Audit Plan Regarding the Subsequent License Renewal Application Review
ML20036E3902020-02-11011 February 2020
Regulatory Audit in Support of Review of License Amendment Request to Revise the Licensing Basis for High Energy Line Breaks Outside of the Containment Building
ML19037A0052019-02-0808 February 2019
Regulatory Audit in Support of Review of License Amendment Request No. 2018-02
ML18032A4612018-03-0505 March 2018
Regulatory Audit in Support of Review of License Amendment Request No. 2017-03
ML18004A0122018-01-0404 January 2018
Regulatory Audit in Support of Review of Proposed Alternative (CAC Nos. MF7365, MF7366 and MF7367; EPID No. L-2016-LLR-001)
ML17202U7312017-07-25025 July 2017
Regulatory Audit in Support of License Amendment Request No. 2015-03
ML17177A4462017-07-0606 July 2017
Audit Plan for Licensee Responses Concerning Seismic Hazard Reevaluations Related to Request for Information -(50.54(F) Letter) Regarding Recommendation 2.1 of the Near-Term Task Force
ML16259A1892016-12-0505 December 2016
Nuclear Regulatory Commission Plan for the Audit of Mitigation Strategies Assessment Submittals Related to Order EA-12-049, Order to Modify Licenses With Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events
ML15281A2932015-10-22022 October 2015
Plan for the Regulatory Audit Regarding License Amendment Request for Alternate Fission Gas Gap Release Fractions
ML15226A1852015-09-0808 September 2015
Nuclear Regulatory Commission Plan for the Audit of Duke Energy Carolinas, LLC Interim Evaluations Associated with Reevaluated Seismic Hazard Implementing Near-Term Task Force Recommendation 2.1 - Seismic
ML15160A6642015-06-10010 June 2015
Plan for the Onsite Audit Regarding Implementation of Mitigating Strategies and Reliable Spent Fuel Instrumentation Related to Orders EA-12-049 and EA-12-051
ML15118A4602015-05-0808 May 2015
Audit Plan for the Flood Hazard Reevaluation Report Submittal Relating to the Near-Term Task Force Recommendation 2.1 - Flooding
ML14356A0032015-02-10010 February 2015
Audit of Licensee Responses to the Expedited Seismic Evaluation Process to Support Implementation of Near-Term Task Force Recommendation 2.1, Seismic
ML14083A6202014-03-26026 March 2014
Nuclear Regulatory Commission Audits of Licensee Responses to Reliable Spent Fuel Pool Instrumentation Order EA-12-051
2023-08-22
[Table view]
Category:Memoranda
MONTHYEARML23118A2852023-05-0202 May 2023
Public Meeting Summary - 2022 Annual Assessment Meeting Regarding Catawba Nuclear Station, McGuire Nuclear and Oconee Nuclear Station
ML22299A0482023-01-11011 January 2023
Final Environmental Assessment and Finding of No Significant Impact for the Duke Energys Updated Decommissioning Funding Plans Submitted in Accordance with 10 CFR 72.30(C) for Oconee Nuclear Station Independent Spent Fuel Storage Installati
ML22349A1482022-12-19019 December 2022
Transmittal Letter for Oconee SE for SLRA Review
ML22193A2542022-08-0505 August 2022
SLRA - Audit Report
ML22111A3142022-05-0202 May 2022
Limited Aging Management Audit Plan Regarding the Subsequent License Renewal Application Review
ML22084A6142022-04-0404 April 2022
SLRA - Summary of March 16, 2022 (Closed Public Meeting)
ML22024A1392022-03-11011 March 2022
SLRA - Request for Withholding Information
ML21347A0102021-12-20020 December 2021
Proposed Alternative to Implement ASME Code Case OMN-26
ML21279A1542021-11-0808 November 2021
August 25, 2021, Oconee Nuclear Station, Units 1, 2, and 3 Subsequent License Renewal Application Public Environmental Scoping Meeting Summary Memo
ML21064A3502021-07-26026 July 2021
OEDO-21-00048 - Oconee Nuclear Station, Units 1, 2, and 3 - Response Memorandum
ML21195A2692021-07-14014 July 2021
Meeting Summary: Pre-Submittal Meeting for the Oconee Subsequent License Renewal Application (EPID Number: L-2020-RNW-0028) (Docket Numbers: 50 269, 50-270, and 50-287) - Memo
ML21055A8672021-04-22022 April 2021
Memo to File: Final Ea/Fonsi of Independent Spent Fuel Storage Facilities Decommissioning Funding Plans Related to Oconee
ML21099A0932021-04-0909 April 2021
Public Meeting Summary - 2020 Annual Assessment Meeting Regarding Catawba, McGuire, and Oconee Nuclear Stations
ML20357B1332020-12-30030 December 2020
Transmittal Memo - Delivery of Partial Deliverable Associated with the Trace Code Maintenance, Plant Model Maintenance, and Plant Model Development to Support Licensing Actions and Emergent Technical Issues User Need
ML20141L4172020-05-20020 May 2020
EOC Public Meeting Summary
ML20036E3902020-02-11011 February 2020
Regulatory Audit in Support of Review of License Amendment Request to Revise the Licensing Basis for High Energy Line Breaks Outside of the Containment Building
ML19102A3352019-04-12012 April 2019
Public Meeting Summary - Oconee Nuclear Station Docket Nos. 50-269, 50-270, and 50-287
ML19037A0052019-02-0808 February 2019
Regulatory Audit in Support of Review of License Amendment Request No. 2018-02
ML18226A2152019-01-22022 January 2019
Response to Task Interface Agreement 2014-04, Adequacy of the Oconee Nuclear Station Design and Licensing Bases for Degraded Voltage Protection (TAC Nos. MF4622, MF4623, and MF4624; EPID L-2014-LRA-0003)
ML18082A0582018-03-23023 March 2018
Summary of Meeting with Oconee Nuclear Station to Discuss Annual Assessment of Oconee for the Period of January 01, 2017 - December 31, 2017
ML18032A4612018-03-0505 March 2018
Regulatory Audit in Support of Review of License Amendment Request No. 2017-03
ML18004A0122018-01-0404 January 2018
Regulatory Audit in Support of Review of Proposed Alternative (CAC Nos. MF7365, MF7366 and MF7367; EPID No. L-2016-LLR-001)
ML17264A0312017-09-29029 September 2017
Draft Response to Task Interface Agreement 2014-05 to Licensee Oconee Design Analysis for Single Failure/Integration of Class 1E Direct Current Control Cabling in Raceways with High Energy Power Cabling
ML17202U7312017-07-25025 July 2017
Regulatory Audit in Support of License Amendment Request No. 2015-03
ML17103A0292017-04-13013 April 2017
Summary of Meeting to Provide Opportunities to Discuss Annual Assessment of Oconee Nuclear Station Units 1, 2 and 3
ML16088A2042016-03-28028 March 2016
Memo T Bowers from s Ruffin, Technical Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations W/ Encl 2 (Template)
ML16088A2052016-03-28028 March 2016
Enclosure 1 - (72.30 DFP Reviews to Be Completed 2015) - Memo T Bowers from s Ruffin, Technial Assistance Requests - Review 2015 Tri-Annual Decommissioning Funding Plans for Multiple Independent Spent Fuel Storage Installations
ML16061A5652016-03-0909 March 2016
Request for Additional Information for Relief Request 14-ON-001, Letdown Cooler Nozzle Welds
ML16056A5832016-02-26026 February 2016
and 3, Draft Request for Additional Information License Amendment Request to Adopt Emergency Action Level Scheme Based on NEI 99-01 Rev.6
ML16021A3452016-01-29029 January 2016
Draft Request for Additional Information License Amendment to Add High Flux Trip for 3 Reactor Coolant Pump Operation
ML15364A3802016-01-0808 January 2016
Draft Request for Additional Information Relief Request ON-GRR-01
ML15363A2962015-12-29029 December 2015
Special Inspection Charter to Evaluate the Power Cable Failures/Degradations on the Oconee Units 1 and 3 Startup Transformers
ML15345A3982015-12-15015 December 2015
Draft Request for Additional Information License Amendment Request to Adopt Emergency Action Level Scheme Based on NEI 99-01 Rev. 6
ML15265A1272015-09-17017 September 2015
Memoranda to C. Bladey Notice of Availability of Exemption for Duke Energy Carolinas, LLC, Oconee Nuclear Station Independent Spent Fuel Storage Installation
ML15231A1922015-08-19019 August 2015
NRC June 9 2009 Memo Revision
ML15233A4952015-08-14014 August 2015
Memo to C Bladey, Notice of Environmental Assessment and Finding of No Significant Impact - Duke Ene4rgy Carolinas LLC, Oconee Nuclear Station ISFSI - Admin EA Memo
ML15181A4332015-07-0707 July 2015
Closure of Licensee Responses to External Flooding Letters
ML15099A5612015-05-11011 May 2015
Safety Evaluation for Duke Submittal on Electronic Records (Nirma)
ML15089A1642015-04-27027 April 2015
Summary of February 25, 2015, Partially Closed Meeting with Industry Stakeholders Regarding the Babcock and Wilcox Loss of Coolant Accident Evaluation Model Analysis
ML15113A6262015-04-23023 April 2015
April 14, 2015 Summary of Public Meeting on Oconee Nuclear Station, Units 1, 2 and 3 to Discuss the Annual Assessment
ML14356A0052014-12-31031 December 2014
Summary of December 3, 2014, Category 1 Public Meeting with Duke Energy Carolinas, LLC to Discuss NTTF Recommendation 2.1, Flooding Response for Oconee Nuclear Station, Units 1, 2, and 3
ML14311A8622014-11-0707 November 2014
Request for Technical Assistance Regarding the Adequacy of the Oconee Station Design and Licensing Bases for the Degraded Voltage Relay Protection Design (TIA 2014-04) (Final)
ML14147A3652014-05-27027 May 2014
Annual Assessment Public Meeting Summary Memo
ML14058A0162014-02-0404 February 2014
Draft Memo from M. Cunningham, NRR Et Al to E. Leeds, NRR on Oconee Flood Protection and the Jocassee Dam Hazard Basis for NRC Allowing Continued Operation
ML14058A0182014-02-0404 February 2014
Draft Memo from M. Cunningham, NRR Et Al to E. Leeds, NRR on Oconee Flood Protection and the Jocassee Dam Hazard Basis for NRC Allowing Continued Operation
ML14058A0172014-02-0404 February 2014
Draft Memo from M. Cunningham, NRR Et Al to E. Leeds, NRR on Oconee Flood Protection and the Jocassee Dam Hazard Basis for NRC Allowing Continued Operation
ML14055A4742014-02-0404 February 2014
Draft Memorandum from G. Cunningham, NRR to E. Leeds, NRR on Oconee Flood Protection and the Jocassee Dam Hazard Basis for Continued Operation
ML13351A3172013-12-24024 December 2013
Safety Evaluation Input Regarding Temporary Technical Specification Change Request to Extend the Completion Time for an Inoperable Keowee Hydro Unit
ML13303B8282013-11-0101 November 2013
Notice of Meeting with Duke Energy to Discuss Proposed License Amendment Request Regarding Temporary Technical Specification Change for One Keowee Hydro Unit Inoperable - Oconee Nuclear Station, Units 1, 2, and 3
ML13295A3062013-10-22022 October 2013
Meeting Notice with Duke Energy Carolinas, LLC Discuss the Planned Modifications Related to the Fukushima Flood Hazard Reevaluations for the Sites Operated by Duke Energy Carolinas, LLC
2023-05-02
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 11, 2020 MEMORANDUM TO: Michael T. Markley, Chief Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM: Michael Mahoney, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 -
REGULATORY AUDIT IN SUPPORT OF REVIEW OF LICENSE AMENDMENT REQUEST TO REVISE THE LICENSING BASIS FOR HIGH ENERGY LINE BREAKS OUTSIDE OF THE CONTAINMENT BUILDING (EPID NO. L-2019-LLA-0184)
By letter RA-19-0253 dated August 28, 2019, Duke Energy Carolinas, LLC submitted a License Amendment Request for Oconee Nuclear Station, Units 1, 2, and 3, as described in the Updated Final Safety Analysis Report (UFSAR), regarding revisions to the licensing basis for high energy line breaks (HELB) outside of the containment building.
Staff from the U.S. Nuclear Regulatory Commissions (NRCs) Office of Nuclear Reactor Regulation will conduct an audit to support its review of this request at NRC Headquarters in Rockville, Maryland, from February 18, 2020, to March 31, 2020. Based on information reviewed in the Headquarters-based audit, requests for additional information and/or an on-site audit may be required. The audit plan is enclosed.
Sincerely,
/RA/
Michael Mahoney, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
As stated cc: Listserv
REGULATORY AUDIT PLAN BY THE OFFICE OF NUCLEAR REACTOR REGULATION OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 DOCKET NOS. 50-269, 50-270, AND 50-287
1.0 BACKGROUND
By letter RA-19-0253 dated August 28, 2019 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19240A814), Duke Energy Carolinas, LLC submitted a License Amendment Request for Oconee Nuclear Station, Units 1, 2, and 3, as described in the Updated Final Safety Analysis Report (UFSAR), regarding revisions to the licensing basis for high energy line breaks (HELB) outside of the containment building.
The licensee proposed to revise the UFSAR to establish normal plant systems, proposed service water (PSW), and/or the standby shutdown facility (SSF) as the assured mitigation path following a HELB. The licensee also proposed to credit several plant modifications to enhance the stations capability to withstand the dynamic effects of a damaging HELB.
A public meeting was held on November 6, 2019 (meeting summary found at ADAMS Accession No. ML19331A520). The U.S. Nuclear Regulatory Commission (NRC) staff asked questions related to time critical operator actions, human performance, thermal hydraulic analysis, impact of HELB on radiation protection, environmental qualification of the safe shutdown facility related components located in the east and west penetration rooms (EPR and WPR) and cask decontamination tank rooms, and certain piping analysis.
The NRR Office Instruction LIC-111, Regulatory Audits (ADAMS Accession No. ML082900195), states that a regulatory audit is a planned, license or regulation-related activity that includes the examination of primarily non-docketed information. A regulatory audit is conducted with the intent to gain understanding, to verify information, and/or to identify information that will require docketing to support the basis of the licensing or regulatory decision.
2.0 REGULATORY AUDIT BASIS The NRC staff will perform the audit to support its evaluation of whether the licensees proposed amendments can be approved in accordance with Title 10 of the Code of Federal Regulations (10 CFR), Section 50.90.
3.0 REGULATORY AUDIT SCOPE AND METHODOLOGY The NRC staff will review the licensees information related to time critical operator actions, impact of HELB on radiation protection, environmental qualification of the safe shutdown facility related components located in the east and west penetration and the cask decontamination tank rooms, location of all postulated breaks and critical cracks, including sizes, and other analysis and documents to determine if any additional information will require docketing to support or develop conclusions for the NRC staffs safety evaluation.
Enclosure
4.0 INFORMATION AND OTHER MATERIAL NECESSARY FOR THE AUDIT The NRC staff requests the licensee to have the following information readily available and accessible for the NRC staffs review, via an internet-based portal:
Information related to:
- 1. Details of the new time critical operator actions. Specifically, those discussed in Attachment 11, Time Critical Operator Actions of the licensee submittal dated August 28, 2019.
- 2. a. Detailed arrangement drawings of:
- i. Turbine Building ii. Auxiliary Building iii. Penetration Rooms
- b. Descriptions for the systems credited for HELB mitigation (i.e., SSF systems, PSW, emergency feedwater (EFW), and high head safety injection).
- 3. Environmental qualification of electrical equipment.
- a. The change and temperature and pressure profile change for components located inside the EPR & WPR, as a result of the new analysis for postulated Main Steam (MS) HELB and Main Feedwater (MFW) HELB - a diagram would be useful to show the change in the profiles.
- b. Environmental qualification reports or documentation of the components located in EPR, including the information for the equipment below and specify where the equipment is located.
Equipment ID Equipment Type Manufacturer/Model xFDWVA0103 Motor-operated valve Limitorque xFDWIP0315 Signal Converter Fisher 546NS xHPISV0090 Solenoid Valve ASCO NP8316 xHPIFT0159 Flow Transmitter Rosemount 1154 xLP VA0018 Motor-operated valve Rotork xLPIFT0005P Flow Transmitter Rosemount 1153B xLPITE0209 Thermocouple Conax 7S22 xLPSPT0013 Pressure Transmitter Rosemount 1154 xLPSSV1054 Solenoid Valve Valcor V70900-65 xLPSVA0021 Motor-operated Valve Limitorque xRC PS0455 Pressure Switch Barton 581 Electrical Penetration Assemblies Conax Electrical Penetration Assemblies D. G. Obrien Electrical Penetration Assemblies Viking States Terminal Blocks Cabling
- 4. Location of all postulated breaks and critical cracks, including sizes.
If arrangement drawings lack sufficient detail to establish separation of structures, systems and components credited with HELB mitigation, an on-site audit will be performed to evaluate the potential for spatial interactions between HELB locations and equipment that mitigates the event.
The NRC staff will determine whether it needs to request any additional documents to be available on the portal after reviewing the above information.
5.0 TEAM ASSIGNMENTS AND LOGISTICS The audit team will consist of the following NRC staff:
- Michael Breach, Mechanical Engineering and Inservice Testing Branch (EMIB)
- Steve Jones, Containment and Plant Systems Branch (SCPB)
- DaBin Ki, Operator Licensing and Human Factors Branch (IOLB)
- Brian Green, Operator Licensing and Human Factors Branch (IOLB)
The NRC staff will conduct a teleconference with the licensee for the purposes of introductions and discussing the purpose and scope of the audit and information needs. The NRC staff will also confirm the sensitivity of any information discussed or presented on the online portal.
The audit will occur via an internet-based portal at NRC Headquarters in Rockville, Maryland, from February 18 through March 31, 2020. Based on information on the internet-based portal, requests for additional information and/or an on-site audit may need to be performed. The NRC staff requests the licensee to have the information discussed in Section 4.0 readily available and accessible for the NRC staffs review via an internet-based portal. The NRC staff also requests the licensee to have its staff available at mutually agreeable times during normal business hours (e.g., Monday - Thursday, 9:00 a.m. to 4:00 p.m., Eastern Time) by telephone if the NRC staff has any questions during the audit. The NRC staff will not conduct an exit meeting; however, the NRCs licensing project manager will inform the licensee via routine communications when the NRC staff no longer needs access to the portal.
6.0 DELIVERABLES After the audit, the NRC staff will develop any additional requests for information, as needed, which it will provide the licensee via separate docketed correspondence. The NRC staff intends to issue an audit summary report within 90 days of completion of the audit.
ML20036E390 *by email OFFICE NRR/DORL/LPL2-1/PM NRR/DORL/LPL2-1/LA NRR/DSS/SCPB/BC*
NAME MMahoney KGoldstein BWittick DATE 02/03/2020 02/07/2020 02/05/2020 OFFICE NRR/DEX/EENB/BC* NRR/DORL/LPL2-1/BC NRR/DORL/LPL2-1/PM NAME TMartinez MMarkley MMahoney DATE 02/05/2020 02/11/2020 02/11/2020
