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MONTHYEARONS-2015-045, License Amendment Request to Change the Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6, License Amendment Request No. 2015-042015-06-23023 June 2015 License Amendment Request to Change the Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6, License Amendment Request No. 2015-04 Project stage: Request ML15343A3402015-12-0909 December 2015 Draft RAIs Oconee-LAR to Adopt EAL Scheme NEI 99-01 Rev. 6 Project stage: Draft RAI ML15343A3372015-12-0909 December 2015 E-mail from J. Whited to C. Wasik-DRAFT RAIs Oconee LAR to Adopt EAL Scheme Change NEI 99-01 Rev. 6 Project stage: RAI 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 Project stage: Draft RAI ONS-2016-008, Response to Request for Additional Information Regarding the License Amendment Request to Change to Emergency Plan to Upgrade Emergency Action Levels Based on NEI 99-01, Revision 62016-02-0404 February 2016 Response to Request for Additional Information Regarding the License Amendment Request to Change to Emergency Plan to Upgrade Emergency Action Levels Based on NEI 99-01, Revision 6 Project stage: Response to RAI 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 Project stage: Draft RAI ONS-2016-028, Response to Request for Additional Information (RAI) Re License Amendment Request (LAR) to Change Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 62016-03-18018 March 2016 Response to Request for Additional Information (RAI) Re License Amendment Request (LAR) to Change Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6 Project stage: Response to RAI ML16109A0932016-05-26026 May 2016 Issuance of License Amendments Regarding Emergency Action Level Scheme Change Project stage: Approval 2016-02-26
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Category:Emergency Preparedness-Emergency Plan
MONTHYEARRA-23-0325, Submittal of Procedures CSD-EP-HNP-0101-01, 02, CSD-EP-ONS-0101-01, CSD-EP-RNP-0101-01, and EP-RNP-EPLAN-ANNEX2024-01-0808 January 2024 Submittal of Procedures CSD-EP-HNP-0101-01, 02, CSD-EP-ONS-0101-01, CSD-EP-RNP-0101-01, and EP-RNP-EPLAN-ANNEX RA-23-0281, Procedure EP-ALL-EPLAN, Duke Energy Common Emergency Plan, Revision 5, Summary of Changes2023-11-0101 November 2023 Procedure EP-ALL-EPLAN, Duke Energy Common Emergency Plan, Revision 5, Summary of Changes RA-23-0222, On-Shift Staffing Analysis (Ossa), Revision 12023-08-23023 August 2023 On-Shift Staffing Analysis (Ossa), Revision 1 RA-22-0313, Emergency Action Level (EAL) Technical Basis Document, Revision 4, EAL Wallchart, Revision 3 and Alternate TSC and OSC Renovations2022-10-27027 October 2022 Emergency Action Level (EAL) Technical Basis Document, Revision 4, EAL Wallchart, Revision 3 and Alternate TSC and OSC Renovations RA-22-0151, Duke Energy Common Emergency Plan, Revision 2, Summary of Changes2022-05-24024 May 2022 Duke Energy Common Emergency Plan, Revision 2, Summary of Changes RA-22-0070, Emergency Plan Annex, Revision 1, Emergency Action Level (EAL) Technical Basis Document, Revision 3, and EAL Wallchart, Revision 22022-02-10010 February 2022 Emergency Plan Annex, Revision 1, Emergency Action Level (EAL) Technical Basis Document, Revision 3, and EAL Wallchart, Revision 2 ML22018A0282022-01-18018 January 2022 Region 2 RFI - 2022 Exercise Inspections - Rev1 RA-21-0197, William, Units 1 and 2, License Amendment Request to Relocate the Duke Energy Emergency Operations Facility2021-12-14014 December 2021 William, Units 1 and 2, License Amendment Request to Relocate the Duke Energy Emergency Operations Facility RA-21-0276, Duke Energy Common Emergency Plan and Brunswick Steam Electric Plant and Catawba Nuclear Station Emergency Plan Annexes, Revision 1 Summary of Changes2021-11-0202 November 2021 Duke Energy Common Emergency Plan and Brunswick Steam Electric Plant and Catawba Nuclear Station Emergency Plan Annexes, Revision 1 Summary of Changes RA-21-0136, Supplemental Information Regarding License Amendment Request for Common Emergency Plan2021-05-0404 May 2021 Supplemental Information Regarding License Amendment Request for Common Emergency Plan RA-21-0137, Duke Energy Carolinas, LLC - Emergency Plan Revision 2021-0012021-04-28028 April 2021 Duke Energy Carolinas, LLC - Emergency Plan Revision 2021-001 RA-21-0063, 1, 2; Catawba Nuclear Station 1, 2; H. B. Robinson Steam Electric Plant 2; Mcgguire Nuclear Station 1, 2; Oconee Nuclear Station 1, 2, 3; Shearon Harris Nuclear Power Plant 1 - Response to RAI Re Amend for Emergency Plan2021-03-11011 March 2021 1, 2; Catawba Nuclear Station 1, 2; H. B. Robinson Steam Electric Plant 2; Mcgguire Nuclear Station 1, 2; Oconee Nuclear Station 1, 2, 3; Shearon Harris Nuclear Power Plant 1 - Response to RAI Re Amend for Emergency Plan RA-20-0387, EAL Technical Bases Document Revision 0022020-12-16016 December 2020 EAL Technical Bases Document Revision 002 RA-20-0307, Summary of Changes to Emergency Plan, Effective 8/24/20202020-09-23023 September 2020 Summary of Changes to Emergency Plan, Effective 8/24/2020 RA-20-0043, Station. Units 1, 2, and 3 - Emergency Plan Revision 2020-0012020-02-0606 February 2020 Station. Units 1, 2, and 3 - Emergency Plan Revision 2020-001 RA-19-0469, Emergency Plan Revisions 2019-005, 2019-006, and 2019-0072019-12-18018 December 2019 Emergency Plan Revisions 2019-005, 2019-006, and 2019-007 RA-19-0368, Emergency Plan Revision 2019-0042019-09-0909 September 2019 Emergency Plan Revision 2019-004 RA-19-0343, Emergency Plan Revision 2019-0032019-08-22022 August 2019 Emergency Plan Revision 2019-003 RA-19-0122, Submittal of Emergency Plan Revision 2019-0022019-02-26026 February 2019 Submittal of Emergency Plan Revision 2019-002 RA-19-0105, Emergency Plan Revision 2019-0012019-02-0707 February 2019 Emergency Plan Revision 2019-001 ONS-2018-006, Summary of Changes to Emergency Plan2018-01-0404 January 2018 Summary of Changes to Emergency Plan ONS-2017-078, Emergency Plan Revision 2017-0042017-11-0909 November 2017 Emergency Plan Revision 2017-004 ONS-2017-071, Oconee Nuclear Station, Units 1, 2 & 3, Submittal of Emergency Plan Revision 2017-0032017-10-19019 October 2017 Oconee Nuclear Station, Units 1, 2 & 3, Submittal of Emergency Plan Revision 2017-003 ML17299A1272017-10-19019 October 2017 Submittal of Emergency Plan Revision 2017-003 ONS-2017-071, Emergency Plan Revision 2017-003, Figure P12017-10-19019 October 2017 Emergency Plan Revision 2017-003, Figure P1 ONS-2017-071, Oconee Nuclear Station, Units 1, 2 & 3, Emergency Plan Revision 2017-0032017-09-30030 September 2017 Oconee Nuclear Station, Units 1, 2 & 3, Emergency Plan Revision 2017-003 ML17299A1282017-09-30030 September 2017 Emergency Plan Revision 2017-003 ONS-2017-030, Submittal of Oconee Nuclear Station, Units 1, 2, and 3, Emergency Plan Revision 2017-0022017-04-20020 April 2017 Submittal of Oconee Nuclear Station, Units 1, 2, and 3, Emergency Plan Revision 2017-002 ML17118A0232017-04-20020 April 2017 Oconee Nuclear Station Emergency Plan Revision 2017-002. Part 1 of 2 ONS-2017-030, Emergency Plan Revision 2017-002. Part 2 of 22017-04-20020 April 2017 Emergency Plan Revision 2017-002. Part 2 of 2 ML17118A0222017-04-20020 April 2017 Submittal of Oconee Nuclear Station, Units 1, 2, and 3, Emergency Plan Revision 2017-002 ONS-2017-034, Emergency Plan Revision 2017-0012017-04-20020 April 2017 Emergency Plan Revision 2017-001 ONS-2017-030, Oconee Nuclear Station Emergency Plan Revision 2017-002. Part 1 of 22017-04-20020 April 2017 Oconee Nuclear Station Emergency Plan Revision 2017-002. Part 1 of 2 ONS-2016-058, Emergency Plan Revision 2016-0012016-06-29029 June 2016 Emergency Plan Revision 2016-001 ONS-2016-028, Response to Request for Additional Information (RAI) Re License Amendment Request (LAR) to Change Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 62016-03-18018 March 2016 Response to Request for Additional Information (RAI) Re License Amendment Request (LAR) to Change Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6 RA-15-0024, Transmits Emergency Plan Implementing Procedures2015-06-15015 June 2015 Transmits Emergency Plan Implementing Procedures ONS-2015-050, Emergency Plan Revision 2015-0032015-05-20020 May 2015 Emergency Plan Revision 2015-003 ONS-2014-146, Emergency Plan Revision 2014-0022014-11-10010 November 2014 Emergency Plan Revision 2014-002 ONS-2013-015, Emergency Plan, Volume a, Revision 2013-012013-11-14014 November 2013 Emergency Plan, Volume a, Revision 2013-01 ML12363A1662012-12-14014 December 2012 Development of Evacuation Time Estimates, Appendix J - Appendix N ML12363A1652012-12-14014 December 2012 Development of Evacuation Time Estimates, Section 9 - Appendix H, Page H-29 ML12363A1672012-11-30030 November 2012 Development of Evacuation Time Estimates, Cover - Section 8 2024-01-08
[Table view] Category:Letter type:ONS
MONTHYEARONS-2018-025, 2017 Annual Radiological Environmental Operating Report (AREOR)2018-05-15015 May 2018 2017 Annual Radiological Environmental Operating Report (AREOR) ONS-2018-024, 2017 Annual Radioactive Effluent Release Report (ARERR)2018-04-30030 April 2018 2017 Annual Radioactive Effluent Release Report (ARERR) ONS-2018-032, Ufsar/Selected Licensee Commitment Changes2018-04-17017 April 2018 Ufsar/Selected Licensee Commitment Changes ONS-2018-029, Technical Specifications Task Force (TSTF) - 448, Revision 3, Control Room Habitability, License Amendment Request No. 2015-03, Supplement 32018-04-0404 April 2018 Technical Specifications Task Force (TSTF) - 448, Revision 3, Control Room Habitability, License Amendment Request No. 2015-03, Supplement 3 ONS-2018-027, Oconee, Units 1, 2, and 3, Submittal of Emergency Plan Revision 2018-0022018-03-28028 March 2018 Oconee, Units 1, 2, and 3, Submittal of Emergency Plan Revision 2018-002 ONS-2018-023, Response to Nrc'S Request for Additional Information Regarding Relief Request 17-ON-001; Alternative to Extend the Code Case N-770, Inspection Item B, Examination Frequency2018-03-20020 March 2018 Response to Nrc'S Request for Additional Information Regarding Relief Request 17-ON-001; Alternative to Extend the Code Case N-770, Inspection Item B, Examination Frequency ONS-2018-017, Oconee, Units 1, 2, and 3, Submittal of Revised Evaluation to Emergency Plan2018-03-15015 March 2018 Oconee, Units 1, 2, and 3, Submittal of Revised Evaluation to Emergency Plan ONS-2018-021, ISFSI - Submittal of 2017 Annual Effluent Release Report2018-03-0101 March 2018 ISFSI - Submittal of 2017 Annual Effluent Release Report ONS-2018-020, Refuel 28 (O2R28) In-service Inspection (ISI) and Steam Generator In-service Inspection (SG-ISI) Report, Fifth 10-Year ISI Interval2018-02-26026 February 2018 Refuel 28 (O2R28) In-service Inspection (ISI) and Steam Generator In-service Inspection (SG-ISI) Report, Fifth 10-Year ISI Interval ONS-2018-013, Technical Specification Bases Changes2018-02-22022 February 2018 Technical Specification Bases Changes ONS-2018-015, Duke Energy Response to Request for Additional Information; Request for Alternative to Codes and Standards Requirements Pursuant to 10 CFR 50.55a(z) to Satisfy 10 CFR 50.55a(h)(2) Associated with Bronze Tape Wrapped Emergency Power Cabl2018-02-19019 February 2018 Duke Energy Response to Request for Additional Information; Request for Alternative to Codes and Standards Requirements Pursuant to 10 CFR 50.55a(z) to Satisfy 10 CFR 50.55a(h)(2) Associated with Bronze Tape Wrapped Emergency Power Cables i ONS-2018-014, License Amendment Request (LAR) for Changes to the Duke Energy Physical Security Plan - License Amendment Request No. 2018-012018-02-12012 February 2018 License Amendment Request (LAR) for Changes to the Duke Energy Physical Security Plan - License Amendment Request No. 2018-01 ONS-2018-019, Submittal of Emergency Plan, Section B2018-02-0505 February 2018 Submittal of Emergency Plan, Section B ONS-2018-011, Ufsar/Selected Licensee Commitment Changes2018-01-25025 January 2018 Ufsar/Selected Licensee Commitment Changes ONS-2017-087, Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from ...2017-12-0404 December 2017 Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from ... ONS-2017-083, Core Operating Limits Report (COLR) for Cycle 29 ONEl-0400-491, Revision 02017-11-21021 November 2017 Core Operating Limits Report (COLR) for Cycle 29 ONEl-0400-491, Revision 0 ONS-2017-041, Revision to Tornado/Helb Mitigation Strategies and Regulatory Commitments2017-11-15015 November 2017 Revision to Tornado/Helb Mitigation Strategies and Regulatory Commitments ONS-2017-085, Duke Energy Comments on the October 24, 2017, Public Meeting with NRC Committee to Review Generic Requirements (CRGR)2017-11-15015 November 2017 Duke Energy Comments on the October 24, 2017, Public Meeting with NRC Committee to Review Generic Requirements (CRGR) ONS-2017-079, Supplemental Information to Support NRC Review of Relief Request No. 17-0N-001; Alternative to Extend the Code Case N-770, Inspection Item B Examination Frequency2017-11-13013 November 2017 Supplemental Information to Support NRC Review of Relief Request No. 17-0N-001; Alternative to Extend the Code Case N-770, Inspection Item B Examination Frequency ONS-2017-078, Emergency Plan Revision 2017-0042017-11-0909 November 2017 Emergency Plan Revision 2017-004 ONS-2017-074, Proposed Amendment to the Renewed Facility Operating Licenses Regarding Revisions to the Updated Final Safety Analysis Report Section Associated with Tile Standby Shutdown Facility License Amendment Request No. 2017-032017-10-20020 October 2017 Proposed Amendment to the Renewed Facility Operating Licenses Regarding Revisions to the Updated Final Safety Analysis Report Section Associated with Tile Standby Shutdown Facility License Amendment Request No. 2017-03 ONS-2017-067, Response to Request for Additional Information Regarding License Amendment Request for TSTF-448, Revision 3, Control Room Habitability, License Amendment Request No. 2015-03, Supplement 22017-10-16016 October 2017 Response to Request for Additional Information Regarding License Amendment Request for TSTF-448, Revision 3, Control Room Habitability, License Amendment Request No. 2015-03, Supplement 2 ONS-2017-069, (ONS) - Additional Information Regarding License Amendment Request for Temporary Completion Time for One Keowee Hydro Unit Inoperable for Generator Stator Replacement2017-10-13013 October 2017 (ONS) - Additional Information Regarding License Amendment Request for Temporary Completion Time for One Keowee Hydro Unit Inoperable for Generator Stator Replacement ONS-2017-070, Transmittal of Oconee, Units 1, 2, and 3, Emergency Plan Implementing Procedures Manual Volume 2, Revision 2017-0022017-10-0505 October 2017 Transmittal of Oconee, Units 1, 2, and 3, Emergency Plan Implementing Procedures Manual Volume 2, Revision 2017-002 ONS-2017-072, Fifth Ten Year Lnservice Inspection Interval, Relief Request No. 17-0N-001; Alternative to Extend the Code Case N-770, Inspection Item B Examination Frequency2017-10-0303 October 2017 Fifth Ten Year Lnservice Inspection Interval, Relief Request No. 17-0N-001; Alternative to Extend the Code Case N-770, Inspection Item B Examination Frequency ONS-2017-066, Registration for Use of General License Spent Fuel Cask Numbers 147 and 1482017-09-20020 September 2017 Registration for Use of General License Spent Fuel Cask Numbers 147 and 148 ONS-2017-061, Revised Response to NRC Regulatory Issue Summary 2017-03, Preparation and Scheduling of Operator License Examinations2017-08-10010 August 2017 Revised Response to NRC Regulatory Issue Summary 2017-03, Preparation and Scheduling of Operator License Examinations ONS-2017-060, Registration for Use of General License Spent Fuel Cask Numbers 145 and 1462017-08-0303 August 2017 Registration for Use of General License Spent Fuel Cask Numbers 145 and 146 ONS-2017-059, Transmittal of Response to March 12, 2012 Request for Information, Recommendation 2.1 Flooding, Required Response 3, Flooding Focused Evaluation Summary2017-07-31031 July 2017 Transmittal of Response to March 12, 2012 Request for Information, Recommendation 2.1 Flooding, Required Response 3, Flooding Focused Evaluation Summary ONS-2017-050, Technical Specification Bases Change 2017-042017-07-21021 July 2017 Technical Specification Bases Change 2017-04 ONS-2017-052, Technical Specification Bases Change 2017-032017-07-20020 July 2017 Technical Specification Bases Change 2017-03 ONS-2017-043, Technical Specification Bases Change 2017-012017-07-20020 July 2017 Technical Specification Bases Change 2017-01 ONS-2017-047, Registration for Use of General License Spent Fuel Cask Numbers 142, 143, and 1442017-06-27027 June 2017 Registration for Use of General License Spent Fuel Cask Numbers 142, 143, and 144 ONS-2017-042, Additional Information Regarding License Amendment Request for Temporary Completion Time for One Keowee Hydro Unit Inoperable for Generator Stator Replacement, License Amendment Request No. 2015-08, Supplement 22017-06-0101 June 2017 Additional Information Regarding License Amendment Request for Temporary Completion Time for One Keowee Hydro Unit Inoperable for Generator Stator Replacement, License Amendment Request No. 2015-08, Supplement 2 ONS-2017-040, Transmittal of Emergency Plan Implementing Procedures Manual Volume 1, Revision 2017-0032017-05-22022 May 2017 Transmittal of Emergency Plan Implementing Procedures Manual Volume 1, Revision 2017-003 ONS-2017-037, 2016 Annual Radiological Environmental Operating Report2017-05-15015 May 2017 2016 Annual Radiological Environmental Operating Report ONS-2017-026, Submittal of Ufsar/Selected Licensee Commitment Change2017-04-11011 April 2017 Submittal of Ufsar/Selected Licensee Commitment Change ONS-2017-024, Revision 028 to ERTG-001, Emergency Response Organization and Emergency Services Training Program2017-03-16016 March 2017 Revision 028 to ERTG-001, Emergency Response Organization and Emergency Services Training Program ONS-2017-001, Submittal of Emergency Plan Program Procedure HP/O/B/1009/001 Rev 0452017-03-0202 March 2017 Submittal of Emergency Plan Program Procedure HP/O/B/1009/001 Rev 045 ONS-2017-017, Emergency Plan Implementing Procedures Manual Volume 1, Revision 2017-0012017-03-0202 March 2017 Emergency Plan Implementing Procedures Manual Volume 1, Revision 2017-001 ONS-2017-018, Emergency Plan Implementing Procedures Manual Volume 2, Revision 2017-0012017-03-0202 March 2017 Emergency Plan Implementing Procedures Manual Volume 2, Revision 2017-001 ONS-2017-015, End of Cycle 29 (1 EOC29) Refueling Outage Lnservice Inspection (ISI) and Steam Generator Lnservice Inspection (SG-ISI) Report, Fifth 10-Year ISI Interval2017-02-24024 February 2017 End of Cycle 29 (1 EOC29) Refueling Outage Lnservice Inspection (ISI) and Steam Generator Lnservice Inspection (SG-ISI) Report, Fifth 10-Year ISI Interval ONS-2017-019, Technical Specification Bases Change 2015-092017-02-23023 February 2017 Technical Specification Bases Change 2015-09 ONS-2017-011, Emergency Plan Revised Evaluation2017-02-0202 February 2017 Emergency Plan Revised Evaluation ONS-2017-009, Units 1, 2 & 3 - Notification of Compliance with Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events.2017-02-0101 February 2017 Units 1, 2 & 3 - Notification of Compliance with Order EA-12-049, Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events. ONS-2017-004, Submittal of Core Operating Limits Report2017-01-12012 January 2017 Submittal of Core Operating Limits Report ONS-2017-006, Emergency Plan Revision 2016-0032017-01-12012 January 2017 Emergency Plan Revision 2016-003 ONS-2016-097, Emergency Plan/Emergency Plan Implementing Procedures Manual, Revised 10CFR 50.54(q) Evaluation(S)2016-11-17017 November 2016 Emergency Plan/Emergency Plan Implementing Procedures Manual, Revised 10CFR 50.54(q) Evaluation(S) ONS-2016-098, Special Report Per Technical Specification 5.6.6, Inoperability of Post Accident Monitoring Containment High Range Radiation Monitors2016-11-14014 November 2016 Special Report Per Technical Specification 5.6.6, Inoperability of Post Accident Monitoring Containment High Range Radiation Monitors ONS-2016-096, Revised Response to NRC Regulatory Issue Summary 2015-05, Preparation and Scheduling of Operator Licensing Examinations2016-11-10010 November 2016 Revised Response to NRC Regulatory Issue Summary 2015-05, Preparation and Scheduling of Operator Licensing Examinations 2018-05-15
[Table view] Category:Response to Request for Additional Information (RAI)
MONTHYEARRA-23-0275, Subsequent License Renewal Application, Appendix E, Responses to Requests for Additional Information (Rai), and Request for Confirmation of Information (RCI)2023-10-12012 October 2023 Subsequent License Renewal Application, Appendix E, Responses to Requests for Additional Information (Rai), and Request for Confirmation of Information (RCI) RA-23-0136, Duke Energy Response to Request for Additional Information Regarding Proposed Alternative for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1)2023-07-20020 July 2023 Duke Energy Response to Request for Additional Information Regarding Proposed Alternative for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1) RA-23-0154, Duke Energy - Response to Request for Additional Information Regarding Proposed Alternative for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1)2023-07-20020 July 2023 Duke Energy - Response to Request for Additional Information Regarding Proposed Alternative for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1) RA-23-0142, Mcguire, Units 1 and 2, Oconee, Units 1, 2, and 3, H. B. Robinson, Unit 2, Response to Request for Additional Information Regarding the License Amendment Request to Revise Restrictive Technical Specification Surveillance Require2023-07-0707 July 2023 Mcguire, Units 1 and 2, Oconee, Units 1, 2, and 3, H. B. Robinson, Unit 2, Response to Request for Additional Information Regarding the License Amendment Request to Revise Restrictive Technical Specification Surveillance Require RA-23-0146, Subsequent License Renewal Application, Appendix E, Responses to Requests for Additional Information (Rai), and Request for Confirmation of Information (RCI)2023-06-20020 June 2023 Subsequent License Renewal Application, Appendix E, Responses to Requests for Additional Information (Rai), and Request for Confirmation of Information (RCI) RA-23-0104, Response to Request for Additional Information (RAI) Regarding Oconee Unit 3, Refuel 31 (O3R31) Steam Generator Tube Inspection Report2023-04-26026 April 2023 Response to Request for Additional Information (RAI) Regarding Oconee Unit 3, Refuel 31 (O3R31) Steam Generator Tube Inspection Report RA-23-0051, Response to Request for Additional Information (RAI) Regarding Proposed Alternative to Use American Society of Mechanical Engineers Code Case N-752, Risk-Informed Categorization and Treatment for Repair/Replacement Activities2023-03-0909 March 2023 Response to Request for Additional Information (RAI) Regarding Proposed Alternative to Use American Society of Mechanical Engineers Code Case N-752, Risk-Informed Categorization and Treatment for Repair/Replacement Activities RA-22-0270, Response to Request for Additional Information Regarding License Amendment Request to Address Technical Specifications Mode Change Limitations2022-10-0707 October 2022 Response to Request for Additional Information Regarding License Amendment Request to Address Technical Specifications Mode Change Limitations RA-22-0192, Subsequent License Renewal Application Response to ONS SLRA Second Round RAI B2.1.7-4a2022-09-0202 September 2022 Subsequent License Renewal Application Response to ONS SLRA Second Round RAI B2.1.7-4a RA-22-0160, Subsequent License Renewal Application: Responses to ONS SLRA - Second Round RAIs - Trp 76 (Irradiation Structural) - FE 3.5.2.2.2.62022-07-25025 July 2022 Subsequent License Renewal Application: Responses to ONS SLRA - Second Round RAIs - Trp 76 (Irradiation Structural) - FE 3.5.2.2.2.6 RA-22-0193, Subsequent License Renewal Application Response to ONS SLRA Second Round RAI B2.1.7-4b2022-07-0808 July 2022 Subsequent License Renewal Application Response to ONS SLRA Second Round RAI B2.1.7-4b RA-22-0158, Subsequent License Renewal Application - Response to ONS SLRA Second Round RAI B2.1.9-2a2022-06-0808 June 2022 Subsequent License Renewal Application - Response to ONS SLRA Second Round RAI B2.1.9-2a RA-22-0159, Subsequent License Renewal Application Response to ONS SLRA Request for Additional Information (RAI) 3.1.2-12022-05-27027 May 2022 Subsequent License Renewal Application Response to ONS SLRA Request for Additional Information (RAI) 3.1.2-1 RA-22-0137, Subsequent License Renewal Application Response to ONS SLRA Second Round RAI 4.6.1-1a2022-05-20020 May 2022 Subsequent License Renewal Application Response to ONS SLRA Second Round RAI 4.6.1-1a RA-22-0147, Duke Energy Carolinas, LLC, and Duke Energy Progress, LLC, Response to Request for Additional Information (RAI) Regarding License Amendment Request for Relocating the Duke Energy Emergency Operations Facility2022-05-13013 May 2022 Duke Energy Carolinas, LLC, and Duke Energy Progress, LLC, Response to Request for Additional Information (RAI) Regarding License Amendment Request for Relocating the Duke Energy Emergency Operations Facility RA-22-0145, Subsequent License Renewal Application Response to NRC Requests for Confirmation of Information - RAI 3.5.2.2.2.6-L2022-05-11011 May 2022 Subsequent License Renewal Application Response to NRC Requests for Confirmation of Information - RAI 3.5.2.2.2.6-L RA-22-0124, Subsequent License Renewal Application Responses to NRC Request for Additional Information Set 42022-04-22022 April 2022 Subsequent License Renewal Application Responses to NRC Request for Additional Information Set 4 RA-22-0129, Subsequent License Renewal Application, Response to ONS SLRA 2nd Round RAI B4.1-32022-04-20020 April 2022 Subsequent License Renewal Application, Response to ONS SLRA 2nd Round RAI B4.1-3 RA-22-0089, Response to Request for Additional Information Regarding Application to Revise Technical Specification 3.7.7, Low Pressure Service Water System, to Extend the Completion Time for One Required Inoperable LPSW2022-04-14014 April 2022 Response to Request for Additional Information Regarding Application to Revise Technical Specification 3.7.7, Low Pressure Service Water System, to Extend the Completion Time for One Required Inoperable LPSW RA-22-0111, Subsequent License Renewal Application, Follow-up Request for Additional Information Set 2 and 3 Updates2022-03-31031 March 2022 Subsequent License Renewal Application, Follow-up Request for Additional Information Set 2 and 3 Updates RA-22-0105, Subsequent License Renewal Application - Responses to NRC Requests for Confirmation of Information - Set 42022-03-22022 March 2022 Subsequent License Renewal Application - Responses to NRC Requests for Confirmation of Information - Set 4 ML22075A2032022-03-11011 March 2022 Email from Duke to NRC - Follow-Up Items from March 7, 2022 Public Meeting ML22074A0022022-03-11011 March 2022 Email from Duke to NRC - Follow-up Item from March 7, 2022 Public Meeting - SSW Tendon AMP RA-22-0040, Subsequent License Renewal Application: Responses to NRC Request for Additional Information Set 32022-02-21021 February 2022 Subsequent License Renewal Application: Responses to NRC Request for Additional Information Set 3 RA-22-0023, Subsequent License Renewal Application - Response to NRC Requests for Confirmation of Information - Set 32022-01-21021 January 2022 Subsequent License Renewal Application - Response to NRC Requests for Confirmation of Information - Set 3 RA-22-0025, Supplemental Information for Relief Request to Utilize an Alternative Acceptance Criteria for Code Case, PWR Class 1 Primary Piping Alloy 600 Full Penetration Branch Connection Weld Metal Buildup for Material2022-01-20020 January 2022 Supplemental Information for Relief Request to Utilize an Alternative Acceptance Criteria for Code Case, PWR Class 1 Primary Piping Alloy 600 Full Penetration Branch Connection Weld Metal Buildup for Material RA-21-0332, Subsequent License Renewal Application Responses to NRC Request for Additional Information Set 1 and Second Round Request for Additional Information B2.1.27-1a2022-01-0707 January 2022 Subsequent License Renewal Application Responses to NRC Request for Additional Information Set 1 and Second Round Request for Additional Information B2.1.27-1a ML22019A1182022-01-0707 January 2022 Enclosures 1,2 & 3: Oconee Nuclear Station, Units 1, 2 & 3, Subsequent License Renewal Application, Appendix E, Environmental Report - Index of Duke Energy'S Responses, Responses to NRC Requests for Confirmation of Information and NRC Reque ML22019A1232022-01-0707 January 2022 Subsequent License Renewal Application, Appendix E, Responses to Requests for Additional Information and Request for Confirmation of Information ML22019A1202022-01-0707 January 2022 Appendix K ML22019A1192022-01-0707 January 2022 Appendix 1-A - Oconee Nuclear Station 122.21(r)(2)-(13) Submittal Requirement Checklist ML22019A1242022-01-0707 January 2022 Attachment 1: Oconee Nuclear Station, Units 1, 2 & 3, Subsequent License Renewal Application, Appendix E - HDR, Inc., 2020 Clean Water Act Documents ML22019A1212022-01-0707 January 2022 Appendix 13-B Peer Reviewer Communication Log ML22019A1222022-01-0707 January 2022 Calculation of Permeability by the Falling Head Method RA-22-0002, Appendix 10-B - Pump and Pipe Selection Calculations for a Hypothetical Cooling Tower Retrofit at Oconee Nuclear Station2022-01-0707 January 2022 Appendix 10-B - Pump and Pipe Selection Calculations for a Hypothetical Cooling Tower Retrofit at Oconee Nuclear Station ML22007A0152022-01-0707 January 2022 Subsequent License Renewal Application, Appendix E Responses to Requests for Additional Information (Rai), and Request for Confirmation of Information RA-21-0325, Response to NRC Requests for Confirmation of Information - Set 22021-12-17017 December 2021 Response to NRC Requests for Confirmation of Information - Set 2 RA-21-0307, Subsequent License Renewal Application Response to NRC Requests for Confirmation of Information - Set 12021-12-0202 December 2021 Subsequent License Renewal Application Response to NRC Requests for Confirmation of Information - Set 1 RA-21-0269, Response to Request for Additional Information Regarding Alternative Request to Utilize American Society of Mechanical Engineers (ASME) Code Case OMN-282021-11-0909 November 2021 Response to Request for Additional Information Regarding Alternative Request to Utilize American Society of Mechanical Engineers (ASME) Code Case OMN-28 RA-21-0270, Response to Second Request for Additional Information (RAI) Regarding Relief Request to Utilize an Alternative Acceptance Criteria for Code Case N-8532021-10-28028 October 2021 Response to Second Request for Additional Information (RAI) Regarding Relief Request to Utilize an Alternative Acceptance Criteria for Code Case N-853 RA-21-0242, Response to Request for Additional Information, Regarding Relief Request to Utilize an Alternative Acceptance Criteria for Code Case N-853, PWR Class 1 Primary Piping Alloy 600 Full Penetration Branch Connection2021-08-31031 August 2021 Response to Request for Additional Information, Regarding Relief Request to Utilize an Alternative Acceptance Criteria for Code Case N-853, PWR Class 1 Primary Piping Alloy 600 Full Penetration Branch Connection RA-21-0219, Response to Request for Additional Information for Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Intervals2021-08-0505 August 2021 Response to Request for Additional Information for Request for Alternative for Implementation of Extended Reactor Vessel Inservice Inspection Intervals RA-21-0063, 1, 2; Catawba Nuclear Station 1, 2; H. B. Robinson Steam Electric Plant 2; Mcgguire Nuclear Station 1, 2; Oconee Nuclear Station 1, 2, 3; Shearon Harris Nuclear Power Plant 1 - Response to RAI Re Amend for Emergency Plan2021-03-11011 March 2021 1, 2; Catawba Nuclear Station 1, 2; H. B. Robinson Steam Electric Plant 2; Mcgguire Nuclear Station 1, 2; Oconee Nuclear Station 1, 2, 3; Shearon Harris Nuclear Power Plant 1 - Response to RAI Re Amend for Emergency Plan RA-21-0032, Duke Energy - Response to Requests for Additional Info for Request to Use a Provision of Later Edition & Addenda of the ASME Boiler & Pressure Vessel Code, Section XI for Repair/Replacement Activities in Accordance with 10 CFR 50.55a(g)(42021-02-11011 February 2021 Duke Energy - Response to Requests for Additional Info for Request to Use a Provision of Later Edition & Addenda of the ASME Boiler & Pressure Vessel Code, Section XI for Repair/Replacement Activities in Accordance with 10 CFR 50.55a(g)(4)( 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 RA-19-0281, Response to NRC Request for Additional Information for the Fall 2018 Oconee Unit 1 Steam Generator Tube Rupture Inspection Report (RA-19-0093)2019-07-31031 July 2019 Response to NRC Request for Additional Information for the Fall 2018 Oconee Unit 1 Steam Generator Tube Rupture Inspection Report (RA-19-0093) RA-19-0301, Proposed Amendment to Renewed Facility Operating Licenses Regarding Revisions to Final Safety Analysis Report Sections Associated with Oconee Tornado Licensing Basis -Responses to Request for Additional Information2019-07-31031 July 2019 Proposed Amendment to Renewed Facility Operating Licenses Regarding Revisions to Final Safety Analysis Report Sections Associated with Oconee Tornado Licensing Basis -Responses to Request for Additional Information RA-19-0134, Duke Energy Response to NRC Request for Additional Information (RAI) Related to Oconee License Amendment Request 2018-052019-03-0707 March 2019 Duke Energy Response to NRC Request for Additional Information (RAI) Related to Oconee License Amendment Request 2018-05 RA-19-0116, Duke Energy Response to NRC Request for Additional Information (RAI) Related to Oconee License Amendment Request 2017-052019-02-26026 February 2019 Duke Energy Response to NRC Request for Additional Information (RAI) Related to Oconee License Amendment Request 2017-05 RA-19-0026, Response to Request for Additional Information (RAI) Regarding Proposed Alternative to the Depth Sizing Qualification Requirement of Appendix Viii, Supplements 2 and 10 (18-GO-001)2019-02-11011 February 2019 Response to Request for Additional Information (RAI) Regarding Proposed Alternative to the Depth Sizing Qualification Requirement of Appendix Viii, Supplements 2 and 10 (18-GO-001) 2023-07-07
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ENERGY ONS-2016-028 March 18, 2016 Attn: Document Control Desk U. S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852 Duke Energy Carolinas, LLC (Duke Energy) Oconee Nuclear Station, Units 1, 2, and 3 Docket Numbers 50-269, 50-270, and 50-287 10 CFR 50.90 SCOTTL. BATSON Vice President Oconee Nuclear Station Duke Energy ON01VP I 7800 Rochester Hwy Seneca, SC 29672 o: 864-873-3274 f: 864-873-4208 Scott.Batson@duke-energy.com 10 CFR 50 Appendix E Renewed Operating License Nos. DPR-38, DPR-47, and DPR-55
Subject:
Response to Request for Additional Information (RAI) Regarding the License Amendment Request (LAR) to Change the Oconee Nuclear Station (ONS) Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6 License Amendment Request No. 2015-04 By letter dated June 23, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 15183A060), Duke Energy requested approval of a proposed change to the Emergency Action Levels (EALs) used at Oconee Nuclear Station (ONS). Duke Energy proposes to revise their current ONS EAL scheme to one based upon Nuclear Energy Institute (NEI) document NEI 99-01, "Development of Emergency Action Levels for Non-Passive Reactors," Revision 6 (ADAMS Accession No. ML 12326A805).
The NRC staff reviewed the request and determined that additional information is needed to complete their review. A letter requesting additional information was sent December 15, 2015 (ADAMS Accession No. ML 15345A398).
Duke Energy responded to this request by letter dated February 4, 2016 (ADAMS Accession No. ML 16041A237).
The NRC issued an additional RAI by letter dated February 26, 2016 (ADAMS Accession No. ML ML 16056A583).
The enclosure provides the ONS response to this most recent RAI. ONS anticipates that the LAR, as approved, will be effective upon issuance and requests implementation by March 31, 2017, due to the need for operator training.
This request supersedes the previous ONS request for a 180-day implementation period. This letter makes no new commitments or changes to existing commitments.
Should you have any questions regarding this request, please contact Chris Wasik, Regulatory Affairs Manager, at (864) 873-5789.
U.S. Nuclear Regulatory Commission March 18, 2016 Page 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on the 18th day of March, 2016. Sincerely, dY?td:r-Scott L. Batson Vice President Oconee Nuclear Station
Enclosure:
Response to Request for Additional Information U.S. Nuclear Regulatory Commission March 18, 2016 Page 3 cc w/
Enclosures:
Ms. Catherine Haney, Regional Administrator U.S. Nuclear Regulatory Commission
-Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, GA 30303-1257 Mr. James.
Senior Project Manager (by electronic mail only) Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 0-8 G9A Rockville, MD 20852 Mr. Jeffrey Whited, Project Manager (by electronic mail only) Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 0-8 B 1 A Rockville, MD 20852 Mr. Eddy Crowe NRC Senior Resident Inspector Oconee Nuclear Site Ms. Susan Jenkins, Manager Radioactive
& Infectious Waste Management Division of Waste Management South Carolina Department of Health and Environmental Control 2600 Bull St. Columbia, SC 29201 U.S. Nuclear Regulatory Commission March 18, 2016 Page4 cc w/o
Enclosures:
Mr. Scott Krein, Director Oconee County Emergency Preparedness 415 South Pine Street Walhalla, SC 29691 Ms. Denise Kwiatek, Deputy Director Pickens County Emergency Preparedness 1509 Walhalla Highway Pickens, SC 29671 Mr. Kim Stenson, Director South Carolina Emergency Management Division 2779 Fish Hatchery Road West Columbia, SC 29172 U.S. Nuclear Regulatory Commission March 18, 2016 Page 5 bee w/enclosures:
T.D.Ray M. C. Nolan C. T. Dunton T. L. Patterson C. J. Wasik P. M. Street T. R. Byrne -GO C. A. Fletcher -CNS J. N. Robertson
-MNS L. J. Grzeck -BNP J. R. Caves -HNP M. S. Connelly -RNP NSRB, EC05N ELL, EC2ZF File -T.S. Working ONS Document Management ENCLOSURE ONS-2016-028 Enclosure RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST NO. 2015-04 OCONEE NUCLEAR POWER STATION, UNIT 1, 2, AND 3 DOCKET NOS 50-269, 50-270, and 50-287 RENEWED LICENSE NOS. DPR-38, DPR-47, and DPR-55 2 Pages Follow RAl-24 ONS-2016-028 Enclosure Please explain, in greater detail, the response to RAl-05, submitted by letter dated February 4, 2016. In particular, please explain why the values and thresholds developed for EALs RU1, RA 1, RS 1, and RG 1, in accordance with NEI 99-01, Revision 6, are about a factor of 7 different than those developed for your present EAL scheme which used the NUMARC/NESP-007 EAL scheme development guidance.
The assumptions for the NUMARC and NEI guidance are essentially the same (except using different dose calculation method(s)), therefore this less conservative value(s) for the EALs presently in place requires more information to allow the NRC staff to better understand not only what is proposed but also why it is so different than what is currently approved, and if the currently approved EALs have been under-conservative since approval.
Duke Energy Response In NEI 99-01 Rev. 6, the Developer Notes for AA 1, AS1, and AG1 it is stated that acceptable sources of information for assumed meteorological data, atmospheric dispersion factors, and isotopic mix "include, but are not limited to, the RETS!ODCM and values used in the site's emergency dose assessment methodology." Additionally, the Developer Notes for AU1 state that as appropriate, the Radiological Effluent Technical Specifications (RETS) or Offsite Dose Calculation Manual (ODCM) methodology should be used for establishing the monitor thresholds.
As such, in the development of the effluent monitor threshold value for RU1 .1, Oconee's ODCM methodology was used. In regards to RA1 .1, RS1 .1 and RG1 .1, Oconee's emergency dose assessment software, Unified Rascal Interface (URI), was used to develop the effluent monitor threshold values. The currently approved EALs were developed in accordance with the NRG-approved guidance in NUMARC/NESP-007, Rev. 2, and they are conservative.
Key differences in the calculation of the NEI 99-01 Rev. 6 EAL radiation monitor threshold values from the current NUMARC/NESP-007 Rev. 2 values are summarized in Table 1 below. Table 1 INPUT Proposed (NEI 99-01 Rev.6) Current (NUMARC/NESP-007 Rev.2) 1 Source Term URI/RASCAL values as ODCM values described in NUREG-1940 2 Dose ICRP-60 values in URI/RASCAL Reg. Guide 1.109 values Conversion URI/RASCAL dispersion methodology with model-derived ODCM methodology using highest 3* Dispersion XIQ to the affected sector for the annual average X/Q of 16 directional Model entire release duration using sectors. median wind speed and stability class. *For RU1 .1 difference is due to 1 and 2 only.
ONS-2016-028 Enclosure Given the differences noted in Table 1 above, a change of about one order of magnitude (10 1) in the EAL effluent monitor threshold values is reasonable and well below the range (10 2 to 10 4) of the most likely dose assessment uncertainty factors discussed in NUREG/CR-5247.
For example, basing the X/Q on a single sector for the entire release duration using URI/RASCAL dispersion methodology results in a X/Q value that is significantly larger than an ODCM-based annual average X/Q. As discussed in NEI 99-01, Rev 4, Appendix A, "the sector annual average XIQ value is normalized for the percentage of time that the wind blows into that sector. In an actual event, the wind direction may be into the affected sector for the entire release duration.
Many sites experience typical sector X!Qs that are 10-20 times higher than the calculated annual average for the sector."
ENERGY ONS-2016-028 March 18, 2016 Attn: Document Control Desk U. S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852 Duke Energy Carolinas, LLC (Duke Energy) Oconee Nuclear Station, Units 1, 2, and 3 Docket Numbers 50-269, 50-270, and 50-287 10 CFR 50.90 SCOTTL. BATSON Vice President Oconee Nuclear Station Duke Energy ON01VP I 7800 Rochester Hwy Seneca, SC 29672 o: 864-873-3274 f: 864-873-4208 Scott.Batson@duke-energy.com 10 CFR 50 Appendix E Renewed Operating License Nos. DPR-38, DPR-47, and DPR-55
Subject:
Response to Request for Additional Information (RAI) Regarding the License Amendment Request (LAR) to Change the Oconee Nuclear Station (ONS) Emergency Plan to Upgrade ONS Emergency Action Levels Based on NEI 99-01, Revision 6 License Amendment Request No. 2015-04 By letter dated June 23, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML 15183A060), Duke Energy requested approval of a proposed change to the Emergency Action Levels (EALs) used at Oconee Nuclear Station (ONS). Duke Energy proposes to revise their current ONS EAL scheme to one based upon Nuclear Energy Institute (NEI) document NEI 99-01, "Development of Emergency Action Levels for Non-Passive Reactors," Revision 6 (ADAMS Accession No. ML 12326A805).
The NRC staff reviewed the request and determined that additional information is needed to complete their review. A letter requesting additional information was sent December 15, 2015 (ADAMS Accession No. ML 15345A398).
Duke Energy responded to this request by letter dated February 4, 2016 (ADAMS Accession No. ML 16041A237).
The NRC issued an additional RAI by letter dated February 26, 2016 (ADAMS Accession No. ML ML 16056A583).
The enclosure provides the ONS response to this most recent RAI. ONS anticipates that the LAR, as approved, will be effective upon issuance and requests implementation by March 31, 2017, due to the need for operator training.
This request supersedes the previous ONS request for a 180-day implementation period. This letter makes no new commitments or changes to existing commitments.
Should you have any questions regarding this request, please contact Chris Wasik, Regulatory Affairs Manager, at (864) 873-5789.
U.S. Nuclear Regulatory Commission March 18, 2016 Page 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on the 18th day of March, 2016. Sincerely, dY?td:r-Scott L. Batson Vice President Oconee Nuclear Station
Enclosure:
Response to Request for Additional Information U.S. Nuclear Regulatory Commission March 18, 2016 Page 3 cc w/
Enclosures:
Ms. Catherine Haney, Regional Administrator U.S. Nuclear Regulatory Commission
-Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, GA 30303-1257 Mr. James.
Senior Project Manager (by electronic mail only) Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 0-8 G9A Rockville, MD 20852 Mr. Jeffrey Whited, Project Manager (by electronic mail only) Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop 0-8 B 1 A Rockville, MD 20852 Mr. Eddy Crowe NRC Senior Resident Inspector Oconee Nuclear Site Ms. Susan Jenkins, Manager Radioactive
& Infectious Waste Management Division of Waste Management South Carolina Department of Health and Environmental Control 2600 Bull St. Columbia, SC 29201 U.S. Nuclear Regulatory Commission March 18, 2016 Page4 cc w/o
Enclosures:
Mr. Scott Krein, Director Oconee County Emergency Preparedness 415 South Pine Street Walhalla, SC 29691 Ms. Denise Kwiatek, Deputy Director Pickens County Emergency Preparedness 1509 Walhalla Highway Pickens, SC 29671 Mr. Kim Stenson, Director South Carolina Emergency Management Division 2779 Fish Hatchery Road West Columbia, SC 29172 U.S. Nuclear Regulatory Commission March 18, 2016 Page 5 bee w/enclosures:
T.D.Ray M. C. Nolan C. T. Dunton T. L. Patterson C. J. Wasik P. M. Street T. R. Byrne -GO C. A. Fletcher -CNS J. N. Robertson
-MNS L. J. Grzeck -BNP J. R. Caves -HNP M. S. Connelly -RNP NSRB, EC05N ELL, EC2ZF File -T.S. Working ONS Document Management ENCLOSURE ONS-2016-028 Enclosure RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST NO. 2015-04 OCONEE NUCLEAR POWER STATION, UNIT 1, 2, AND 3 DOCKET NOS 50-269, 50-270, and 50-287 RENEWED LICENSE NOS. DPR-38, DPR-47, and DPR-55 2 Pages Follow RAl-24 ONS-2016-028 Enclosure Please explain, in greater detail, the response to RAl-05, submitted by letter dated February 4, 2016. In particular, please explain why the values and thresholds developed for EALs RU1, RA 1, RS 1, and RG 1, in accordance with NEI 99-01, Revision 6, are about a factor of 7 different than those developed for your present EAL scheme which used the NUMARC/NESP-007 EAL scheme development guidance.
The assumptions for the NUMARC and NEI guidance are essentially the same (except using different dose calculation method(s)), therefore this less conservative value(s) for the EALs presently in place requires more information to allow the NRC staff to better understand not only what is proposed but also why it is so different than what is currently approved, and if the currently approved EALs have been under-conservative since approval.
Duke Energy Response In NEI 99-01 Rev. 6, the Developer Notes for AA 1, AS1, and AG1 it is stated that acceptable sources of information for assumed meteorological data, atmospheric dispersion factors, and isotopic mix "include, but are not limited to, the RETS!ODCM and values used in the site's emergency dose assessment methodology." Additionally, the Developer Notes for AU1 state that as appropriate, the Radiological Effluent Technical Specifications (RETS) or Offsite Dose Calculation Manual (ODCM) methodology should be used for establishing the monitor thresholds.
As such, in the development of the effluent monitor threshold value for RU1 .1, Oconee's ODCM methodology was used. In regards to RA1 .1, RS1 .1 and RG1 .1, Oconee's emergency dose assessment software, Unified Rascal Interface (URI), was used to develop the effluent monitor threshold values. The currently approved EALs were developed in accordance with the NRG-approved guidance in NUMARC/NESP-007, Rev. 2, and they are conservative.
Key differences in the calculation of the NEI 99-01 Rev. 6 EAL radiation monitor threshold values from the current NUMARC/NESP-007 Rev. 2 values are summarized in Table 1 below. Table 1 INPUT Proposed (NEI 99-01 Rev.6) Current (NUMARC/NESP-007 Rev.2) 1 Source Term URI/RASCAL values as ODCM values described in NUREG-1940 2 Dose ICRP-60 values in URI/RASCAL Reg. Guide 1.109 values Conversion URI/RASCAL dispersion methodology with model-derived ODCM methodology using highest 3* Dispersion XIQ to the affected sector for the annual average X/Q of 16 directional Model entire release duration using sectors. median wind speed and stability class. *For RU1 .1 difference is due to 1 and 2 only.
ONS-2016-028 Enclosure Given the differences noted in Table 1 above, a change of about one order of magnitude (10 1) in the EAL effluent monitor threshold values is reasonable and well below the range (10 2 to 10 4) of the most likely dose assessment uncertainty factors discussed in NUREG/CR-5247.
For example, basing the X/Q on a single sector for the entire release duration using URI/RASCAL dispersion methodology results in a X/Q value that is significantly larger than an ODCM-based annual average X/Q. As discussed in NEI 99-01, Rev 4, Appendix A, "the sector annual average XIQ value is normalized for the percentage of time that the wind blows into that sector. In an actual event, the wind direction may be into the affected sector for the entire release duration.
Many sites experience typical sector X!Qs that are 10-20 times higher than the calculated annual average for the sector."