Letter Sequence RAI |
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EPID:L-2020-LLA-0004, Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02) (Open) |
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MONTHYEARCNL-19-066, Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02)2020-01-14014 January 2020 Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02) Project stage: Request CNL-20-026, Supplement to Application to Revise Sequoyah Nuclear Plant Units 1 and 2 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02)2020-02-18018 February 2020 Supplement to Application to Revise Sequoyah Nuclear Plant Units 1 and 2 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02) Project stage: Supplement ML20054B5532020-02-20020 February 2020 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Acceptance of License Amendment Request to Modify the UFSAR Based on a New Hydrologic Analysis Project stage: Acceptance Review ML20106F1042020-04-14014 April 2020 Request for Additional Information Regarding the Hydrologic Analysis LAR Project stage: RAI CNL-20-032, Response to Request for Additional Information (TS-19-02) Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis2020-05-14014 May 2020 Response to Request for Additional Information (TS-19-02) Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis Project stage: Response to RAI ML20141L7672020-05-28028 May 2020 Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML20189A2112020-07-0101 July 2020 Request for Additional Information Regarding Hydrologic UFSAR Update Project stage: RAI ML20203M0572020-07-16016 July 2020 Updated TVA Non-Proprietary Slides for Open Session of July 16, 2020, Partially Closed Public Meeting to Discuss Sequoyah License Amendment Request Project stage: Meeting ML20196L7922020-07-16016 July 2020 Corrected TVA Non-Proprietary Slides for Open Session of July 16, 2020, Partially Closed Public Meeting to Discuss Sequoyah License Amendment Request Project stage: Meeting ML20196L6892020-07-16016 July 2020 TVA Non-Proprietary Slides for Open Session of July 16, 2020, Partially Closed Public Meeting to Discuss Sequoyah License Amendment Request Project stage: Meeting ML20203M2292020-08-11011 August 2020 July 16, 2020, Summary of Partially Closed Meeting with Tennessee Valley Authority to Discuss Responses to Requests for Additional Information Regarding Updated Final Safety Analysis Report Hydrologic Analysis License Amendment Request Project stage: RAI CNL-20-057, Tennessee Valley Authority - Application to Revise Sequoyah Nuclear Plant Units 1 & 2 Updated FSAR Changes to Hydrologic Analysis - Partial Response to Additional Request for Additional Information (TS-19-02)2020-08-12012 August 2020 Tennessee Valley Authority - Application to Revise Sequoyah Nuclear Plant Units 1 & 2 Updated FSAR Changes to Hydrologic Analysis - Partial Response to Additional Request for Additional Information (TS-19-02) Project stage: Request ML20261H4162020-09-0202 September 2020 NRR E-mail Capture - Draft Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, Request to Revise UFSAR Hydrologic Analysis Project stage: Draft RAI ML20261H4182020-09-14014 September 2020 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Audit Plan and Setup of Online Reference Portal Project stage: Other ML20261H4172020-09-14014 September 2020 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Request for Additional Information Regarding Hydrologic UFSAR Update Project stage: RAI ML20293A0802020-10-28028 October 2020 Summary of October 13, 2020, Closed Meeting with TVA on Responses to Requests for Additional Information Updated Final Safety Analysis Report Hydrologic Analysis License Amendment Request Project stage: RAI ML20316A0182020-11-10010 November 2020 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Audit Plan and Setup of Online Reference Portal Project stage: Other CNL-20-082, Partial Response to Request for Additional Information Regarding Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis (TS-19-02)2020-11-10010 November 2020 Partial Response to Request for Additional Information Regarding Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis (TS-19-02) Project stage: Response to RAI ML20343A1182021-01-12012 January 2021 Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML21068A4082021-03-0909 March 2021 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Supplement 2 to Audit Plan and Setup of Online Reference Portal Project stage: Other CNL-21-024, Partial Response to Additional Request for Information Re Application to Revise Updated Final Safety Analysis Report Re Changes to Hydrologic Analysis (TS-19-02)2021-06-15015 June 2021 Partial Response to Additional Request for Information Re Application to Revise Updated Final Safety Analysis Report Re Changes to Hydrologic Analysis (TS-19-02) Project stage: Request ML21239A1152021-08-13013 August 2021 Partial Response to Additional Request for Additional Information, (Question 2) Regarding Application to Revise Sequoyah Nuclear Plant, Units 1 and 2 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis - Correction Project stage: Request CNL-21-095, Submittal of Application to Revise Sequoyah Nuclear Plant, Units 1 and 2, 10 CFR 50.90 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis - Software Dedication Report 16-01 - Update .2021-12-21021 December 2021 Submittal of Application to Revise Sequoyah Nuclear Plant, Units 1 and 2, 10 CFR 50.90 Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis - Software Dedication Report 16-01 - Update . Project stage: Request CNL-23-012, Revision to the Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02)2023-04-11011 April 2023 Revision to the Application to Revise Updated Final Safety Analysis Report Regarding Changes to Hydrologic Analysis, (TS-19-02) Project stage: Request 2020-07-16
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Category:E-Mail
MONTHYEARML24032A0202024-01-31031 January 2024 NPDES Biocide/Corrosion Treatment Plan Annual Report, Cy 2023 ML23319A1662023-11-0202 November 2023 NRR E-mail Capture - Acceptance Review Results for Browns Ferry Nuclear Plant, Sequoyah Nuclear Plant, and Watts Bar Nuclear Plant, Exemption Request Related to 10 CFR 37.11(c)(2) ML23275A0272023-09-29029 September 2023 Submittal of Discharge Monitoring Report (DMR) Quality Assurance Study 43 Final Report 2023 ML23236A2562023-08-24024 August 2023 NRR E-mail Capture - Acceptance Review Results for the Sequoyah and Watts Bar License Amendment Request to Adopt TSTF-567 (L-2023-LLA-0106) ML23165A2862023-06-14014 June 2023 Tennessee Multi-Sector Permit (Tmsp), 2023 Annual Discharge Monitoring Report for Outfalls SW-1, SW-16, SW-17, SW-18, SW-19, and SW-21 ML23072A0722023-03-10010 March 2023 NRR E-mail Capture - (External_Sender) State Consultation - Sequoyah Nuclear Plant, Units 1 and 2; and Watts Bar Nuclear Plant, Units 1 and 2, License Amendment Request to Revise Technical Specification 3.4.12 (L-2022-LLA-0103) ML23058A1312023-02-27027 February 2023 FW: TVA Intentions on EA-22-129 ML23062A5952023-02-27027 February 2023 Staff follow-up Questions to Tva'S 12/19/2022 Response of the Staff'S Rsi Regarding 08/04/2022 SQN Exemption Request ML23052A0792023-02-21021 February 2023 NRR E-mail Capture - Acceptance Review for Browns Ferry and Sequoyah License Amendment Request to Adopt TSTF-541 ML23046A3552023-02-15015 February 2023 Annual Water Withdrawal Report 2022 ML23019A3442023-01-19019 January 2023 Tennessee Multi-Sector Permit (Tmsp), 2022 Annual Discharge Monitoring Report for Outfalls SW-1, SW-16, and SW-19 ML23013A0382023-01-12012 January 2023 NRR E-mail Capture - (External_Sender) State Consultation for Alabama - Browns Ferry, Units 1, 2 and 3; Sequoyah, Units 1 and 2; and Watts Bar, Units 1 and 2, License Amendment Request to Adopt TSTF-529, Revision 4 (L-2022-LLA-0088) ML23013A0362023-01-12012 January 2023 NRR E-mail Capture - (External_Sender) State Consultation for Alabama - Browns Ferry, Units 1, 2 and 3; Sequoyah, Units 1 and 2; and Watts Bar, Units 1 and 2, License Amendment Request to Adopt TSTF-554-A, Revision 1 (L-2022-LLA-0100) ML23026A0282023-01-12012 January 2023 001 Radiation Safety Baseline Inspection Information Request ML22348A0972022-12-14014 December 2022 NRR E-mail Capture - State Consultation - Browns Ferry, Units 1, 2 and 3; Sequoyah, Units 1 and 2; and Watts Bar, Units 1 and 2, License Amendment Request to Adopt TSTF-529, Revision 4 (L-2022-LLA-0088) ML22348A0442022-12-13013 December 2022 NRR E-mail Capture - State Consultation - Browns Ferry, Units 1, 2 and 3; Sequoyah, Units 1 and 2; and Watts Bar, Units 1 and 2, License Amendment Request to Adopt TSTF-554-A, Revision 1 (L-2022-LLA-0100) ML22343A0692022-12-0808 December 2022 NRR E-mail Capture - Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, License Amendment Request to Revise Technical Specification 3.4.12 (L-2022-LLA-0103) ML22348A0432022-11-28028 November 2022 NRR E-mail Capture - State Consultation - Sequoyah Nuclear Plant, Units 1 and 2, License Amendment Request to Modify the Approved 10 CFR 50.69 Categorization Process (L-2022-LLA-0033) ML22227A0712022-08-15015 August 2022 NRR E-mail Capture - Acceptance Review Results for Sequoyah and Watts Bar License Amendment Request to Revise TS 3.4.12 (EPID L-2022-LLA-0103) - Corrected ML22227A0262022-08-12012 August 2022 NRR E-mail Capture - Acceptance Review Results for Sequoyah and Watts Bar License Amendment Request to Revise TS 3.4.12 ML22227A0272022-08-11011 August 2022 NRR E-mail Capture - Request for Additional Information Related to Alternative Requests RP-11 for Sequoyah Nuclear Plant, Units 1 and 2, and IST-RR-9 for Watts Bar Nuclear Plant, Units 1 and 2 ML22215A2752022-08-0303 August 2022 NRR E-mail Capture - Acceptance Review Results for TVA Fleet License Amendment Request to Adopt TSTF-554 ML22214A1582022-08-0202 August 2022 NRR E-mail Capture - Request for Additional Information for Sequoyah Units 1 and 2 License Amendment Request for Fire and Seismic PRA Modification to 10 CFR 50.69 (L-2022-LLA-0033) ML22196A0732022-07-15015 July 2022 NRR E-mail Capture - (External_Sender) State Notification for Sequoyah Units 1 and 2 Amendment Issuance - TSTF-505 RICT (L-2021-LLA-0145) ML22194A8762022-07-13013 July 2022 NRR E-mail Capture - Acceptance Review Results for TVA Fleet License Amendment Request to Adopt TSTF-529 ML22173A0332022-06-17017 June 2022 NRR E-mail Capture - (External_Sender) State Notification for Sequoyah Units 1 and 2 Amendment Issuance - Reactor Trip System Instrumentation (L-2021-LLA-0200) ML22166A4292022-06-0606 June 2022 NRR E-mail Capture - LAR to Adopt TSTF-577 ML22151A0102022-05-27027 May 2022 NRR E-mail Capture - Revised Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02 ML22146A3322022-05-26026 May 2022 NRR E-mail Capture - Request for Additional Information Related to Sequoyah Nuclear Plant'S LAR to Adopt TSTF-505 ML22151A0092022-05-26026 May 2022 NRR E-mail Capture - Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02 ML22146A3342022-05-25025 May 2022 NRR E-mail Capture - Acceptance Review Results for Browns Ferry Nuclear Plant, Units 1, 2, and 3, Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, Relief Requests (EPID L-2022-LLR-0045 - 0047) ML22137A2692022-05-17017 May 2022 Notice of Termination, TNR192066, Gravel Lot Restoration Project ML22136A0182022-05-16016 May 2022 NRR E-mail Capture - Acceptance Review Results for Sequoyah Nuclear Plant, Units 1 and 2, Alternative Request RP-11 and Watts Bar Nuclear Plant, Units 1 and 2, Alternative Request IST-RR-9 ML22132A1762022-05-12012 May 2022 Tennessee Multi-Sector Permit (Tmsp), 2021 Annual Discharge Monitoring Report for Outfalls SW-2, SW-3, SW-4, SW-6, SW-8, SW-9, and SW-13 ML22144A1002022-05-12012 May 2022 NRR E-mail Capture - Request for Additional Information Related to Tva'S Request to Revised the TVA Plants' Radiological Emergency Plans ML22123A1812022-05-0303 May 2022 NRR E-mail Capture - Acceptance Review Results for Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, License Amendment Request to Adopt TSTF-577 ML22095A0182022-04-0404 April 2022 NRR E-mail Capture - Sequoyah Nuclear Plant - Acceptance of Request for Alternative - Pressure Isolation Valve Leakage ISTC-3630 (L-2022-LLR-0034) ML22125A1422022-03-22022 March 2022 1 and 2 - March 22, 2022 e-mail - Sequoyah TSTF-505 LAR Supplemental Information ML22075A0942022-03-16016 March 2022 NRR E-mail Capture - Acceptance Review for Sequoyah Units 1 and 2 - LAR to Use of Fire and Seismic PRAs to Modify Approved 10 CFR 50.69 Categorization Process ML22046A2742022-02-15015 February 2022 NRR E-mail Capture - Audit Question (Snsb 02) for Sequoyah Units 1 and 2 LAR to Adopt TSTF-505, Revision 2 (L-2021-LLA-0145) ML22047A0552022-02-15015 February 2022 Annual Water Withdrawal Report 2021 ML22038A1882022-02-0404 February 2022 NRR E-mail Capture - Acceptance Review Results for TVA Fleet License Amendment Request to Revise the TVA Radiological Emergency Plan ML22035A0182022-02-0303 February 2022 NRR E-mail Capture - Audit Questions (Eeb follow-up) for Sequoyah Units 1 and 2 LAR to Adopt TSTF-505, Revision 2 (L-2021-LLA-0145) ML22018A0272022-01-18018 January 2022 2022 All RFI Responses - Exercise and Program Inspections - Revl ML21347A9022021-12-13013 December 2021 Discharge Monitoring Report (DMR) Quality Assurance Study 41 Follow-up Report 2021 ML21336A3942021-12-0101 December 2021 NRR E-mail Capture - Audit Questions for Sequoyah Units 1 and 2 - LAR to Adopt TSTF-505, Revision 2 (L-2021-LLA-0145) ML21323A0432021-11-18018 November 2021 NRR E-mail Capture - Acceptance Review for Sequoyah Units 1 and 2 - LAR to Eliminate the High Negative Flux Rate Trip Requirement ML21252A2152021-09-0909 September 2021 NRR E-mail Capture - Sequoyah Nuclear Plant, Unit 2 - Acceptance of Request for Alternative Inspection for Upper Head Injection J-groove Welds (L-2021-LLR-0059) ML21239A0712021-08-27027 August 2021 Acceptance of License Amendment Request to Adopt TSTF-505, Revision 2 ML21237A4952021-08-25025 August 2021 Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2021-04 2024-01-31
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML23307A0832023-11-0808 November 2023 Enclosure - Request for Additional Information HDI-Sequoyah NDE Exemption Request 10-30-2023 ML23307A0822023-11-0808 November 2023 Request for Additional Information August 4, 2022, Exemption Request for Deviating from the Conditions of Certificate of Compliance No. 1032, Amendment No. 3, Related to Sequoyah Nuclear Plant Independent Spent Fuel Storage Installation ML23062A5952023-02-27027 February 2023 Staff follow-up Questions to Tva'S 12/19/2022 Response of the Staff'S Rsi Regarding 08/04/2022 SQN Exemption Request ML23062A5942023-02-27027 February 2023 Enclosure - NRC SQN Exemption Rsi Response Staff Follow Up Questions ML22343A0692022-12-0808 December 2022 NRR E-mail Capture - Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2, License Amendment Request to Revise Technical Specification 3.4.12 (L-2022-LLA-0103) ML22257A0622022-09-14014 September 2022 Requalification Program Inspection - Sequoyah Nuclear Plant ML22255A0842022-09-0909 September 2022 Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2022-04 ML22227A0272022-08-11011 August 2022 NRR E-mail Capture - Request for Additional Information Related to Alternative Requests RP-11 for Sequoyah Nuclear Plant, Units 1 and 2, and IST-RR-9 for Watts Bar Nuclear Plant, Units 1 and 2 ML22214A1582022-08-0202 August 2022 NRR E-mail Capture - Request for Additional Information for Sequoyah Units 1 and 2 License Amendment Request for Fire and Seismic PRA Modification to 10 CFR 50.69 (L-2022-LLA-0033) ML22151A0102022-05-27027 May 2022 NRR E-mail Capture - Revised Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02 ML22151A0092022-05-26026 May 2022 NRR E-mail Capture - Request for Additional Information Re Sequoyah Nuclear Plant Alternative Request RV-02 ML22146A3322022-05-26026 May 2022 NRR E-mail Capture - Request for Additional Information Related to Sequoyah Nuclear Plant'S LAR to Adopt TSTF-505 ML22144A1002022-05-12012 May 2022 NRR E-mail Capture - Request for Additional Information Related to Tva'S Request to Revised the TVA Plants' Radiological Emergency Plans ML21237A4952021-08-25025 August 2021 Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2021-04 ML21160A0352021-06-0303 June 2021 Document Request for Sequoyah Nuclear Plant - Radiation Protection Inspection - Inspection Report 2021-03 ML21095A0482021-04-0505 April 2021 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Request for Additional Information Regarding Request to Transition to Westinghouse Fuel ML21092A0972021-04-0202 April 2021 Notification of Inspection and Request for Information for NRC Problem Identification and Resolution Inspection ML20259A4782020-09-15015 September 2020 Emergency Preparedness Program Inspection Request for Information ML20261H4172020-09-14014 September 2020 NRR E-mail Capture - Sequoyah Nuclear Plant, Units 1 and 2 - Request for Additional Information Regarding Hydrologic UFSAR Update ML20261H4162020-09-0202 September 2020 NRR E-mail Capture - Draft Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, Request to Revise UFSAR Hydrologic Analysis ML20189A2112020-07-0101 July 2020 Request for Additional Information Regarding Hydrologic UFSAR Update ML20106F1042020-04-14014 April 2020 Request for Additional Information Regarding the Hydrologic Analysis LAR ML20161A3902020-04-0909 April 2020 Request for Supporting Information for the Sequoyah SPRA Audit Review - Follow-up to Plant Response Question 5 ML20098D8612020-04-0707 April 2020 Notification of an NRC Fire Protection Team Inspection (FPTI) (NRC Inspection Report 05000327/2020012 and 05000328/2020012) and Request for Information) ML20036E2842020-02-0505 February 2020 20200123 - Sequoyah Radiation Safety Inspection Document Request Letter ML19323D7562019-11-18018 November 2019 Nrc'S Request for Additional Information - Exigent Amendment ML19235A0992019-08-22022 August 2019 Emergency Preparedness Program Inspection Request for Information ML19162A2462019-06-11011 June 2019 RP Inspection Document Request 2019-03 ML19149A6222019-05-29029 May 2019 NRR E-mail Capture - Request for Additional Information - Sequoyah Nuclear Plant, Units 1 and 2, Request for Alternative to 18-ISI-1 EPID: L-2019-LLR-0006 ML19148A7912019-05-28028 May 2019 NRR E-mail Capture - Sequoyah Nuclear Plant and Watts Bar Nuclear Plant - Final Request for Additional Information Related to Request for Alternative to OM Code Requirements ML19015A4192019-01-15015 January 2019 NRR E-mail Capture - RAI - Sequoyah Nuclear Plant, Units 1 and 2, LAR to Adopt 10 CFR50.69 Risk-informed SSC ML18344A0752018-12-10010 December 2018 NRR E-mail Capture - Request for Additional Information - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers and to Revise Updated Final Analysis Report (SQN-TS-17-04) ML18296A0022018-10-22022 October 2018 NRR E-mail Capture - Additional Information Needs - Sequoyah Units 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers Revise Updated Final Analysis Report (SQN-TS-17-04) ML18283B0592018-10-10010 October 2018 NRR E-mail Capture - Additional Information Needs Identified During Audit - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers Revise Updated Final Analysis Report (SQN-TS-17-04) ML18283A6232018-09-25025 September 2018 04 RP Inspection Document Request ML18233A1942018-08-21021 August 2018 NRR E-mail Capture - Additional Information Needs Identified - Sequoyah 1 and 2, Request to Modify Essential Raw Cooling Water Motor Control Center Breakers and to Revise Updated Final Analysis Report (SQN-TS-17-04) ML18138A1102018-05-17017 May 2018 Enclosurequest for Additional Information (Letter to E. D. Schrull Request for Additional Information Regarding Tennessee Valley Authority'S Decommissioning Funding Plan Update for Browns Ferry and Sequoyah Isfsis) ML18057A6372018-02-23023 February 2018 NRR E-mail Capture - Request for Additional Information Related to TVA Fleet Topical Report TVA-NPG-AWA16 - EPIC: L-2016-TOP-0011) ML17191A2062017-07-0606 July 2017 NRR E-mail Capture - Sequoyah Nuclear Station, Unit 1 & 2 - Request for Additional Information Related to LAR for Technical Specification 3.8.1.17 Note Modification (CAC Nos. MF9398 and MF9399) ML17150A0792017-05-23023 May 2017 NRR E-mail Capture - Request for Additional Information Related to TVA Fleet LAR for EAL Change to Adopt NEI-99-01 Rev.6 (CAC Nos. MF9054 - MF9060) ML17112A0402017-04-20020 April 2017 NRR E-mail Capture - Sequoyah Nuclear Station, Unit 1 & 2 - Request for Additional Information Related to LAR for Technical Specification 3.8.1, AC SOURCES-OPERATING ML17004A0612017-01-0404 January 2017 Notification of NRC Triennial Fire Protection Inspection (Team)(Report 05000327/2017007 and 05000328/2017007) ML15194A3882015-07-13013 July 2015 Request for Additional Information Related to LAR to Revise Ice Condenser Ice Mas Tech Spec ML15175A2912015-06-24024 June 2015 E-mail Re. Request for Additional Information RR RP-07 ML15159B1642015-06-22022 June 2015 Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application-Set 25 (TAC Nos. MF0481 and MF0482) ML15050A0962015-02-19019 February 2015 E-mail Re. Request for Additional Information Related to LAR to Ice Condendser Inc Mass Tech Spec ML15042A4702015-02-11011 February 2015 E-mail Re. Request for Additional Information Related to License Amendment Request to Revise Technical Specification on Ultimate Heat Sink ML14318A8052014-11-12012 November 2014 Requalification Program Inspection - Sequoyah Nuclear Plant ML14254A2042014-09-22022 September 2014 Requests for Additional Information for the Review of the Sequoyah Nuclear Plant, Units 1 and 2, License Renewal Application - Set 22 (TAC Nos. MF0481 and MF0482) ML14220A2132014-08-0808 August 2014 E-mail Re. Request for Additional Information Regarding Voluntary Risk Initiative National Fire Protection Association Standard 805 2023-02-27
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From: Buckberg, Perry To: Williams, Gordon Robert Cc: Hulvey, Kimberly Dawn; Shoop, Undine; Green, Kimberly
Subject:
Sequoyah Nuclear Plant, Request for Additional Information Regarding the Hydrologic Analysis LAR (EPID L-2020-LLA-0004)
Date: Tuesday, April 14, 2020 2:09:00 PM Attachments: IQVB RAIs for Sequoyah Hydrologic Analysis LAR L-2020-LLA-0004 4-14-2020.pdf Revised Draft RAIs e-mail for Sequoyah Hydrologic Analysis LAR -L-2020-LLA-0004.pdf
- Gordon, In a letter dated January 14, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20016A396), as supplemented by a letter dated February 18, 2020 (ADAMS Accession No. ML20049H184), Tennessee Valley Authority (TVA) submitted a license amendment request (LAR) for Sequoyah Nuclear Plant related to the new Sequoyah Nuclear Plant hydrologic analysis. The Nuclear Regulatory Commissions (NRCs) staff has reviewed the information in the submittals and has determined that additional information is needed in order for the NRC staff to complete its review.
The NRC staffs Quality Assurance Vendor Inspection branch has identified areas where additional information is needed to support their review and a Request for Additional Information (RAI) is attached. Drafts of the RAI provided to your staff on March 16, 2020, and March 23, 2020, are attached. As discussed in a clarification call earlier today, the NRC staff requests your response to the RAI within 30 days of the date of this email.
If you have any questions, please contact Perry Buckberg at (301) 415-1383 or perry.buckberg@nrc.gov.
U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Perry Buckberg Senior Project Manager / Agency 2.206 Petition Coordinator office: (301)415-1383 perry.buckberg@nrc.gov Mail Stop O-8B1a, Washington, DC, 20555-0001
REQUEST FOR ADDITIONAL INFORMATION (RAI)
LICENSE AMENDMENT REQUEST TO REVISE UFSAR RESULTING FROM NEW HYDROLOGIC ANALYSIS SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 EPID NO: L-2020-LLA-0004 In a letter dated January 14, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20016A396), as supplemented by a letter dated February 18, 2020 (ADAMS Accession No. ML20049H184), Tennessee Valley Authority (TVA) submitted a license amendment request (LAR) for Sequoyah Nuclear Plant related to a new hydrologic analysis.
The NRC staff has reviewed the information in the submittals and has determined that additional information is needed in order for the Nuclear Regulatory Commission staff to complete its review.
RAI-IQVB-1 Title 10 of the Code of Federal Regulations (10 CFR) 50.34(b)(6)(ii) requires information to be provided regarding the managerial and administrative controls to be used to assure safe operation, including a discussion of how applicable requirements within Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants, to 10 CFR Part 50, Domestic Licensing of Production and Utilization Facilities, are satisfied. In the February 18, 2020, Supplement TVA stated, in part, The dedication of the [Probable Maximum Precipitation (PMP)] Evaluation Tool was performed under the Barge Design Solutions (Barge) Nuclear Quality Assurance (QA) program...The Barge QA program has been audited and accepted by TVA and is on the TVA Acceptable Supplier List (ASL)...While the [Aeronautical Reconnaissance Coverage Geographic Information System (ArcGIS)] and [Quantum GIS (QGIS)] evaluation tools were not dedicated, the calculations performed using these tools were checked by either hand calculations or using alternative software in accordance with Barge procedures for design calculations and computer program applications, under the Barge QA program, which complies with NQA-1 Part II Subpart 2.7 Paragraph 202 and is consistent with similar TVA process control procedures under the TVA QA Program. The ArcGIS software functions that are outside of the functions included in the PMP Evaluation Tool [Software Dedication Report (SDR)], as noted above, were checked using QGIS as the alternate software in accordance with NQA-1 Part II Subpart 2.7 Paragraph 202 under the Barge QA Program.
In accordance with NQA-1-2008 and the 2009 Addenda, Part II, Subpart 2.7, Paragraph 202, The appropriate software engineering elements, described in para. 202 of this Subpart, shall define the control points and associated reviews. Reviews of software shall ensure compliance with the approved software design requirements...When review alone is not adequate to determine if requirements are met, alternate calculations shall be used, or tests shall be developed and integrated into the appropriate activities of the software development cycle.
The NRC staff reviewed the supplemental information provided by TVA and finds that the following additional information is needed to determine whether the procurement and use of the ArcGIS and QGIS evaluation tools are appropriately controlled under TVAs QA program in
accordance with the requirements of Appendix B to 10 CFR Part 50. Specifically, the NRC staff requests TVA to provide the following:
a) Information to clarify how hand calculations are used to verify the outputs of any of the tools used, including the PMP Evaluation Tool, ArcGIS and QGIS.
b) For cases where the output of one software tool is used to verify the output of another software tool (e,g., QGIS used to verify ArcGIS), information to demonstrate that these tools are sufficiently diverse (e.g., use of different software developers, different calculation methods, different software algorithms, different programming languages used to develop the tools) such that the potential for these tools to produce the same erroneous outputs are significantly reduced.
c) Information supporting the dedication of the PMP Evaluation Tool performed by Barge Design Solutions, including the dedication plan, the critical characteristics of the tool, the acceptance methods used, and documents (e.g., PMP Evaluation Tool SDR) demonstrating that commercial grade dedication was implemented adequately.
RAI-IQVB-2 Part 21 of 10 CFR defines the term dedication, in part, as, an acceptance process undertaken to provide reasonable assurance that a commercial grade item to be used as a basic component will perform its intended safety and, in this respect deemed equivalent to an item designed and manufactured under a 10 CFR Part 50, Appendix B quality assurance program.
In all cases, the dedication process must be conducted in accordance with applicable provisions of 10 CFR Part 50, Appendix B. Criterion III, Design Control of Appendix B to 10 CFR Part 50, requires, in part, that Measures shall also be established for the selection and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems and components... Design changes, including field changes, shall be subject to design control measures commensurate with those applied to the original design and be approved by the organization that performed the original design unless the applicant designates another responsible organization. In Attachment A to LAR to , TVA stated, in part, that The [Probable Maximum Precipitation (PMP) Evaluation]
Tool was used, as provided, as part of commercial grade dedication, with the following minor modifications. This attachment identified four modifications made to PMP Evaluation Tool and the rationale for making these modifications.
The NRC staff evaluated the information presented by TVA regarding these modifications to the previous dedicated PMP Evaluation Tool and finds that additional information is needed to support the staffs safety evaluation. Specifically, the NRC staff requests that TVA provide information to demonstrate that the minor modifications made to the PMP Evaluation Tool do not invalidate the results of the dedication of this tool and that these modifications were conducted under TVAs quality assurance program, as required by Criterion III of Appendix B to 10 CFR Part 50.
From: Buckberg, Perry To: "Williams, Gordon Robert" Cc: Hulvey, Kimberly Dawn
Subject:
Revised Draft RAIs - Hydrologic Analysis LAR (L-2020-LLA-0004)
Date: Monday, March 23, 2020 10:19:00 AM Attachments: Revised Draft IQVB RAIs for Sequoyah Hydrologic Analysis LAR -L-2020-LLA-0004.docx
- Gordon, The attached revised draft software related RAIs were revised as a result of the March 20 clarification call. Please review to ensure that there is no proprietary information contained in the draft RAIs, that the questions are understandable, that the regulatory basis is clear and to determine if the information was previously docketed.Please let me as soon as possible if a clarification phone call is needed and/or if a response should be expected within 30 days from the issuance of these as final RAIs.
U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Perry Buckberg Senior Project Manager / Agency 2.206 Petition Coordinator office: (301)415-1383 perry.buckberg@nrc.gov Mail Stop O-8B1a, Washington, DC, 20555-0001
DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO REVISE UFSAR RESULTING FROM NEW HYDROLOGIC ANALYSIS SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 EPID NO: L-2020-LLA-0004 In a letter dated January 14, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20016A396), as supplemented by a letter dated February 18, 2020 (ADAMS Accession No. ML20049H184), Tennessee Valley Authority (TVA) submitted a license amendment request (LAR) for Sequoyah Nuclear Plant related to a new hydrologic analysis.
The NRC staff has reviewed the information in the submittals and has determined that additional information is needed in order for the NRC staff to complete its review.
Question 1 Title 10 of the Code of Federal Regulations (10 CFR) 50.34(b)(6)(ii) requires information to be provided regarding the managerial and administrative controls to be used to assure safe operation, including a discussion of how applicable requirements within Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants, to 10 CFR Part 50, Domestic Licensing of Production and Utilization Facilities, are satisfied. In the February 18, 2020, Supplement TVA stated, in part, The dedication of the [Probable Maximum Precipitation (PMP)] Evaluation Tool was performed under the Barge Design Solutions (Barge) Nuclear Quality Assurance (QA) program...The Barge QA program has been audited and accepted by TVA and is on the TVA Acceptable Supplier List (ASL)...While the ArcGIS and [Quantum GIS (QGIS)] evaluation tools were not dedicated, the calculations performed using these tools were checked by either hand calculations or using alternative software in accordance with Barge procedures for design calculations and computer program applications, under the Barge QA program, which complies with NQA-1 Part II Subpart 2.7 Paragraph 202 and is consistent with similar TVA process control procedures under the TVA QA Program. The ArcGIS software functions that are outside of the functions included in the PMP Evaluation Tool [Software Dedication Report (SDR)], as noted above, were checked using QGIS as the alternate software in accordance with NQA-1 Part II Subpart 2.7 Paragraph 202 under the Barge QA Program.
In accordance with NQA-1-2008 and the 2009 Addenda, Part II, Subpart 2.7, Paragraph 202, The appropriate software engineering elements, described in para. 202 of this Subpart, shall define the control points and associated reviews. Reviews of software shall ensure compliance with the approved software design requirements...When review alone is not adequate to determine if requirements are met, alternate calculations shall be used, or tests shall be developed and integrated into the appropriate activities of the software development cycle.
The NRC staff reviewed the supplemental information provided by TVA and finds that the following additional information is needed to determine whether the procurement and use of the ArcGIS and QGIS evaluation tools are appropriately controlled under TVAs QA program in
accordance with the requirements of Appendix B to 10 CFR Part 50. Specifically, the NRC staff requests TVA to provide the following:
- 1) Information to clarify how hand calculations are used to verify the outputs of any of the tools used, including the PMP Evaluation Tool, ArcGIS and QGIS.
- 2) For cases where the output of one software tool (e.g., QGIS) is used to verify the output of another software tool (ArcGIS), information to demonstrate that these tools are sufficiently diverse (e.g., use of different software developers, different calculation methods, different software algorithms, different programming languages used to develop the tools) such that the potential for these tools to produce the same erroneous outputs are significantly reduced.
- 3) Information supporting the dedication of the PMP Evaluation Tool performed by Barge Design Solutions, including the dedication plan, the critical characteristics of the tool, the acceptance methods used, and documents (e.g., PMP Evaluation Tool SDR) demonstrating that commercial grade dedication was implemented adequately.
Question 2 10 CFR Part 21 defines the term dedication, in part as, an acceptance process undertaken to provide reasonable assurance that a commercial grade item to be used as a basic component will perform its intended safety and, in this respect deemed equivalent to an item designed and manufactured under a 10 CFR Part 50, Appendix B quality assurance program. In all cases, the dedication process must be conducted in accordance with applicable provisions of 10 CFR Part 50, Appendix B. Criterion III, Design Control of Appendix B to 10 CFR Part 50, requires, in part, that Measures shall also be established for the selection and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems and components... Design changes, including field changes, shall be subject to design control measures commensurate with those applied to the original design and be approved by the organization that performed the original design unless the applicant designates another responsible organization. In Attachment A to LAR to Enclosure 5, TVA stated in part, that The [Probable Maximum Precipitation (PMP) Evaluation] Tool was used, as provided, as part of commercial grade dedication, with the following minor modifications. This attachment identified four modifications made to PMP Evaluation Tool and the rationale for making these modifications.
The NRC staff evaluated the information presented by TVA regarding these modifications to the previous dedicated PMP Evaluation Tool and finds that additional information is needed to support the staffs safety evaluation. Specifically, the NRC staff requests that TVA provide information to demonstrate that the minor modifications made to the PMP Evaluation Tool do not invalidate the results of the dedication of this tool and that these modifications were conducted under TVAs quality assurance program, as required by Criterion III of Appendix B to 10 CFR Part 50.
From: Buckberg, Perry To: "Williams, Gordon Robert" Cc: Hulvey, Kimberly Dawn
Subject:
Draft RAIs - Hydrologic Analysis LAR (L-2020-LLA-0004)
Date: Monday, March 16, 2020 12:06:00 PM Attachments: Draft IQVB RAIs for Sequoyah Hydrologic Analysis LAR -L-2020-LLA-0004.docx
- Gordon, Attached are draft software related RAIs. Please review to ensure that there is no proprietary information contained in the draft RAIs, that the questions are understandable, that the regulatory basis is clear and to determine if the information was previously docketed. Please let me as soon as possible if a clarification phone call is needed and/or if a response should be expected within 30 days from the issuance of these as final RAIs.
U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Perry Buckberg Senior Project Manager / Agency 2.206 Petition Coordinator office: (301)415-1383 perry.buckberg@nrc.gov Mail Stop O-8B1a, Washington, DC, 20555-0001
DRAFT REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST TO REVISE UFSAR RESULTING FROM NEW HYDROLOGIC ANALYSIS SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 EPID NO: L-2020-LLA-0004 In a letter dated January 14, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20016A396), as supplemented by a letter dated February 18, 2020 (ADAMS Accession No. ML20049H184), Tennessee Valley Authority (TVA) submitted a license amendment request (LAR) for Sequoyah Nuclear Plant related to a new hydrologic analysis.
The NRC staff has reviewed the information in the submittals and has determined that additional information is needed in order for the NRC staff to complete its review.
Question 1 Title 10 of the Code of Federal Regulations (10 CFR) 50.34(b)(6)(ii) requires information to be provided regarding the managerial and administrative controls to be used to assure safe operation, including a discussion of how applicable requirements within Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants, to 10 CFR Part 50, Domestic Licensing of Production and Utilization Facilities, are satisfied. In the February 18, 2020, Supplement TVA stated, in part, The dedication of the [Probable Maximum Precipitation (PMP)] Evaluation Tool was performed under the Barge Design Solutions (Barge) Nuclear Quality Assurance (QA) program...The Barge QA program has been audited and accepted by TVA and is on the TVA Acceptable Supplier List (ASL)...While the ArcGIS and [Quantum GIS (QGIS)] evaluation tools were not dedicated, the calculations performed using these tools were checked by either hand calculations or using alternative software in accordance with Barge procedures for design calculations and computer program applications, under the Barge QA program, which complies with NQA-1 Part II Subpart 2.7 Paragraph 202 and is consistent with similar TVA process control procedures under the TVA QA Program. The ArcGIS software functions that are outside of the functions included in the PMP Evaluation Tool [Software Dedication Report (SDR)], as noted above, were checked using QGIS as the alternate software in accordance with NQA-1 Part II Subpart 2.7 Paragraph 202 under the Barge QA Program.
In accordance with NQA-1-2008 and the 2009 Addenda, Part II, Subpart 2.7, Paragraph 202, The appropriate software engineering elements, described in para. 202 of this Subpart, shall define the control points and associated reviews. Reviews of software shall ensure compliance with the approved software design requirements...When review alone is not adequate to determine if requirements are met, alternate calculations shall be used, or tests shall be developed and integrated into the appropriate activities of the software development cycle.
The NRC staff reviewed the supplemental information provided by TVA and finds that the following additional information is needed to determine whether the procurement and use of the ArcGIS and QGIS evaluation tools are appropriately controlled under TVAs QA program in
accordance with the requirements of Appendix B to 10 CFR Part 50. Specifically, the NRC staff requests TVA to provide the following:
- 1) Information to demonstrate that either:
- a. the hand calculations performed to verify the output ArcGIS and QGIS evaluation tools can independently determine the correctness of the tool outputs, or
- b. any alternate software used to supplement the hand calculations for verifying the correctness of the ArcGIS and QGIS tool outputs was developed under an Appendix B to 10 CFR Part 50 compliant QA program.
- 2) Information supporting the dedication of the PMP Evaluation Tool performed by Barge Design Solutions, including the dedication plan, the critical characteristics of the tool, the acceptance methods used, and documents (e.g., PMP Evaluation Tool SDR) demonstrating that commercial grade dedication was implemented adequately.
Question 2 10 CFR Part 21 defines the term dedication, in part as, an acceptance process undertaken to provide reasonable assurance that a commercial grade item to be used as a basic component will perform its intended safety and, in this respect deemed equivalent to an item designed and manufactured under a 10 CFR Part 50, Appendix B quality assurance program. In all cases, the dedication process must be conducted in accordance with applicable provisions of 10 CFR Part 50, Appendix B. Criterion III, Design Control of Appendix B to 10 CFR Part 50, requires, in part, that Measures shall also be established for the selection and review for suitability of application of materials, parts, equipment, and processes that are essential to the safety-related functions of the structures, systems and components... Design changes, including field changes, shall be subject to design control measures commensurate with those applied to the original design and be approved by the organization that performed the original design unless the applicant designates another responsible organization. In Attachment A to LAR to Enclosure 5, TVA stated in part, that The [Probable Maximum Precipitation (PMP) Evaluation] Tool was used, as provided, as part of commercial grade dedication, with the following minor modifications. This attachment identified four modifications made to PMP Evaluation Tool and the rationale for making these modifications.
The NRC staff evaluated the information presented by TVA regarding these modifications to the previous dedicated PMP Evaluation Tool and finds that additional information is needed to support the staffs safety evaluation. Specifically, the NRC staff requests that TVA provide information to demonstrate that the minor modifications made to the PMP Evaluation Tool do not invalidate the results of the dedication of this tool and that these modifications were conducted under TVAs quality assurance program, as required by Criterion III of Appendix B to 10 CFR Part 50.