Letter Sequence RAI |
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Initiation
- Request, Request, Request, Request
- Acceptance, Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
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MONTHYEARML0720002812007-07-13013 July 2007 License Amendment Request - Stretch Power Uprate - Supplemental Information Project stage: Supplement ML0720003862007-07-13013 July 2007 License Amendment Request, Stretch Power Uprate Project stage: Request ML0726702162007-10-15015 October 2007 Stretch Power Uprate Acceptance Review Project stage: Acceptance Review ML0727005452007-10-18018 October 2007 Westinghouse Electric Company LLC Request for Withholding Information from Public Disclosure Regarding Letter (CAW-07-2296), Subject: NEU-07-128 P-Attachment, Millstone Nuclear Power Station Unit 2 Stretch Power Uprate Program Supplemental Project stage: Withholding Request Acceptance ML0729601792007-10-29029 October 2007 Request for Additional Information, Stretch Power Uprate Amendment Request Project stage: RAI ML0732309762007-11-19019 November 2007 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Project stage: Response to RAI ML0731706652007-11-26026 November 2007 Request for Additional Information on Instrumentation and Controls and Fire Protection Regarding Stretch Power Uprate Amendment Request Project stage: RAI ML0734802402007-12-13013 December 2007 Supplemental Information for License Amendment Request Stretch Power Uprate Project stage: Supplement ML0733703842007-12-14014 December 2007 Request for Additional Information on the Stretch Power Uprate Amendment Request Project stage: RAI ML0732500812007-12-14014 December 2007 Westinghouse Electric Company LLC Request for Withholding Information from Public Disclosure Regarding Letter (CAW-07-2252), Subject: WCAP-16271-P, Millstone Unit 3 Spent Fuel Pool Criticality Safety Analysis, March 2007 (Proprietary), Date Project stage: Withholding Request Acceptance ML0735200512007-12-17017 December 2007 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Project stage: Response to RAI ML0801006002008-01-10010 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions EEEB-07-0049 Through EEEB-07-0057 Project stage: Response to RAI ML0801006112008-01-10010 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question CPNB-07-0048 Project stage: Response to RAI ML0801006042008-01-10010 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question AADB-07-0012 Project stage: Response to RAI ML0801006062008-01-10010 January 2008 Response to Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions SCVB-07-0058 and SCVB-07-0059 Project stage: Response to RAI ML0805804762008-01-11011 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions SRXB-07-0013 Through SRXB-07-0047 Project stage: Response to RAI ML0801704952008-01-11011 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question EMCB-07-0070 Project stage: Response to RAI ML0801400772008-01-11011 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request, Response to Questions SBPB-07-0082 Through SBPB-07-0087 Project stage: Response to RAI ML0801106952008-01-11011 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request, Response to Questions CSGB-07-0010 and CSGB-07-0011 Project stage: Response to RAI ML0801405702008-01-14014 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions EMCB-07-0060 Through EMCB-07-0069 and EMCB-07-0071 Through EMCB-07-0081 Project stage: Response to RAI ML0802205062008-01-18018 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question EICB-07-0106 Project stage: Response to RAI ML0802205272008-01-18018 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question SBPB-07-0105 Project stage: Response to RAI ML0802205302008-01-18018 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions SCVB-07-0091 Through SCVB-07-0104 Project stage: Response to RAI ML0802205412008-01-18018 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Questions SRXB-07-0088 Through SRXB-07-0090 Project stage: Response to RAI ML0802803752008-01-18018 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request, Response to Question AADB-07-0107 Project stage: Response to RAI ML0803203082008-01-31031 January 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question EMCB-07-0070 Project stage: Response to RAI ML0805603922008-02-25025 February 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request, Supplemental Response to Question EMCB-07-0072 Project stage: Supplement ML0805606152008-02-25025 February 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Revised and Supplemental Responses to Questions AFPB-07-0007 & AFPB-07-0008 Project stage: Supplement ML0807103912008-03-10010 March 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question SCVB-07-0091 Project stage: Response to RAI ML0807103772008-03-10010 March 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Response to Question AADB-07-0107 Project stage: Response to RAI ML0803501322008-03-13013 March 2008 Request for Withholding Information from Public Disclosure Regarding Millstone Power Station, Unit 3 Project stage: Withholding Request Acceptance ML0808405272008-03-17017 March 2008 Nancy Burton Petition to Intervene and Request for Hearing Project stage: Request ML0808508942008-03-25025 March 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Supplemental Response to Question EEEB-07-0052 Project stage: Supplement ML0808802682008-03-27027 March 2008 Supplemental Information Regarding Stretch Power Uprate License Amendment Request Project stage: Supplement ML0804606202008-03-28028 March 2008 Potential Schedule Change for Proposed Stretch Power Uprate License Amendment Request Project stage: Other ML0814300142008-04-0404 April 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Supplemental Response to Question EMCB-07-0072 Project stage: Supplement ML0810800242008-04-23023 April 2008 Request for Additional Information, Stretch Power Uprate Amendment Request Project stage: RAI ML0811506792008-04-24024 April 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Supplemental Information, Rod Withdrawal at Power Event Project stage: Supplement ML0812006432008-04-29029 April 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Revised Response to Questions EEEB-07-0052, EEEB-07-0054 and EEEB-07-0055 Project stage: Response to RAI ML0813606252008-05-15015 May 2008 Response to Request for Additional Information Regarding Stretch Power Uprate License Amendment Request Revised Response to Follow-ups EEEB-08-0108 Through EEEB08-0113 to Question EEEB-07-0052 Project stage: Response to RAI ML0814204432008-05-20020 May 2008 Supplemental Information Regarding Stretch Power Uprate License Amendment Request Miscellaneous Updates to the License Amendment Request Project stage: Supplement ML0814208242008-05-21021 May 2008 Stretch Power Uprate License Amendment Request Additional Information in Connection with the NRC Audit Held on May 13, 2008 in Rockville, Maryland Project stage: Request ML0808704572008-05-29029 May 2008 Draft Environmental Assessment and Finding of No Significant Impact for Proposed Stretch Power Uprate Project stage: Draft Other ML0817502222008-06-16016 June 2008 Notice of Appeal Project stage: Request ML0819302742008-07-10010 July 2008 Stretch Power Uprate License Amendment Request DNC Comments on Draft Safety Evaluation - Stretch Power Uprate Project stage: Draft Request ML0819307572008-07-11011 July 2008 Follow-up to Dominion Nuclear Connecticut, Inc. Letter, Dated July 10, 2008, Regarding the Draft Safety Evaluation - Stretch Power Uprate Project stage: Draft Approval ML0819901122008-07-16016 July 2008 Stretch Power Uprate License Amendment Request - Supplement to DNC Comments on Draft Safety Evaluation - Stretch Power Uprate ML0819300702008-07-30030 July 2008 Final Environmental Assessment and Finding of No Significant Impact for Proposed Stretch Power Uprate Project stage: Other ML0816105852008-08-12012 August 2008 License Amendment, Stretch Power Uprate Project stage: Other ML0822504182008-08-12012 August 2008 Stretch Power Uprate, Tec Specs to Amd 242 Project stage: Acceptance Review 2008-03-17
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Category:Letter
MONTHYEARML24030A7522024-01-30030 January 2024 Technical Specification Bases Pages IR 05000336/20234022024-01-30030 January 2024 Security Baseline Inspection Report 05000336/2023402 and 05000423/2023402 (Cover Letter Only) ML23341A0172024-01-12012 January 2024 Issuance of Amendment No. 288 Revision to Applicability Term for Reactor Coolant System Heatup and Cooldown Pressure-Temperature Limitations Figures IR 05000336/20234402024-01-11011 January 2024 Special Inspection Report 05000336/2023440 and 05000423/2023440 (Cover Letter Only) ML24004A1052024-01-0404 January 2024 Request for Information for a Biennial Problem Identification and Resolution Inspection; Inspection Report 05000336/2024010 & 05000423/2024010 ML23361A0942023-12-21021 December 2023 Response to Request for Additional Information Regarding Proposed License Amendment Request to Revise Technical Specifications for Reactor Core Safety Limits, Fuel Assemblies and Core Operating Limits Report . ML23283A3052023-12-20020 December 2023 Review of Appendix F to DOM-NAF2, Qualification of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion Energy VIPRE-D Computer Code (EPID L-2022-LLT-0003) (Nonproprietary) ML23361A0312023-12-20020 December 2023 Intent to Pursue Subsequent License Renewal ML23352A0202023-12-18018 December 2023 Senior Reactor and Reactor Operator Initial License Examinations ML23334A2242023-11-30030 November 2023 Request for Exemption from Enhanced Weapons Firearms Background Checks, and Security Event Notifications Implementation ML23324A4222023-11-20020 November 2023 Reactor Vessel Internals Inspections Aging Management Program Submittal Related to License Renewal Commitment 13 ML23324A4302023-11-20020 November 2023 Alloy 600 Aging Management Program Submittal Related to License Renewal Commitment 15 ML23317A2702023-11-13013 November 2023 Core Operating Limits Report, Cycle 23 IR 05000336/20230032023-11-0606 November 2023 Integrated Inspection Report 05000336/2023003 and 05000423/2023003 ML23298A1652023-10-26026 October 2023 Requalification Program Inspection IR 05000336/20234202023-10-0404 October 2023 Security Inspection Report 05000336/2023420 and 05000423/2023420 ML23230A0502023-10-0202 October 2023 5 of the Quality Assurance Topical Report - Review of Program Changes ML23226A0052023-09-26026 September 2023 Issuance of Amendment No. 287 Supplement to Spent Fuel Pool Criticality Safety Analysis IR 05000245/20230012023-09-19019 September 2023 Safstor Inspection Report 05000245/2023001 IR 05000336/20230102023-09-0808 September 2023 Commercial Grade Dedication Report 05000336/2023010 and 05000423/2023010 IR 05000336/20230052023-08-31031 August 2023 Updated Inspection Plan for Millstone Power Station, Units 2 and 3 (Report 05000336/2023005 and 05000423/2023005) ML23248A2132023-08-30030 August 2023 Response to Request for Additional Information Regarding Proposed License Amendment Request to Revise the Applicability Term for Reactor Coolant System Heatup and Cooldown Pressure-Temperature. ML23242A0142023-08-30030 August 2023 Operator Licensing Examination Approval ML23223A0552023-08-18018 August 2023 Request for Withholding Information from Public Disclosure for License Amendment Request to Revise Technical Specifications for Reactor Core Safety Limits, Fuel Assemblies, and COLR Related to Framatome Gaia Fuel ML23223A0482023-08-18018 August 2023 Request for Withholding Information from Public Disclosure for License Amendment Request to Use Framatome Small Break and Realistic Large Break LOCA Evaluation Methodologies for Establishing COLR Limits IR 05000336/20230022023-08-0909 August 2023 Integrated Inspection Report 05000336/2023002 and 05000423/2023002 ML23188A0432023-07-31031 July 2023 Authorization and Safety Evaluation for Alternative Request No. IR-04-11 ML23208A0922023-07-26026 July 2023 Request for Approval of Appendix F of Fleet Report DOM-NAF-2-P Qualification of Framatome ORFEO-GAIA and OORFE-NMGRID CHF Correlations in the Dominion Energy Vipre-D Computer Code Response ML23188A0202023-07-26026 July 2023 Closeout of Generic Letter 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation During Design Basis Accidents at Pressurized-Water Reactors ML23207A1102023-07-26026 July 2023 NRC Regulatory Issues Summary 2023-01 Preparation and Scheduling of Operator Licensing Examinations IR 05000336/20234012023-07-17017 July 2023 Material Control and Accounting Program Inspection Report 05000336/2023401 and 05000423/2023401 - (Cover Letter Only) ML23175A0052023-07-12012 July 2023 Alternative Request P-07 for Pump Periodic Verification Testing Program for Containment Recirculation Spray System Pumps ML23193A8562023-06-28028 June 2023 Submittal of Updates to the Final Safety Analysis Reports ML23178A1682023-06-26026 June 2023 2022 Annual Report of Emergency Core Cooling System (ECCS) Model Changes Pursuant to the Requirements of 10 CFR 50.46 ML23153A1732023-06-16016 June 2023 Correction to Amendment Nos. 346 & 286 Millstone, 294 & 277 North Anna, 311 & 311 Surry, and 225 Summer to Revise Technical Specifications to Adopt TSTF-554,Rev Reactor Coolant Leakage Requirement ML23151A0742023-06-12012 June 2023 Review of the Spring 2022 Steam Generator Tube Inspection Report ML23159A2202023-06-0808 June 2023 Associated Independent Spent Fuel Storage Installation Revision to Emergence Plan - Report of Changes IR 07200047/20234012023-06-0808 June 2023 NRC Independent Spent Fuel Storage Installation Security Inspection Report No. 07200047/2023401 2024-01-04
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML23318A0952023-11-14014 November 2023 Request for Additional Information (E-mail Dated 11/14/2023) LAR to Revise TSs Related to Framatome Gaia Fuel ML23199A2832023-07-18018 July 2023 Request for Additional Information (E-mail Dated 7/18/2023) LAR to Revise the Pressure-Temperature Limits ML23171B0522023-06-20020 June 2023 NRR E-mail Capture - RAI for Review of Appendix F to DOM-NAF-2-P (Redacted) ML23089A1882023-03-29029 March 2023 Request for Additional Information (E-mail Dated 3/29/2023) Spring 2022 Steam Generator Tube Inspection Report ML23073A1802023-03-14014 March 2023 Notification of Commercial Grade Dedication Inspection (05000336/2023010 and 05000423/2023010) and Request for Information ML22251A1292022-09-0909 September 2022 Request for Additional Information Related to Response to Generic Letter 2004-04 ML22242A0452022-08-23023 August 2022 NRR E-mail Capture - Dominion GL 04-02 Response Draft RAIs (L-2017-LRC-0000) ML21225A5022021-08-13013 August 2021 Request for Additional Information for North Anna Power Station, Units 1 and 2, Surry Power Station, Units 1 and 2, and Millstone Power Station, Units 2 and 3, Appendix E of Fleet Report Com-Naf-2 (EPID:L02021-LLT-0000) Public Version ML21195A2442021-07-13013 July 2021 NRR E-mail Capture - Draft RAI Appendix E to Topical Report DOM-NAF-2 Qualification of the Framatome BWU-I CHF Correlation in the Dominion Energy VIPRE-D Computer Code ML21182A2902021-07-0101 July 2021 7/1/2021 E-mail - Request for Additional Information Alternative Frequency to Supplemental Valve Position Verification Testing Requirements ML21112A3082021-04-22022 April 2021 Request for Additional Information (E-mail Dated 4/22/2021) License Amendment Request for Measurement Uncertainty Recapture Power Uprate ML21105A1152021-04-15015 April 2021 Request for Additional Information (e-mail Dated 4/15/2021) Proposed LAR for Addition of Analytical Methodology to the Core Operating Limits Report for a LBLOCA ML21078A0332021-03-18018 March 2021 NRR E-mail Capture - Millstone Power Station, Unit 2 - Request for Additional Information - Proposed LAR to Revise TSs for Steam Generator Inspection Frequency ML21076A4622021-03-17017 March 2021 NRR E-mail Capture - Draft RAI for Versatile Internals and Component Program for Reactors Vipre Code Review (L-2021-LLT-0000) ML21077A1652021-02-26026 February 2021 (02/26/2021 E-mail) Draft Request for Additional Information LAR to Revise Technical Specifications for Steam Generator Inspection Frequency ML21034A5762021-02-0303 February 2021 Request for Additional Information (e-mail Dated 1/3/2021) Alternative Request RR-05-06 Inservice Inspection Interval Extension for Steam Generator Weld Inspections ML20246G5612020-09-0202 September 2020 Request for Additional Information (E-mail Dated 9/2/2020) License Amendment Request for a One-Time Deferral of the Steam Generator Inspections ML20244A2902020-08-31031 August 2020 Request for Additional Information (E-mail Dated 8/31/2020) License Amendment Request to Revise Battery Surveillance Requirements ML20231A7172020-08-18018 August 2020 Request for Additional Information (e-mail Dated 8/18/2020) License Amendment Request to Revise TS Table 3.3-11 Accident Monitoring Instrumentation ML20184A0052020-07-0202 July 2020 Request for Additional Information (E-mail Dated 7/2/2020) Relief Request IR-3-33 for Limited Coverage Examiniations ML20075A0322020-03-15015 March 2020 Request for Additional Information (E-mail Dated 3/15/2020) Alternative Request IR-4-03 for Use of an Alternative Non-Code Methodology to Demonstrate Structural Integrity ML20050F9212020-02-19019 February 2020 Request for Additional Information (E-mail Dated 2/19/2020) Proposed LAR to Revise TS 3.8.1.1, AC Sources Operating ML20023D0372020-01-23023 January 2020 Request for Additional Information (E-mail Dated 1/23/2020) Proposed LAR to Revise TS 3.8.1.1, AC Sources Operating ML19361A0382019-12-23023 December 2019 12/23/19 E-mail from R.Guzman to S. Sinha - Draft Request for Additional Information Planned Audit of LAR to Revise TS 3.8.1.1 ML19277B9082019-10-0707 October 2019 Supplemental Information Needed for Acceptance of Requested Licensing Action Extension of Technical Specification 3.8.1.1, A.C. Sources - Operating, Allowed Outage Time ML19248D7552019-09-0505 September 2019 Request for Additional Information Via E-mail from R.Guzman to S. Sinha Proposed License Amendment Request to Adopt 10 CFR 50.69 ML19169A0962019-06-17017 June 2019 NRR E-mail Capture - Request for Additional Information Emergency Action Level Scheme Change for Millstone Power Station - Units 1, 2, and 3, North Anna Power Station - Units 1 and 2, and Surry Power Station - Units 1 and 2 ML19162A0052019-06-10010 June 2019 NRR E-mail Capture - Draft RAIs for Dominion EAL Scheme Change ML19042A1822019-02-11011 February 2019 Request for Additional Information LAR for TS Changes to Spent Fuel Storage and New Fuel Storage, 02/11/2019 E-mail from R. Guzman to S. Sinha ML18291B3262018-10-18018 October 2018 Request for Additional Information LAR Regarding Proposed Technical Specification Changes for Spent Fuel Pool Storage and New Fuel Storage, E-mail from R.Guzman to S.Sinha ML18277A1762018-10-0404 October 2018 Request for Additional Information LAR to Revise TS Action Statement for Loss of Control Building Inlet Ventilation Rad Monitor Instrumentation Channels (e-mail from R.Guzman to M.Whitlock, EPID: L-2018-LLA-0099) ML18213A1152018-08-0101 August 2018 Request for Additional Information Alternative Request P-06 'C' Charging Pump (08/01/2018 E-mail from R. Guzman to M. Whitlock) ML18171A1532018-06-20020 June 2018 Request for Additional Information Via E-mail from R.Guzman to W.Craft Alternative Requests for Inservice Testing Program (E-mail from R.Guzman to W.Craft) (EPID: L-2018-LLR-0012-LLR-0022) ML18137A3132018-05-17017 May 2018 Request for Additional Information Via E-mail from R.Guzman to W.Craft Proposed License Amendment Request to Revise ILRT Type a and Type C Test Intervals ML17297A8472017-10-27027 October 2017 Request for Supplemental Information Regarding Generic Letter 2016-01, Monitoring of Neutron Absorbing Materials in Spent Fuel Pools (CAC No. MF9430; EPID L-2016-LRC-0001) ML17033B6142017-02-0202 February 2017 Request for Additional Information, 2017/02/02 E-mail from R.Guzman to W.Craft Proposed Alternative RR-04-24 and IR-3-30 for the Elimination of Reactor Pressure Vessel Threads in Flange Examination (CAC Nos. MF8468/MF8469) ML17005A3282017-01-0505 January 2017 MPS2 EOC-23 and MPS3 EOC-17 Steam Generator Tube Inspection Reports - Requests for Additional Information ML16260A0062016-09-16016 September 2016 2016/09/16 E-mail from R. Guzman to W. Craft Request for Additional Information - License Amendment Request Realistic Large Break Loss of Coolant Accident Analysis (MF7761) ML16267A0022016-09-12012 September 2016 2016/09/12 E-mail from R.Guzman to W.Craft Request for Additional Information - LAR to Revise ECCS TS and FSAR Ch. 14 to Remove Charging (MF7297) ML16133A3562016-05-12012 May 2016 E-mail from R. Guzman to C. Sly Request for Additional Information Supporting License Amendment Request to Remove Charging Credit ML16068A4142016-03-0808 March 2016 Request for Additional Information - Relief Request RR-04-19 Examination Cat R-A, Risk-Informed Piping Examinations (MF6569) ML16055A5302016-02-24024 February 2016 2016/02/24 E-mail from R.Guzman to W.Craft Request for Additional Information - LAR to Adopt Dominion Core Design and Safety Analysis Methods (MF6251) ML16047A1712016-02-16016 February 2016 2016/02/16 E-mail from R.Guzman to M. Whitlock Request for Additional Information - Small Break Loss of Coolant Accident Re-Analysis (MF6700) ML16043A5232016-02-12012 February 2016 Request for Additional Information 2016/02/12 E-mail from R. Guzman to M.Whitlock Relief Requests IR-3-22 and IR-3-23 (CAC Nos. MF6573 and MF6574) ML16013A4772016-01-13013 January 2016 NRR E-mail Capture - Millstone Power Station, Units 2 and 3 - Request for Additional Information License Amendment Request for Removal of Severe Line Outage Detection (Slod) from the Offsite Power System - (MF6430, MF6431) ML16011A5172016-01-11011 January 2016 NRR E-mail Capture - Millstone Power Station, Unit 3, Reactor Vessel Surveillance Capsule Withdrawal Schedule - Request for Additional Information ML15349A8312016-01-0808 January 2016 Request for Additional Information License Amendment Request to Adopt Dominion Core Design and Safety Analysis Methods ML15337A1512015-12-0303 December 2015 NRR Email Capture - Millstone Unit 2 Request for Additional Information ML15279A1092015-10-0606 October 2015 NRR e-mail Capture - Millstone Power Station, Unit 3, NRC Staff Request for Additional Information - Relief Request Nos. IR-3-19,3-20,3-21 ML15275A1432015-10-0202 October 2015 2015/10/02 E-mail from R.Guzman to W.Craft - Follow-up Request for Additional Information TSTF-523, Revision 2, GL 2008-01, Managing Gas Accumulation 2023-07-18
[Table view] |
Text
April 23, 2008 Mr. David A. Christian President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
MILLSTONE POWER STATION, UNIT NO. 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STRETCH POWER UPRATE AMENDMENT REQUEST (TAC NO. MD6070)
Dear Mr. Christian:
By letter dated July 13, 2007,1 as supplemented by additional letters,2 Dominion Nuclear Connecticut, Inc. (DNC), licensee of Millstone Power Station, Unit No 3 (MPS3), submitted the application, Dominion Nuclear Connecticut, Inc., Millstone Power Station Unit 3, License Amendment Request, Stretch Power Uprate, to the U.S. Nuclear Regulatory Commission (NRC). The proposed license amendment would allow an increase in the maximum authorized power level from 3,411 megawatts thermal (MWt) to 3,650 MWt and make changes to the technical specifications, as necessary, to support operation at the stretch power level.
In order to complete its review, the NRC staff has determined that additional information is needed, and requires a response to each of the enclosed questions.
The license amendment request (LAR), dated July 13, 2007, stated that the environmental qualification (EQ) evaluations for the Main Steam Valve Building (MSVB), Engineered Safety Features (ESF) Building and Auxiliary Building were not completed. The NRC staff informed DNC staff in November 2007 via telephone that the NRC staff would not be able to complete the Electrical Engineering evaluation of the stretch power uprate (SPU) until the EQ evaluations were completed. Additionally, the NRC had several questions and issued a request for additional information (RAI) on December 14, 2007.3 Nine questions were issued with seven relating to EQ.
By letter dated January 10, 2008, DNC provided RAI responses to the 8 of 9 Electrical Engineering questions. DNC stated that it would provide the results of RAI EEEB-07-0052 by March 31, 2008. On February 14, 2008, a teleconference was held discussing the LAR schedule. Once again, the NRC staff informed DNC that the NRC staff needed the EQ evaluations to proceed with the Electrical Engineering review.
1 DNC Letter (07-450) to the NRC, Dominion Nuclear Connecticut, Inc., Millstone Power Station Unit 3 License Amendment Request, Stretch Power Uprate, dated July 13, 2007 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML072000386).
2 Supplemental Letters dated: July 13, 2007 (ML072000281); September 12, 2007 (ML072570061); November 19, 2007 (ML073230976); December 13, 2007 (ML073480240); December 17, 2007 (ML073520051); January 10, 2008 (ML080100600, ML080100604, ML080100606, ML080100611); January 11, 2008 (ML080110695, ML080140077, ML080170495, ML080580476);
January 14, 2008 (ML080140570); January 18, 2008 (ML080220506, ML080220527, ML080220530, ML080220541, ML080280375);
January 31, 2008 (ML080320308); February 25, 2008 (ML080560392, ML080560615); March 5, 2008 (ML080660108); March 10, 2008 (ML080710377, ML080710391); March 25, 2008 (ML080850894); March 27, 2008 (ML080880268); and April 4, 2008 (ML08xxxxxxx).
3 ADAMS Accession No. ML073370384
DNC notified the NRC staff that DNC would provide the response to RAI EEEB-07-0052 by March 31, 2008.
By letter dated March 25, 2008, DNC provided supplemental information regarding the EQ evaluations in MSVB, ESF and Auxiliary Buildings. The response did not provide the necessary information or sufficient detail. DNC failed to provide in-depth assumptions and methodology for the EQ evaluations in its responses. On March 31, 2008, a teleconference was held to discuss the lack of information in DNCs responses. The NRC staff informed the DNC staff that the details in its responses were lacking, and further information was needed to complete the safety evaluation.
The resultant NRC staff follow-up questions were discussed via teleconference on April 15, 2008, with the DNC staff to ensure that the questions were understandable, the regulatory basis was clear and to determine if the information was previously docketed. During a teleconference on April 18, 2008, with Mr. Bill Bartron of the DNC staff, the NRC staff informed Mr. Bartron that the EQ responses, as well as the reactor systems supplement, are needed by April 30, 2008; otherwise, the current schedule for the completion of the proposed stretch power uprate amendment will be adversely effected. The possibility of schedule slippage has been previously stated in a letter to you, dated March 28, 2008.4 Please note that if you do not respond to this letter within the prescribed response times or provide an acceptable alternate date in writing, we may reject your application for amendment under the provisions of Title 10 of the Code of Federal Regulations, Section 2.108. If you have any questions, I can be reached at (301) 415-3100.
Sincerely,
/RA/
John G. Lamb, Senior Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-423
Enclosure:
As stated cc w/encl: See next page 4
ADAMS Accession No. ML080460620
ML081080024 OFFICE LPL1-2/PM LPL1-2/LA EEEB/BC LPL1-2/BC NAME JLamb ABaxter VJGoel for HChernoff GWilson DATE 04/ 22 /08 04/ 22 /08 04/ 22 /08 04/ 23 /08
REQUEST FOR ADDITIONAL INFORMATION MILLSTONE POWER STATION, UNIT NO. 3 STRETCH POWER UPRATE LICENSE AMENDMENT REQUEST TAC NO. MD6070 DOCKET NO. 50-423 By letter dated July 13, 2007,1 as supplemented by additional letters,2 Dominion Nuclear Connecticut, Inc. (DNC), licensee of Millstone Power Station, Unit No. 3 (MPS3), submitted the application, Dominion Nuclear Connecticut, Inc., Millstone Power Station Unit 3, License Amendment Request, Stretch Power Uprate, to the U.S. Nuclear Regulatory Commission (NRC). The proposed license amendment would allow an increase in the maximum authorized power level from 3,411 megawatts thermal (MWt) to 3,650 MWt, and make changes to the technical specifications, as necessary, to support operation at the stretch power level.
The U.S. Nuclear Regulatory Commission (NRC) staff has been reviewing the submittal and has determined that additional information is needed to complete its review.
ELECTRICAL ENGINEERING BRANCH EEEB-07-0052 Follow-Up (EEEB-08-0108)
In the March 25, 2008, letter, the licensee states that the analysis for the Main Steam Valve Building (MSVB) following a main steam line break (MSLB) is performed for the duration of the components mission time. Specify the mission time and function for each of the affected components in the MSVB. Describe the effects of the increased temperature and pressure on the affected components. In addition, explain, in detail, the assumptions and methodology used to evaluate the components. Provide a comparison of the pre-stretch power uprate (SPU) and SPU environmental temperature and pressure profile. Also, provide the detailed environmental qualification (EQ) evaluations and calculations for the ASCO solenoid valves, NAMCo limit switches, Rosemount pressure transmitters, Limitorque motor-operated valves and solenoids associated with Sulzer main steam isolation valves (MSIVs) and ITT actuators.
1 DNC Letter (07-450) to the NRC, Dominion Nuclear Connecticut, Inc., Millstone Power Station Unit 3 License Amendment Request, Stretch Power Uprate, dated July 13, 2007 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML072000386 2
Supplemental Letters dated: July 13, 2007 (ML072000281); September 12, 2007 (ML072570061); November 19, 2007 (ML073230976); December 13, 2007 (ML073480240); December 17, 2007 (ML073520051); January 10, 2008 (ML080100600, ML080100604, ML080100606, ML080100611); January 11, 2008 (ML080110695, ML080140077, ML080170495, ML080580476);
January 14, 2008 (ML080140570); January 18, 2008 (ML080220506, ML080220527, ML080220530, ML080220541, ML080280375);
January 31, 2008 (ML080320308); February 25, 2008 (ML080560392, ML080560615); March 5, 2008 (ML080660108); March 10, 2008 (ML080710377, ML080710391); March 25, 2008 (ML080850894); March 27, 2008 (ML080880268); and April 4, 2008 (ML08xxxxxxx)
Enclosure
EEEB-07-0052 Follow-Up (EEEB-08-0109)
Provide the worst-case breaks and their impact on the EQ components for the MSVB EQ analysis.
EEEB-07-0052 Follow-Up (EEEB-08-0110)
In the March 25, 2008, letter, the licensee states that the outside temperature (i.e. component casing temperature) of the equipment, instead of the internal temperature of the equipment, was conservatively compared with the component qualification temperature. Provide a basis for why the outside temperature is conservative for the affected EQ components.
EEEB-07-0052 Follow-Up (EEEB-08-0111)
During the March 31, 2008, teleconference, the licensee stated that due to the temperature increase in the MSVB, a design change (enclosing the Limitorque motors with insulation) will be required to maintain the qualification of the motors. Describe the design change in detail and provide a detailed evaluation justifying how this new design, (enclosing the motors with insulation), does not impact the original qualification configuration of the Limitorque motors. In addition, provide a schedule for implementing the aforementioned design change.
EEEB-07-0052 Follow-Up (EEEB-08-0112)
Do the motor-operated valves installed in the MSVB use magnesium rotors? If yes, then evaluate the impact of high temperatures on the motors due to the SPU to ensure that these motors do not experience the failure mechanism identified in Information Notice 2006-26 and industry operating experience.
EEEB-07-0052 Follow-Up (EEEB-08-0113)
In the March 25, 2008, letter, the licensee stated that the ITT actuators are not required to mitigate the consequences of an MSLB in the MSVB. Provide the function of the ITT actuators and the impact on other components or systems if the ITT actuators fail due to MSLB in the MSVB under SPU conditions.
EEEB-07-0054 and EEB-07-0055 Follow-Up (EEEB-08-0114)
In the January 10, 2008, letter, the licensee stated, in regards to license renewal, that the EQ program will re-evaluate EQ components to ensure that the current qualification remains valid for the period of extended operation. The licensee also states that the SPU will not have any impact on the EQ programs ability to adequately manage the effects of aging on the intended functions of EQ components. Describe why the SPU has no impact on the EQ program in regards to license renewal, as stated in the July 13, 2007, submittal. Please clarify whether EQ evaluations have been completed regarding the qualification of equipment for the period of extended operation.
Millstone Power Station, Unit No. 3 cc:
Lillilan M. Cuoco, Esquire Mr. Joseph Roy, Senior Counsel Director of Operations Dominion Resources Services, Inc. Massachusetts Municipal Wholesale Building 475, 5th Floor Electric Company Rope Ferry Road Moody Street Waterford, CT 06385 P.O. Box 426 Ludlow, MA 01056 Edward L. Wilds, Jr., Ph.D.
Director, Division of Radiation Mr. J. Alan Price Department of Environmental Protection Site Vice President 79 Elm Street Dominion Nuclear Connecticut, Inc.
Hartford, CT 06106-5127 Building 475, 5th Floor Rope Ferry Road Regional Administrator, Region I Waterford, CT 06385 U.S. Nuclear Regulatory Commission 475 Allendale Road Mr. Chris Funderburk King of Prussia, PA 19406 Director, Nuclear Licensing and Operations Support First Selectmen Dominion Resources Services, Inc.
Town of Waterford 5000 Dominion Boulevard 15 Rope Ferry Road Glen Allen, VA 23060-6711 Waterford, CT 06385 Mr. William D. Bartron Mr. J. W. "Bill" Sheehan Licensing Supervisor Co-Chair NEAC Dominion Nuclear Connecticut, Inc.
19 Laurel Crest Drive Building 475, 5th Floor Waterford, CT 06385 Rope Ferry Road Waterford, CT 06385 Mr. Evan W. Woollacott Co-Chair Mr. David A. Sommers Nuclear Energy Advisory Council Dominion Resources Services, Inc.
128 Terry's Plain Road 5000 Dominion Boulevard Simsbury, CT 06070 Glen Allen, VA 23060-6711 Senior Resident Inspector Mr. David A. Christian Millstone Power Station President and Chief Nuclear Officer c/o U.S. Nuclear Regulatory Commission Virginia Electric and Power Company P. O. Box 513 Innsbrook Technical Center Niantic, CT 06357 5000 Dominion Boulevard Glen Allen, VA 23060-6711 Ms. Nancy Burton 147 Cross Highway Redding Ridge, CT 00870