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MONTHYEARML19023A4272019-01-17017 January 2019 Application to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors Project stage: Request ML19234A1112019-08-14014 August 2019 License Amendment Request to Revise TS 3.8.1.1, A.C. Sources - Operating, to Support Maintenance and Replacement of the Millstone Unit 3 'A' Reserve Station Service Transformer and 345 Kv South Bus Switchyard Components Project stage: Request ML19277E8392019-09-26026 September 2019 E-mail from R.Guzman to S.Sinha - Draft Unacceptable with Opportunity to Supplement Requested Action: LAR to Revise TS 3.8.1.1, Extension of AOT Project stage: Draft Other ML19284A3972019-10-0303 October 2019 Response to NRC Request for Additional Information on License Amendment Request to Adopt 10 CFR 50.69 Project stage: Response to RAI 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 Project stage: Acceptance Review ML19304A2942019-10-22022 October 2019 Supplement to Proposed License Amendment Request to Revise TS 3.8.1.1, A.C. Sources - Operating, to Support Maintenance and Replacement of the Millstone Unit 3 'A' Reserve Station Service Transformer and 345 Kv South Bus Switchyard Componen Project stage: Supplement ML19304B1542019-10-31031 October 2019 Acceptance Review Determination (E-mail 10/31/19) Extension of TS 3.8.1.1 Allowed Outage Time Project stage: Acceptance Review 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 Project stage: Draft RAI ML20028C1952020-01-21021 January 2020 1/21/2020 E-mail from R.Guzman to S. Sinha Setup of Online Reference Portal for LAR to Revise TS 3.8.1.1 Project stage: Other 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 Project stage: RAI ML20048A0192020-02-11011 February 2020 Response to Request for Additional Information for License Amendment Request to Revise TS 3.8.1.1, A.C. Sources - Operating, to Support Maintenance and Replacement of a Reserve Station Service Transformer and 345 Kv South Bus. Project stage: Response to RAI 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 Project stage: RAI ML20079K4242020-03-19019 March 2020 Response to Request for Additional Information for License and Request to Revise TS 3.8.1.1, A.C Sources - Operating, to Support Maintenance and Replacement of the Millstone Unit 3 'A' Reserve Station Service Transformer and 345 Kv South Bu Project stage: Response to RAI ML20105A0782020-04-14014 April 2020 Supplement to License Amendment Request to Revise TS 3.8.1.1, A.C. Sources - Operating, to Support Maintenance and Replacement of the 'A' Reserve Station Service Transformer and 345 Kv South Bus Switchyard Components Project stage: Supplement ML20140A3692020-06-24024 June 2020 Issuance of Amendment No. 339 Extension of Technical Specification 3.8.1.1, A.C. Sources - Operating, Allowed Outage Time Project stage: Approval 2019-09-26
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MONTHYEARML24032A4702024-02-0101 February 2024 Change in Estimated Review Schedule Revision to TS Design Features Section to Remove the Nine Mile Point Unit 3 Nuclear Project, LLC ML24024A0202024-01-24024 January 2024 Correction to Safety Evaluation Associated Wit Amendment No. 288 - Revision to Applicability Term for RCS Heat-Up and Cooldown Pressure-Temperature Limitations Figures ML24024A2452024-01-24024 January 2024 1/24/2024 E-mail from R.Guzman to S.Sinha - Acknowledgement of Error in SE for Amendment No. 288 - Revision to Applicability Term for RCS Heatup and Cooldown Pressure-Temperature Limitations Figures ML23326A0132023-11-22022 November 2023 Acceptance Review Determination LAR to Support Implementation of Framatome Gaia Fuel ML23318A0952023-11-14014 November 2023 Request for Additional Information (E-mail Dated 11/14/2023) LAR to Revise TSs Related to Framatome Gaia Fuel ML23317A0732023-11-13013 November 2023 Acceptance Review Determination - License Amendment Request Modification of TS SR 4.3.6.a ML23297A2312023-10-24024 October 2023 E-mail to File - Summary of September 13, 2023, Meeting with Dominion to Discuss Proposed LAR to Support Cycle Reloads Using Framatome Gaia Fuel ML23265A2302023-09-22022 September 2023 Acceptance Review Determination - License Amendment Request Revision to TS Design Features Section to Remove the Nine Mile Point Unit 3 Nuclear Project, LLC ML23258A0552023-08-31031 August 2023 Setup of Online Reference Portal and Audit Plan for the NRC Staff'S Review of LAR to Use Framatome Small Break and Realistic Large Break LOCA Methodologies (08/31/2023 e-mail) ML23199A2832023-07-18018 July 2023 Request for Additional Information (E-mail Dated 7/18/2023) LAR to Revise the Pressure-Temperature Limits ML23172A0752023-06-21021 June 2023 Acceptance Review Determination LAR to Revise TSs for Reactor Core Safety Limits, Fuel Assemblies, and COLR Related to Framatome Gaia Fuel ML23171B0522023-06-20020 June 2023 NRR E-mail Capture - RAI for Review of Appendix F to DOM-NAF-2-P (Redacted) ML23145A0052023-05-25025 May 2023 Acceptance Review Determination Exemption to Use Framatome Gaia Fuel Assemblies Containing Fuel Rods Fabricated with M5 Fuel Rod Cladding ML23145A0042023-05-25025 May 2023 Acceptance Review Determination LAR to Use Framatome Small Break and Realistic Large Break LOCA Methodologies ML23115A3022023-04-24024 April 2023 4/24/2023 E-mail from R.Guzman to S.Sinha - Acknowledgement of Error in Issuance of Amendments Adoption of TSTF-359, Increase Flexibility in Mode Restraints ML23089A1882023-03-29029 March 2023 Request for Additional Information (E-mail Dated 3/29/2023) Spring 2022 Steam Generator Tube Inspection Report ML23067A2162023-03-0707 March 2023 NRR E-mail Capture - RAI for North Anna, 1 & 2, Surry 1 & 2, Millstone, 2 & 3, Request for Approval of App. F Fleet Report DOM-NAF-2-P, Qual of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion VIPRE-D Computer Code ML23038A0152023-02-0707 February 2023 Acceptance Review Determination LAR to Revise the Applicability Term for RCS Heatup and Cooldown Pressure-Temperature Limitations Figures ML23024A1522023-01-24024 January 2023 Acceptance Review Determination LAR to Supplement Burnup Credit of Criticality Safety Analysis ML23018A0352023-01-17017 January 2023 NRR E-mail Capture - Acceptance Review for Fleet Report Re Appendix F of DOM-NAF-2-P (L-2022-LLT-0003) ML22320A5752022-11-16016 November 2022 E-mail to File - Summary of October 18, 2022, Meeting with Dominion to Discuss Requested Actions for Implementing Framatome Gaia Fuel ML22298A2052022-10-25025 October 2022 Acceptance Review Determination for Alternative Request for Extension of Examination Interval for Reactor Pressure Vessel Head Penetration Nozzles ML22292A3212022-10-19019 October 2022 Acceptance Review Determination for Alternative Request for Containment RSS Pump Periodic Verification Testing Program ML22297A1802022-10-0707 October 2022 Email Acknowledgement to Dominion Energy Nuclear Decommissioning Trust Fund Disbursement 30 Day Notification for Millstone Power Station Unit 1: Docket No 50-245 ML22278A0932022-10-0505 October 2022 E-mail to File - Summary of September 7, 2022, Meeting with Dominion to Discuss Proposed Supplement to the Spent Fuel Pool Criticality Safety Analysis (EPID L-2022-LRM-0059 ML22272A0332022-09-29029 September 2022 Memo E-mail to File - Summary of August 29, 2022, Meeting with Dominion to Discuss Proposed Alternative Request Post-peening follow-up Volumetric Exam of RPV Head Penetration Nozzle ML22252A1772022-09-0909 September 2022 Memo E-mail to File - Summary of August 9, 2022, Meeting with Dominion to Discuss Proposed Alternative Reqeust Recirculation Spray Pump Flow Testing (EPID L:2022-LRM-0057) ML22242A0452022-08-23023 August 2022 NRR E-mail Capture - Dominion GL 04-02 Response Draft RAIs (L-2017-LRC-0000) ML22174A3552022-06-23023 June 2022 NRR E-mail Capture - Acceptance Review for Dominion Fleet LAR to Implement TSTF-554 (L-2022-LLA-0078) ML22123A0812022-05-0303 May 2022 Acceptance Review Determination for Proposed LAR for TS Change Applicable to TSTF-359, Increase Flexibility in Mode Restraints ML22069A7192022-03-10010 March 2022 E-mail from R. Guzman to S. Sinha - Millstone Unit 3 Steam Generator Outage Conference Call ML22020A4122022-01-11011 January 2022 1/11/2022 State Consultation E-mail, R. Guzman to J. Semancik Millstone Power Station, Unit 3 Planned Issuance of Amendment to Clarify Shutdown Bank TS and Add Alternate Control Rod Position Monitoring Requirements ML21348A7392021-12-14014 December 2021 E-mail - Acceptance Review Determination Alternative Request IR-4-09 for Use Alternative Brazed Joint Assessment Methodology for Class 3 Moderate Energy Piping ML21347A9412021-12-13013 December 2021 E-mail from R.Guzman to S.Sinha - Acknowledgement of Error in Safety Evaluation for Amendment No. 280 Measurement Uncertainy Recapture Power Uprate ML21334A1922021-11-30030 November 2021 NRR E-mail Capture - Audit Plan for Reactor Core Thermal-Hydraulics Using the VIPRE-D Appendix E Review ML21326A1502021-11-22022 November 2021 NRR E-mail Capture - Acceptance Review for Relocation of Unit Staff Requirements to the QAPD LAR (L-2021-LLA-0195) ML21306A3302021-11-0202 November 2021 NRR E-mail Capture - Acceptance Review for TSTF-569 LAR ML21297A0072021-10-19019 October 2021 E-mail from R. Guzman to S. Sinha - Acknowledgemnt of Error in SE for Millstone Power Station, Unit 3, Amendment No. 279 Addition of Analytical Methodology to the COLR for LBLOCA ML21286A7372021-10-13013 October 2021 Additional Element Included in the Implementation Plan for the Surry Fuel Melt Safety Limit (SL) LAR ML21223A3042021-08-11011 August 2021 Request for Withholding Information from Public Disclosure Proposed LAR to Add an Analytical Methodology to the COLR for a Large Break LOCA ML21200A2562021-07-19019 July 2021 7/19/2021 E-mail Pressurizer Steam Space Line Classification 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 ML21147A2982021-05-27027 May 2021 Correction to Projected Review Completion Date, ASME Section XI Inservice Inspection Program Relief Requests, Limited Coverage Examinations, Third Period, 3rd 10-year Inservice Inspection Interval (EPID L-2020-LLR-0081 to LLR-0088) ML21141A0482021-05-18018 May 2021 5/18/2021 E-mail Proposed License Amendment Request Measurement Uncertainty Recapture Power Uprate 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 ML21103A0532021-04-13013 April 2021 NRR E-mail Capture - Millstone Unit No. 3 - Acceptance Review Determination: Request for Alternative Frequency to Supplemental Valve Position Indication Verification Testing Requirement ML21084A0042021-03-25025 March 2021 3/25/2021 E-mail, Acceptance Review Determination, Proposed License Amendment Request to Revise Shutdown Bank TS Requirements and Add Alternate Control Rod Position Monitoring Requirements 2024-02-01
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Guzman, Richard From: Guzman, Richard Sent: Thursday, September 26, 2019 6:03 PM To: 'Shayan Sinha'
Subject:
Millstone Unit 2 - LAR to revise TS 3.8.1.1, Extension of AOT - DRAFT Supplemental Information Needed to Accept Application for Review - (EPID: L-2019-LLA-0177)
- Shayan, As we discussed, the NRC staff has determined the subject license amendment request is unacceptable with opportunity to supplement per NRR Office Instruction LIC-109, Acceptance Review Procedures. Shown below are the draft information insufficiencies identified by the NRC staff. In order to make the application complete, the staff requests that the licensee supplement its application to address the insufficiencies described in parts 1.a and 1.b below.
Please let me know your groups availability for a conference call next week. At this time, we can support a call on Tuesday 1-4pm, Thursday 2-4pm, and Friday 10-12p.
- Thanks,
~~~~~~~~~
Rich Guzman Sr. PM, Division Operator Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Office: O-9C7 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov
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SUPPLEMENTAL INFORMATION NEEDED LICENSE AMENDMENT REQUEST RELATED TO REVISE TS 3.8.1.1, "A. C. SOURCES - OPERATING,"
TO SUPPORT MAINTENANCE AND REPLACEMENT OF THE MILLSTONE UNIT 3 'A' RESERVE STATION SERVICE TRANSFORMER AND 345 KV SOUTH BUS SWITCHYARD COMPONENTS By letter dated August 14,2019 (Agencywide Documents Access and Management System (ADAMS)
Accession No. ML19234A111), Dominion Energy Nuclear Connecticut, Inc., (DENC, the licensee) submitted a license amendment request (LAR) for the Millstone Power Station Unit 2 (MPS2). The proposed LAR would revise Technical Specification (TS) 3.8.1.1, "A. C. Sources - Operating," to add a permanent Required Action (a.3) that provides an option to extend the allowed outage time (AOT) from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 10 days for one inoperable offsite circuit. In addition, the licensee proposes a one-time exception to the new proposed Required Action a.3 that would extend the AOT to 35 days for one inoperable offsite circuit. Use of the 35-day AOT would allow replacement of the MPS3 'A' RSST, its associated equipment, and other 345 kV south bus switchyard components that are nearing the end of their dependable service life. This work is planned to take place no later than the fall 2023 outage (3R22) for Millstone Power Station, Unit 3 (MPS3).
1
The licensee states in the application that the proposed changes have been deterministically evaluated in accordance with the guidance of NUREG-0800, Branch Technical Position (BTP) 8-8, "Onsite (Emergency Diesel Generators) and Offsite Power Sources Allowed Outage Time Extensions," dated February 2012. Deviations from the deterministic criteria provided in BTP 8-8 that require supplemental risk information are supported by an evaluation consistent with Regulatory Guide (RG) 1.174, Rev. 3 and RG 1.177, Rev. 1.
The U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this LAR was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.
Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license (including the technical specifications) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.
The NRC staff has reviewed your application and concluded that the following information is necessary to enable the NRC staff to make an independent assessment regarding the acceptability of the proposed amendments in terms of regulatory requirements and the protection of public health and safety and the environment.
- 1. In Section 3.9 of the LAR, MPS2 FLEX Strategy, the licensee states that during the proposed permanent TS Required Action and one-time exception, DENC will utilize the FLEX diesel generators as a supplemental power source to the inoperable offsite power source. The technical evaluation to support this approach is provided in Section 4.0.
In Section 4.2 of the LAR, Supplemental Power Source (SPS) for Extended AOTs, the licensee states, DENC proposes to use the onsite 480 V FLEX diesel generators as the supplemental power source for the inoperable offsite circuit, to mitigate a postulated LOOP event. The FLEX diesel generators are selected as the supplemental power source because the MPS2 EDGs (which are the first line of defense) cannot be credited.
In Section 4.2.2 of the LAR, Initial Conditions - Electrical Power Configuration (for 10-Day/35-Day AOTs),
the licensee lists as one of the initial conditions: FLEX 4160 V portable generators are stored offsite but are available for connection to MPS2 4160 V bus 24D.
In Section 4.3 of the LAR, Assessment Against Branch Technical Position 8-8, the licensee states the following:
Two 4160 V generators are stored offsite in the NSRC [National SAFER Response Center] storage facility. These 4160 V generators would be used (as requested) to allow operators to place the unit in cold shutdown, if the alternative actions are unable to restore power. Therefore, the intent of this criterion is met. []
The deployment of the 480 V FLEX diesel generator and re-powering 480 V bus 22F within the timeline described in Table 1-3 will allow operators (as directed by the appropriate FSG procedure) to restore power to recharge the battery prior to depletion and to maintain RCS inventory. However, the onsite 480 V FLEX diesel generator will be connected to MPS2 480 V bus 22F within 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> rather than one hour. Stripping of non-required DC and vital 120 V instrument loads shows that battery life is extended to 29 hours3.356481e-4 days <br />0.00806 hours <br />4.794974e-5 weeks <br />1.10345e-5 months <br /> (Reference 1-37), well beyond the time battery charging will be restored via repowering 480 V bus 22F.
2
The staff finds that the application as submitted does not include information demonstrating that the proposed change meets the intent of the criteria identified in BTP 8-8. Specifically:
- a. The supplemental power source must demonstrate that it has enough capacity to carry all LOOP loads to bring the unit to a cold shutdown without any load shedding.
- b. To support the one-hour time for making this power source available, plants must assess their ability to cope with loss of all AC power for one hour independent of an AAC power source. The plant should have formal engineering calculations for equipment sizing and protection and have approved procedures for connecting the AAC or supplemental power sources to the safety buses.
Based on the above, the staff requests the licensee to provide technical justification to demonstrate how it meets the applicable criteria in BTP 8-8.
- 2. Additionally, the NRC staff noted the following items for the licensee to consider when evaluating its response to the above acceptance review items and supplementing its LAR as appropriate:
- a. The proposed TS markups do not discuss the compensatory measures and risk management actions taken during extended AOT. Since the NRC staffs review of the amendment considers the adequacy of compensatory measures and risk management actions, it is the staffs expectation that these items would be referenced in the TS markup.
- b. The LAR and the proposed TS do not discuss information concerning the proposed actions to be taken should severe weather conditions be anticipated prior to the scheduled transformer maintenance and replacement activities or if a severe thunderstorm warning or tornado warning is issued after entering TS Required Action a.3.
- c. The LAR states that the proposed activities for the permanent 10-day and the one-time 35-day offsite power AOT extensions are completed when Unit 3 is in Mode 5, 6, or defueled. However, the proposed Unit 2 TS markup does not indicate Unit 3 Mode(s) for entry into Required Action a.3 of TS 3.8.1.1.
- d. In several instances, the LAR references NRC draft Revision 1 of BTP 8-8 dated March 2018, and provides discussion of how the proposed change meets the proposed draft staff positions. The NRC staff has not issued the revised BTP as approved guidance for generic use. While the NRC staffs safety evaluation of the LAR will consider the plant-specific justifications provided by the licensee, it will not be evaluated against a draft (unapproved) update to the generic guidance.
- e. In Table 1-1 and 1-2 of the LAR, the licensee provided the duration (in days) for the various work/preventative maintenance activities and contingencies supporting both the proposed permanent 10-day and one-time 35-day AOTs. However, the licensee did not provide justification for the duration of the requested AOT (actual hours plus margin) based on plant-specific past operating experience.
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