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Category:E-Mail
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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Text
Setzer, Thomas From: Ambrosini, Josephine Sent: Friday, August 10, 2012 1:41 PM To: Bellamy, Ronald; Setzer, Thomas; Krafty, James; Haagensen, Brian; DeBoer, Joseph; Keighley, Elizabeth; Kim, James
Subject:
RE: UPDATE: Millstone U2 Ultimate Heat Sink Temperature Potential Licensing Actions Millstone received the requested license amendment. That, coupled with the forecasted rain, should keep them within TS limits for the next day or so. We may be back in this situation again depending on the weather and I will keep everyone informed.
Updates in Red from 0915 Dominion meeting; next update will be issued following their 1200 meeting.
Bottom Line Up Front: Millstone Unit 2 is approaching its Technical Specification (TS) limit for Ultimate Heat Sink (UHS) temperature and is exploring several licensing options, including a potential future NOED.
Backqround: At UHS temperature > 75 degrees, operators verify that the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average temperature is 5 75 degrees once per hour. If UHS temperature > 77 degrees (or the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average temperature > 75 degrees),
operators must take the plant to Hot Standby within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in Cold Shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. (TS 3.7.11)
Current UHS temperature (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average) is approximately 73 degrees, with daily temperatures fluctuating between 70-75 degrees. Millstone has entered the hourly monitoring action statement several times in the past few weeks.
- Latest data (0930 on August 10) 74.25 degrees 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average (using the highest valid local temp) 73.97 degrees 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average (using the average of the service water header temps as requested in the license amendment)
" Sound temperature (24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average using the highest valid local temp) is expected to exceed the limit at approximately 1300 today.
- Rain is expected this evening, which should help lower the temperatures some.
Licensee Actions: Millstone licensing held a conference call with NRR and later spoke with the resident inspectors. They are considering four potential actions:
- 1. TS bases change to adjust where the temperatures are taken. Currently, the highest valid local service water header temperature reading is used to validate the UHS limit. Millstone is requesting to use the average of the service water header temperatures, which is expected to give them approximately 0.3-0.6 degrees, margin. This request was submitted on July 17, 2012.
- 2. Exigent approval of #1 above, assuming the NRC would not be able to approve a change before the UHS limit is reached.
- 3. The long term solution is a TS amendment request to raise the UHS limit to a higher number (approximately 80 degrees). Millstone has not completed their analysis of this change and does not expect to submit an amendment until Spring 2013 at the earliest.
- 4. NOED.
" Millstone has requested an emergency amendment for licensing action #1 above. There is one outstanding technical issue, but NRR is expecting resolution soon.
" When the amendment is received, they have some procedure changes to make and other administrative actions 1
Licensee is also pursuing an internal procedure change related to instrument accuracy.
Currently, their administrative limit is 74.5 degrees for the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> average, in order to ensure compliance with the 75 degree UHS limit. They believe they can gain a few tenths of a degree margin.
Resident Actions/Assessment: We participated in the call and then had a lengthy discussion with licensing.
The NOED path does not appear to be a clear one, based on the lack of completed analysis which would show a raise in UHS temperature would not compromise safety. Millstone is considering proposing a risk-informed extension of allowed outage time for the NOED; i.e. if they reach 77 degrees they would not shut down within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, but instead would hold off for weather conditions to clear.
Also, there was some question from the licensee on the duration of the NOED, as this condition could potentially exist through the remainder of the summer. NRR seemed less than enthusiastic about the potential for a 60 day-long NOED.
- Residents to review engineering's attempt to adjust procedure limits to change from 74.5 degrees to ensure compliance with design basis calculations
- Still no request expected for NOED at this time
- IMPORTANT NOTE: Even if the amendment is approved, and even if they gain margin from eliminating inaccuracy in the instruments, environmental conditions may still warrant a shutdown within the next few days/weeks. These actions are not the long term solution.
Future Actions: Millstone is in the process of preparing a draft NOED, but does not intend to ask for one at this time. The weather forecast shows decreased temperatures for the next week, so they do not anticipate needing this request immediately. The resident staff will continue to monitor the situation and will keep the region and NRR informed of any new developments.
" Millstone is reviewing outage scopelduration if it becomes necessary to shut down. This is complicated by the weather (i.e. they would not want to come back online only to be in the same UHS condition a few days later) and also due to end of core life conditions.
" Site coverage for weekend: Jim is out of the area this weekend and Brian leaves for training on Sunday. Brian will cover any shutdown activities on Saturday, Jo will cover on Sunday. At this time, we do not require any additional assistance.
Please call with any questions. Thanks.
Jo Ambrosini USNRC Region I Senior Resident Inspector, Millstone 860-447-3170 2