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MONTHYEARML15040A7202015-03-12012 March 2015 Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit No. 2 Project stage: Withholding Request Acceptance ML15083A5592015-03-24024 March 2015 Extended Power Uprate: Response to Replacement Steam Dryer Requests for Additional Information Project stage: Other ML15033A4892015-03-27027 March 2015 NRC Staff Review of Replacement Steam Dryer Re-Benchmarking to Support Extended Power Uprate Power Ascension Project stage: Approval ML15086A3332015-03-27027 March 2015 Request for Additional Information Regarding Replacement Steam Dryer Analysis, Exelon Generation Company, Llc. Peach Bottom Atomic Power Station - Unit 2 Project stage: RAI ML15096A0082015-04-0505 April 2015 Extended Power Uprate: Response to Replacement Steam Dryer Requests for Additional Information Project stage: Other ML15084A3422015-04-0606 April 2015 Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit No. 2 Project stage: Withholding Request Acceptance ML15099A7482015-04-0909 April 2015 Power Ascension Hold at 104% of 3514 Mwt Project stage: Other ML15110A0982015-04-10010 April 2015 E-Mail Peach Bottom Unit 2 - Power Ascension Hold at 104% of 3514 Mwt Project stage: Other ML15091A1342015-04-16016 April 2015 Summary of Closed Meeting Held on March 26, 2015, with Exelon Generation Company, LLC to Discuss Steam Dryer Analysis for Peach Bottom Atomic Power Station, Unit No. 2 Project stage: Meeting ML15125A1682015-04-25025 April 2015 Power Ascension - 108% Hold Point Decision Project stage: Other ML15127A5182015-05-0505 May 2015 Draft Request for Additional Information (Tac No. MF4792) Project stage: Draft RAI ML15127A5262015-05-0505 May 2015 Draft Request for Additional Information (Attachment 2) Project stage: Draft RAI ML15110A0852015-05-12012 May 2015 Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit No. 2 Project stage: Withholding Request Acceptance ML15135A4372015-05-15015 May 2015 Approval of Steam Dryer Methodology and Resumption of EPU Power Ascension Project stage: Other ML15135A4022015-05-15015 May 2015 Extended Power Uprate: Response to Replacement Steam Dryer Request for Additional Information Project stage: Request ML15127A2082015-05-19019 May 2015 Approval of Revision to Methodology for Establishing Replacement Steam Dryer Strain Limits Project stage: Other ML15196A6372015-07-15015 July 2015 Error Identified in Letter from Exelon to NRC Re Predicted Strain Ratios Provided in Response to Request for Additional Information (RAI-11) Project stage: Response to RAI 2015-04-05
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Category:Meeting Summary
MONTHYEARML23320A2472023-11-17017 November 2023 Constellation - Summary of November 14, 2023, Public Pre-Application Meeting with Constellation Energy Generation, LLC on Adoption of TSTF-591 ML23276A6522023-10-11011 October 2023 Pre-submittal Meeting Summary, September 14, 2023 ML23263B1062023-09-22022 September 2023 R. E. Ginna Nuclear Power Plant - Constellation - Pre-Application Amse 9/18/2023 Meeting Summary ML23179A0012023-06-28028 June 2023 6/7/2023 - Annual Assessment Meeting for Pa/Md/Ny/Nj Nuclear Power Plants - Meeting Summary ML23142A1602023-05-23023 May 2023 Summary of April 11, 2023, Public Observation Meeting with Constellation Energy Generation, LLC Re Proposed Exemption Request from Work Hour Requirements ML23055A0352023-03-24024 March 2023 Summary of February 23, 2023, with Constellation Energy Generation, LLC on Proposed Changes to Emergency Plans to Revise Emergency Action Levels ML22187A1462022-07-0606 July 2022 Joint Annual Assessment Meeting for Pa/Md/Nj/Ny Nuclear Power Plants - Meeting Summary ML21333A1532021-11-30030 November 2021 Summary of November 16, 2021, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Extend the Inservice Inspection Interval ML21237A0412021-08-30030 August 2021 Summary of the July 27, 2021, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Use Case OMN-28, ML21176A0822021-07-0606 July 2021 June 15, 2021, Summary of Meeting with Exelon Generation Company, LLC Vessel Nozzle Repair Related to a Planned Request for an Alternative Related to Reactor Pressure ML21139A1852021-06-22022 June 2021 Summary of Meeting with Exelon Generation Company, LLC Regarding Its Requested Alternative to Eliminate Certain Documentation Requirements for the Replacement of Pressure Retaining Bolting ML21011A2822021-01-21021 January 2021 Summary of January 6, 2021, Presubmittal Meeting Between the NRC and Exelon Generation Company, LLC Regarding Licensing Activities to Support the Planned Early Closures of Byron, Unit Nos. 1 and 2 and Dresden, Units 2 and 3 ML20351A2832020-12-18018 December 2020 Summary of Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Exemption to Reduce the Frequency of Updates to Its Inservice Testing and Inspection Programs ML20342A3522020-12-10010 December 2020 Summary of November 13, 2020, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alterantive to Certain Documentation Requirements for the Replacement of Pressure Retaining Bolting (EPID-L-2020-LRM-0102) ML20323A0332020-12-0101 December 2020 Summary of November 4, 2020, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Reduce the Frequency of Updates to Its Inservice Testing and Inspection Programs ML20197A2722020-07-15015 July 2020 2020 Beaver Valley, Calvert Cliffs, Limerick Peach Bottom, Susquehanna Annual Assessment Webinar Summary ML20181A0002020-06-29029 June 2020 Summary of 6/24/20 Meeting with Exelon Generation Company, LLC Regarding Planned Request for Alternative to Supplemental Valve Position Indication Testing Requirements for Braidwood, Calvert Cliffs, Clinton, Limerick, Nine Mile, Peach Botto ML19326A3152019-12-0303 December 2019 Summary of November 18, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request for an Alternative to Supplemental Valve Position Indication Testing Requirements ML19326C3582019-12-0303 December 2019 Summary of November 20, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Revise the Quality Assurance Program ML19273B9692019-10-0202 October 2019 September 12, 2019 - Public Meeting to Discuss Draft Supplement 10, Second Renewal, to the Generic EIS for License Renewal of Nuclear Plants Regarding Peach Bottom Atomic Power Station Units 2 and 3 SLRA (EPID: L-201-RNW-0013) ML19238A3032019-09-27027 September 2019 Public Clarification Call with Exelon to Discuss Exelon'S Response to NRC Requests for Additional Information on Environmental Fatigue ML19246A1452019-09-27027 September 2019 Clarification Call to Discuss Exelon'S Response to NRC Requests for Additional Information (RAI) 3.3.2.1.1-1 ML19240A3002019-09-27027 September 2019 Public Clarification Call with Exelon to Discuss Questions on Their Coatings and Linings of Certain Components Aging Management Program and Their Inspection of Buried and Underground Piping and Tanks Aging Management Program for SLR ML19191A1882019-07-0909 July 2019 Joint Annual Assessment Meeting (Webinar) for Pennsylvania Power Plants - Meeting Summary ML19162A0272019-06-21021 June 2019 Summary of June 4, 2019, Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Extend the Test Interval for Safety Relief Valves ML19149A3312019-05-31031 May 2019 Summary of Teleconference with Exelon Generation Company, LLC, Regarding Submittal of a Potential License Amendment Request Related to the Implementation of TSTF-500, DC Electrical Rewrite - Update to TSTF-360 ML19114A2642019-04-30030 April 2019 Summary of Meeting with Exelon Generation Company, LLC Regarding Submittal of a Potential License Amendment Request Related to Replacement of Buried Electrical Cables at Peach Bottom Atomic Power Station, Units 2 and 3 ML19036A8832019-02-0707 February 2019 Summary of Meeting with Exelon Generation Company, LLC Regarding a Planned Request to Use ASME Code Case N-879 ML18354B1712019-01-0202 January 2019 Summary of December 19, 2018, Meeting with Exelon Generation Company, LLC Regarding the Use of Boiling Water Reactor Vessel and Internals Project Guidelines ML18325A1712018-11-28028 November 2018 Summary of Meeting with Exelon Generation Company, LLC Regarding Planned Fleet License Amendment Request to Revise Technical Specifications for High Radiation Areas ML18297A1722018-10-26026 October 2018 Summary of Meeting with Exelon Generation Company, LLC Regarding Planned License Amendment Request to Adopt TSTF-427 ML18299A0292018-10-24024 October 2018 10/24/2018 Summary of Teleconference with the Fws Regarding Endangered Species Act Section 7 for Peach Bottom Subsequent License Renewal ML18289A5092018-10-18018 October 2018 09/25/2018 Summary of Meeting for Environmental Review of Peach Bottom Atomic Power Station, Units 2 and 3, Subsequent License Renewal Application ML18268A0632018-10-0303 October 2018 Summary of Meeting with Exelon Generation Company, LLC Regarding Submittal of Potential License Amendment Request Related to High Pressure Service Water System at Peach Bottom Atomic Power Station, Units 2 and 3 ML18229A1222018-09-17017 September 2018 Summary of Meeting with Exelon Generation Company, LLC Regarding the Response to the 2nd Round of Request for Additional Information (RAI) Questions at Peach Bottom Atomic Power Station, Units 2 and 3 (Pbaps) ML18152A9862018-06-12012 June 2018 Summary of May 31, 2018, Meeting with Exelon Generation Company, Llc Regarding the Potential License Amendment Request to Increase the Number of Power Level Steps for the Use of Lefms at Peach Bottom Atomic Power Station, Units 2 and 3 (PBA ML18151A1632018-06-0404 June 2018 Summary of Peach Bottom Annual Assessment Meeting and Attendee List ML18120A1772018-05-0101 May 2018 Summary of Meeting with Exelon Generation Company, LLC Regarding Draft Guidance for Emergency Response Organization Staffing ML18065A8362018-03-0707 March 2018 Summary of February 27, 2018, Meeting with Exelon Generation Company, LLC Planned Fleet License Amendment Request to Relocate Staff Qualification Requirements from TSs to the Quality Assurance Topical Report ML18058A5232018-03-0101 March 2018 Summary of February 26, 2018, Meeting with Exelon Generation Company, LLC Regarding Proposed Alternative to the Main Steam Isolation Valve Testing Requirements ML18044A1632018-02-20020 February 2018 01/18/2018 Summary of Pre-Application Meeting with Exelon Corporation Regarding the Peach Bottom, Units 2 and 3, Subsequent License Renewal Application ML17275A5222017-10-16016 October 2017 09/19/2017, Summary of Meeting with Exelon Regarding Peach Bottom, Units 2 and 3 Subsequent License Renewal Application ML17173A7672017-07-28028 July 2017 Summary of 6/20/2017 Meeting with Entergy to Discuss Plan for Decommissioning Licensing Actions of Palisades, Pilgrim, Indian Point, Units 2 and 3, and Vermont Yankee ML17184A0092017-07-10010 July 2017 Summary of June 29, 2017, Meeting with Exelon Generation Company, LLC, on Proposed Changes to Emergency Plans to Revise Emergency Action Levels (CAC Nos. MF9779-MF9801) ML17153A1052017-06-0202 June 2017 May 3, 2017, Summary of Annual Assessment Meeting for Peach Bottom Atomic Power Station Held ML16228A0622016-08-15015 August 2016 Summary of July 26, 2016, Public Meeting on Status of Associated Effects Submittals Related to the Reevaluated Flood Hazards at Exelon Generation Company, LLC Sites as Part of the Response to Near-Term Task Force Recommendation 2.1, Floodin ML16119A3572016-05-10010 May 2016 Summary of Meeting Held with Exelon Generation Company, LLC, to Discuss a Potential Future Measurement Uncertainty Recapture Power Uprate License Amendment Request for Peach Bottom Atomic Power Station, Units 2 and 3 ML16103A1882016-04-12012 April 2016 Summary of Public Meeting Re Peach Bottom Atomic Power Station, Units 2 and 3 ML16085A3292016-04-0606 April 2016 Summary of March 22, 2016, Meeting with Exelon Generation Company, LLC, on Proposed License Amendment Request to Adopt ANSI 3.1-2014 Operating Training Standards ML16035A1762016-02-11011 February 2016 Summary of January 7, 2016, Meeting with Exelon Generation Company, LLC on It'S Planned Fleet License Amendment Request to Revise the Minimum Staffing Requirements for Emergency Response (CAC Nos. MF7162 - MF7183) 2023-09-22
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LICENSEE: Exelon Generation Company, LLC FACILITY: Peach Bottom Atomic Power Station, Unit 2
SUBJECT:
SUMMARY
OF CLOSED MEETING HELD ON MARCH 26, 2015, WITH EXELON GENERATION COMPANY, LLC TO DISCUSS STEAM DRYER ANALYSIS FOR PEACH BOTTOM ATOMIC POWER STATION, UNIT NO. 2 (TAC NO. MF4792)
On March 26, 2013, a closed meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC (Exelon, the licensee). The meeting was held at the Nuclear Energy Institute office located at 11921 Rockville Pike, Rockville, Maryland.
The purpose of the meeting was for Exelon and Westinghouse Electric Company LLC (Westinghouse) to present information regarding a proposed revision to the steam dryer analysis methodology for Peach Bottom Atomic Power Station (PBAPS), Unit 2. The proposed change in methodology was requested in Exelon's letter dated February 3, 2015, as supplemented by letter dated March 24, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML15034A573 and ML15083A559, respectively).
The meeting notice and agenda, dated March 20, 2015, are available in ADAMS at Accession No. ML15079A315. A list of attendees is provided in the Enclosure. The licensee's handout, presented at the meeting, contains proprietary information and is not publicly available.
Background
On August 25, 2014, the NRC issued Amendment Nos. 293 and 296 to Renewed Facility Operating License Nos. DPR-44 and DPR-56 for PBAPS, Units 2 and 3 (ADAMS Accession No. ML14133A046). These amendments authorized an increase in the maximum licensed thermal power level for PBAPS, Units 2 and 3, from 3514 megawatts thermal (MWt) to 3951 MWt, which is an increase of approximately 12.4 percent. This change in power level is considered an extended power uprate (EPU).
The NRC staff approval of the EPU was based, in part, on the capability for the licensee to monitor, evaluate, and take prompt action in response to potential adverse flow effects as a result of EPU operation on plant structures, systems, and components (including verifying the continued structural integrity of the replacement steam dryer (RSD)). License condition 2.C(15) was added to the facility operating license for each unit, as part of the EPU amendment, to provide the necessary requirements associated with potential adverse flow effects. This license
condition requires, in part, that the licensee benchmark the RSD stress analysis methodology using data collected at or near 3514 MWt. This benchmarking effort establishes the PBAPS Unit 2 RSD strain limits that will be used as acceptance criteria for power ascension above 3514 MWt. The license condition also requires that the methodology for establishing the RSD strain limits not be made less restrictive without prior NRC approval.
Exelon implemented the EPU during the fall 2014 refueling outage for PBAPS Unit 2. Since about mid-December 2014, PBAPS Unit 2 has been holding at about 3514 MWt (89% of the current licensed power level of 3951 MWt, or 100% of the pre-EPU license power level) as part of the RSD benchmarking effort. As described in Exelon's letter dated February 3, 2015, RSD strain gauge measurements, collected near 3514 MWt, identified strain responses in the low frequency range that were not previously predicted. As a result, the licensee developed an approach to quantify the magnitude of the unpredicted loads and integrate the results into the original methodology. In accordance with PBAPS Unit 2 license condition 2.C(15)(d)3, Exelon's letter requested NRC approval for this revision to the methodology for establishing the RSD strain limits.
During review of the revision to the methodology the NRC staff requested additional information from Exelon. The request for additional information (RAI) contained 10 questions. Exelon provided supplemental information in a letter dated March 24, 2015, to respond to the first 9 questions. The focus of the meeting was to discuss the remaining open items as delineated in the remaining RAI question.
Meeting Discussion Exelon presented information intended to demonstrate that the analysis, using the revised methodology, shows that the RSD will perform acceptably at full EPU conditions. The licensee provided details to justify why the approach should be considered acceptable. The discussion included a number of reasons why the approach is conservative.
The NRC staff discussed concerns regarding the revised methodology. Specifically, the staff considers that the technical approach involves approximations which need further validation. As such, the staff had requested additional information to request the licensee to use a revised approach to better estimate the stresses at full EPU conditions. The licensee indicated it would take several weeks to respond to this request.
The NRC staff made no decision during the meeting regarding the acceptability of the methodology. However, the staff said it would consider allowing PBAPS Unit 2 to continue power ascension to 104% of 3514 MWt, based on the conservatisms in the methodology. The staff indicated that a response to the remaining request for additional information question was needed. The NRC staff stated it would let Exelon know by March 30, 2015, of its decision on further power ascension.
Please direct any inquiries to me at 301-415-1420, or Rick.Ennis@nrc.gov.
Richard 8. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-277
Enclosure:
List of Attendees cc w/encl: Distribution via Listserv
LIST OF ATTENDEES MARCH 26, 2015. CLOSED MEETING WITH EXELON GENERATION COMPANY. LLC PEACH BOTTOM ATOMIC POWER STATION. UNIT 2 STEAM DRYER ANALYSIS Name Organization Rick Ennis NRC Mike Breach NRC Kamal Manely NRC Yli NRC JLubinski NRC JU hie NRC John Rommel Exelon Ken Ainger Exelon Scot Greenlee Exelon David Neff Exelon Ron Janowiak Exelon Dave Helker Exelon Mike Massaro Exelon Paul Rau Exelon Stephen Minnick Exelon Karen Fujikawa Westinghouse Leslie Wellstein Westinghouse Greqory Meyer Westinqhouse Terry Rudek Westinghouse Jim Brennan Westinghouse Thomas Carter Westinqhouse Robert Mercer Westinghouse David Suddaby Westinghouse Steve Hambric NRC Contractor - Penn State Vik Shah NRC Contractor - Arqonne National Laboratory Samir Ziada NRC Contractor - McMaster University Fred Bower* NRC Sam Hansell* NRC Brad Fuller* PA Department of Environmental Protection
ML15091A134 OFFICE LPL 1-2/PM LPL 1-2/LA EMCB/BC(A) DE/SLA LPL 1-2/BC LPL 1-2/PM NAME REnnis ABaxter YLi KManolv DBroaddus REnnis DATE 04/01/2015 04/15/2015 04/15/2015 04/15/2015 04/16/2015 04/16/2015