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Category:E-Mail
MONTHYEARML24012A0492024-01-11011 January 2024 Request for Additional Information Regarding Final Response to Generic Letter 2004-02 ML23317A2012023-11-22022 November 2023 (External_Sender) Supplement - Byron Security Rule Exemption Request ISFSI Docket No. Reference ML23331A8922023-11-22022 November 2023 Supplement - Braidwood Security Rule Exemption Request ISFSI Docket No. Reference ML23321A2012023-11-17017 November 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Proposed Alternative for Examination of Pressurizer Circumferential and Longitudinal Shell-to-Head Welds and Nozzle-to-Vessel Welds (L-2023-LLR-0062) ML23312A1302023-11-0707 November 2023 Final Rci/Rai - Constellation R. E. Ginna Nuclear Power Plant - Exemption from Security Rule (EPID L-2023-LLE-0029) (Email) ML23311A1682023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections (L-2023-LLR-0053 and L-2023-LLR-005 ML23311A1692023-11-0707 November 2023 NRR E-mail Capture - Constellation - Fleet Request - Acceptance of Proposed Alternative for Examinations of Exam Categories B-B, B-D, and C-A SG Pressure Retaining Welds and Full Penetration Welded Nozzles (L-2023-LLR-0055 and L-2023-LLR-00 ML23305A2992023-11-0101 November 2023 NRR E-mail Capture - NRC Acceptance Review of Byron, Unit 2, Relief Request I4R-24 ML23304A0222023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Braidwood 1 & 2 - Exemption from Security Rule (L-2023-LLE-0030) ML23304A0202023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Byron 1 & 2 - Exemption from Security Rule (L-2023-LLE-0027) ML23304A0152023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Calvert Cliffs 1 & 2 - Exemption from Security Rule (L-2023-LLE-0033) ML23272A0602023-09-29029 September 2023 NRR E-mail Capture - NRC Acceptance Review of Byron, Unit 1, Relief Request I4R-25 ML23187A0092023-07-0606 July 2023 NRR E-mail Capture - NRC Acceptance Review of Byron and Braidwood Request to Adopt TSTF-370 ML23181A0732023-06-30030 June 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs TSTF-59A ML23160A0222023-06-0606 June 2023 NRR E-mail Capture - Calvert Cliffs - Long Term Coupon Surveillance Program RAI ML23156A0102023-06-0404 June 2023 NRR E-mail Capture - Calvert Cliffs - RAI License Amendment Request for Emergency Desiel Generator ML23103A4692023-04-12012 April 2023 NRR E-mail Capture - NRC Acceptance Review of Braidwood Request for Amendment to Revise TS 3.7.9 ML23080A1002023-03-21021 March 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Repair Replacement of Saltwater System Buried Piping ML23080A0672023-03-21021 March 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Unit 1 - LAR to Modify the Long-Term Coupon Surveillance Program ML23069A0332023-03-0606 March 2023 Email to K. Lueshen Byron and Braidwood Commitment 10 - Request for Additional Information Set 1 ML23026A1332023-01-26026 January 2023 NRR E-mail Capture - Acceptance Review for Calvert Cliffs Deletion of License Condition for Decommissioning Trust LAR ML23115A2412023-01-20020 January 2023 NRR E-mail Capture - Preliminary RAIs Related to L-2022-LLA-0131 - Byron, Unit 2, Reinsertion of an Accident Tolerant Fuel Lead Test Assembly ML22354A2622022-12-20020 December 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Request to Use Certain Provisions of the 2019 Edition of the ASME BPV Code, Section XI ML22342B1462022-11-21021 November 2022 NRR E-mail Capture - Acceptance Review for TSTF 295A ML22325A0052022-11-18018 November 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-273-A, Revision 2 ML22284A1022022-10-0606 October 2022 NRR E-mail Capture - NRC Acceptance Review for Byron, Unit 2, License Amendment Request (LAR) to Reinsert an Accident Tolerant Fuel (ATF) Lead Test Assembly (LTA) (L-2022-LLA-0131) ML22339A0032022-09-28028 September 2022 R. E. Ginna Nuclear Power Plant - Ginna: Acceptance Review: to Revise Technical Specifications (TS) TS 5.6.5, Core Operating Limits Report ML22269A4522022-09-22022 September 2022 R. E. Ginna Nuclear Power Plant - Acceptance Review: to Revise Technical Specifications (TS) TS 5.6.5, Core Operating Limits Report (COLR) NRC-2100-2022, EN 55999 Valcor Coil Shell Assemblies Final Notification (004)2022-09-12012 September 2022 EN 55999 Valcor Coil Shell Assemblies Final Notification (004) ML22255A0132022-09-0909 September 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood, Byron, Calvert Cliffs, Ginna - License Amendment Request to Adopt TSTF-577 ML22200A0782022-07-19019 July 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request to Use Honeywell Mururoa V4F1 R Supplied Air Suits NRC 2110-2022, EN 55999 - Valcor Engineering Corporation (009)2022-07-18018 July 2022 EN 55999 - Valcor Engineering Corporation (009) ML22189A0602022-07-0707 July 2022 NRR E-mail Capture - Draft RAI for Byron/Braidwood TSTF-501 ML22136A2722022-05-16016 May 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood and Byron Adoption of TSTF-501 ML22138A1672022-05-16016 May 2022 R. E. Ginna Nuclear Power Plant - Acceptance Review TS to Revise Technical Specifications (TS) for the Spent Fuel Pool Charcoal System and Two (2) TS Administrative Changes (EPID-L-2022-LLA-0057) ML22271A0772022-05-0606 May 2022 NRR E-mail Capture - Final RAIs 9.1.2021 Constellation Relief Request ML22129A0132022-05-0606 May 2022 NRR E-mail Capture - Draft RAIs for Requests for Alternatives I4R-17, I4R-23, ISI-05-018, I6R-10 ML22116A0242022-04-25025 April 2022 NRR E-mail Capture - NRC Acceptance Review of Braidwood, Byron, and Ginna Request to Adopt TSTF-246 ML22105A0722022-04-15015 April 2022 NRR E-mail Capture - Braidwood/Byron Verbal Authorization for Proposed Alternative I4R-15/I4R-21 ML22091A0852022-04-0101 April 2022 NRR E-mail Capture - Braidwood and Byron - Final RAI Regarding Proposed Alternative for Various Pressurizer Welds (EPID L-2021-LLR-0035 and 0036) ML22091A2392022-04-0101 April 2022 NRR E-mail Capture - Calvert Cliffs - Formal RAI for Proposed Alternative for Examinations of Certain Pressurizer Welds ML22091A2402022-03-23023 March 2022 NRR E-mail Capture - (External_Sender) Salem Generating STATION-INCIDENTAL Take of Atlantic Sturgeon Collected on 03/22/2022 ML22075A1912022-03-16016 March 2022 NRR E-mail Capture - Acceptance for Review of Proposed Alternative Repair Method for Buried Class 3 Saltwater System Piping ML22088A1562022-03-0202 March 2022 NRR E-mail Capture - Byron, Braidwood, Calvert Cliffs, and Ginna - Non-acceptance of Application to Revise Technical Specifications 5.6.5.b, the Core Operating Limits Report (COLR) ML22059B0602022-02-28028 February 2022 Change to Review Schedule Regarding Proposed Alternative for Various Pressurizer Welds ML22091A0842022-02-24024 February 2022 NRR E-mail Capture - Braidwood and Byron - Withdrawal of Draft RAI Regarding Proposed Alternative for Various Pressurizer Welds (EPID L-2021-LLR-0035 and 0036) ML22060A0172022-02-23023 February 2022 NRR E-mail Capture - Calvert Cliffs Nuclear Power Plant, Units 1 and 2 - Withdraw of Draft RAI Regarding Proposed Alternative for Various Pressurizer Welds ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML21281A1402022-01-14014 January 2022 Acceptance for Review of Proposed Alternative ISI-05-018 for Examinations of Steam Generator Pressure Retaining Welds and Full Penetration Welded Nozzles ML23089A0152022-01-0505 January 2022 NRR E-mail Capture - NRC Acceptance Review of Byron - Proposed Alternative for Examinations of Categories B-B, B-D, and C-A SG Welds and Nozzles 2024-01-11
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From: Wiebe, Joel Sent: Wednesday, March 2, 2022 8:38 AM To: Henderson, Phillip A:(Exelon Nuclear); Lisa Simpson (Lisa.Simpson@constellation.com)
Subject:
Byron, Braidwood, Calvert Cliffs, and Ginna - Non-acceptance of Application to Revise Technical Specifications 5.6.5, "CORE OPERATING Hi Phil/Lisa, The reasons for non-acceptance are described below. Let me know when you are ready to discuss the two sufficiency items below. LIC-109 requires a conference call within 5 working days of the date of this e-mail.
Joel By letter dated January 24, 2022, Exelon Generation, LLC, proposed to revise the Technical Specifications (TSs) for Braidwood Station, Units 1 and 2, Byron Station, Units 1 and 2, Calvert Cliffs Station, Units 1 and 2, and Ginna Station as necessary to add a reference to the topical report SSP-14-P01/028-TR-P-A, Generic Application of the Studsvik Scandpower Core Management System to Pressurized Water Reactors to TS 5.6.5.b, the Core Operating Limits Report (COLR) references (Agencywide Document Access and Management System (ADAMS)
Package Accession No. ML ML22025A235). On February 1, 2022 (ADAMS Accession No. ML22032A333), Exelon Generation Company, LLC was renamed Constellation Energy Generation, LLC.
The topical report, SSP-14-P01/028-TR-P-A, includes the NRC staffs safety evaluation report that provides generic approval of the CMS5 system of codes, consisting of CASMO5, CMSLINK5, and SIMULATE5. By virtue of the generic approval, the topical report addresses primarily theory, numerics, and qualification, and does not address the plant-specific implementation of these codes, or compliance with an individual plants licensing basis requirements.
The NRCs Standard Review Plan (NUREG-0800), Section 4.3 Nuclear Design covers the areas of review for nuclear design methodologies. Much of the required areas of review have already been addressed during the review of the generic topical report; however, the plant-specific application of the method and incorporation into a plants licensing basis remain to be addressed during the review of the license amendment request (LAR). Specifically, the SRP 4.3 Acceptance Criteria state:
The acceptance criteria in the area of power distribution are that the information presented should satisfactorily demonstrate that:
[]
B. A reasonable probability exists that in normal operation the design limits will not be exceeded, based on consideration of [] the accuracy of design calculations used in developing correlations when primary variables are not directly measured; [and] the uncertainty analyses for the information and processing system []
These acceptance criteria tie directly into GDC 10 and the associated design criteria for pre-GDC plants.
Without the sufficiency items below it is not possible to evaluate whether there is reasonable assurance that GDC 10 would be satisfied.
Sufficiency Items:
In accordance with Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-109, Acceptance Review Procedures for Licensing Basis Changes, the NRC staff performed a review to determine whether the proposed incorporation of SSP-14-P01/028-TR-P-A includes sufficient information to begin a detailed technical review. Using the guidance provided in Appendix B, Guide for Performing Acceptance Reviews, of LIC-109, the NRC staff determined that the proposed license amendment does not contain sufficient information to initiate its review, as described below:
- 1. Completeness of Scope: SSP-14-P01/028-TR-P-A provides generic Nuclear Uncertainty Factors (NUFs) and the associated Nuclear Reliability Factors (NRFs), but also provides a method to calculate plant-specific NUFs. The licensees January 24, 2022, letter does not contain a summary of the analysis used to formulate the NUFs for each unit, including whether generic or plant-specific factors are used.
- 2. Sufficiency of Information: LIC-109 states:
The information provided should support a comparison of the RLA to the licensees existing processes or programs, if applicable, with justification for the change. If significant, obvious problems are identified, the RLA should be considered unacceptable.
The LAR, as submitted, does not contain a description of how SSP-14-P01/028-TR-P-A impacts downstream safety analyses. Please describe what quantities or parameter limits Constellation intends to calculate using CMS5 and explain how they are used in downstream cycle-specific analyses. Also, explain whether SSP-14-P01/028-TR-P-A will replace or supplement the existing methods used by Constellation to generate the COLR for each facility. For each type of quantity that is associated with a regulatory requirement (e.g., to determine local power as input to a critical heat flux calculation),
provide an analysis or evaluation demonstrating that the applicable regulatory requirements (e.g., GDC 10) are satisfied. As an example, a summary that maximum peaking factors predicted for one plant using CMS5 are reasonably comparable to those calculated using the existing methodology, could be an acceptable amount of information to provide.
Hearing Identifier: NRR_DRMA Email Number: 1576 Mail Envelope Properties (MN2PR09MB49714D0C0CCB6FA70E28E8A88B039)
Subject:
Byron, Braidwood, Calvert Cliffs, and Ginna - Non-acceptance of Application to Revise Technical Specifications 5.6.5, "CORE OPERATING Sent Date: 3/2/2022 8:37:54 AM Received Date: 3/2/2022 8:37:00 AM From: Wiebe, Joel Created By: Joel.Wiebe@nrc.gov Recipients:
"Henderson, Phillip A:(Exelon Nuclear)" <Phillip.Henderson@constellation.com>
Tracking Status: None "Lisa Simpson (Lisa.Simpson@constellation.com)" <lisa.simpson@constellation.com>
Tracking Status: None Post Office: MN2PR09MB4971.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 4880 3/2/2022 8:37:00 AM Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: