ML24351A217
| ML24351A217 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 12/16/2024 |
| From: | Hambly A Constellation Energy Generation |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML24351A216 | List: |
| References | |
| RS-24-132 | |
| Download: ML24351A217 (1) | |
Text
Constellation RS-24-132 December 16, 2024 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20055 Braidwood Station, Units 1 and 2 4300 Winfield Road Warrenville, IL 60555 630 657 2000 Office 10 CFR 50.4(b)(6) 10 CFR 50.71(e) 10 CFR 54.37(b)
Renewed Facility Operating License Nos. NPF-72 and NPF-77 NRC Docket Nos. STN 50-456, STN 50-457 and 72-73
Subject:
Byron Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-37 and NPF-66 NRC Docket Nos. STN 50-454, STN 50-455 and 72-68 Updated Final Safety Analysis Report (UFSAR), Revision 20 Updated Fire Protection Report (FPR), Amendment 31 In accordance with the requirements of 10 CFR 50.71, "Maintenance of records, making of reports,"
paragraph (e)(4), Constellation Energy Generation, LLC (CEG) submits Revision 20 to the Updated Final Safety Analysis Report (UFSAR), Amendment 31 to the Fire Protection Report (FPR) for Braidwood and Byron Stations (BRW-BYR), and Aging Management summary of evaluations conducted pursuant to 10 CFR 54.37, "Additional records and record keeping requirements,"
paragraph (b).
The enclosed BRW-BYR UFSAR Revision 20 is being provided to the NRC in electronic format on the Electronic Information Exchange (EIE) and is being submitted in its entirety, constituting total replacement copies. Also enclosed in electronic format on EIE, is the BRW-BYR Fire Protection Report (FPR), Amendment 31, Braidwood Technical Requirements Manuals (TRM) updated through Revision 120, Byron TRM updated through Revision 141, Braidwood Technical Specifications Bases (TSB) updated through Revision 149, and Byron TSB updated through Revision 130. UFSAR pages changed as a result of this update are delineated with "Revision 20, December 2024" in the page footer. FPR pages changed as a result of this update are delineated with "Amendment 31, December 2024" in the page header.
Changes to the UFSAR, FPR, TRM and TSB have been made under the provisions of 10 CFR 50.59, "Changes, tests, and experiments," 10 CFR 72.48, "Changes, tests, and experiments,"
and 10 CFR 54.37(b) "Additional records and recordkeeping requirements."
Attachment A provides a brief summary of the changes incorporated into UFSAR Revision 20.
Attachment B provides a brief summary of the changes incorporated into FPR Amendment 31.
Attachment C provides the 10 CFR 54.37(b) Aging Management Review Summary.
Attachment D contains the directory path, filename, and size of each individual file.
RS-24-132 December 16, 2024 U. S. Regulatory Commission Page 2 As required by 10 CFR 50.71(e)(2)(i), I certify that to the best of my knowledge, the information contained in the Enclosures and Attachments to this letter accurately reflect information and analyses submitted to the NRC or prepared pursuant to NRC requirements, and changes made under the provision of 10 CFR 50.59 and 10 CFR 72.48.
There are no commitments made in this document. Should you have any questions concerning this letter, please contact:
Amy Hambly Constellation - Licensing Programs 4300 Winfield Road Warrenville, IL 60555 E-Mail: amy.hambly@constellation.com Respectfully, Kevin Lueshen Director - Licensing Constellation Energy Generation, LLC Attachments: A - Draft Revision Packages (DRPs) Incorporated into BRW-BYR Stations Updated Final Safety Analysis Report, Revision 20 B - Fire Documentation Revision Packages (FDRPs) Incorporated into BRW-BYR Stations Fire Protection Report, Amendment 31 C - 10 CFR 54.37(b) Aging Management Review Summary D - BRW-BYR Electronic File Directory Structure
Enclosures:
001 - EIE, BRW-BYR UFSAR, Revision 20 002 - EIE, BRW-BYR FPR, Amendment 31 003 - EIE, BRW TRM 004 - EIE, BYR TRM 005 - EIE, BRW TSB 006 - EIE, BYR TSB cc:
Regional Administrator - NRC Region III NRC Senior Resident Inspector - Braidwood Station NRC Senior Resident Inspector - Byron Station NRC Project Manager - NRR - Braidwood Station NRC Project Manager - NRR - Byron Station NRC Region III - Library Lueshen, Kevin Digitally signed by Lueshen, Kevin Date: 2024.12.16 15:18:05 -06'00'
Attachment A Draft Revision Packages (DRPs) Incorporated into Byron/Braidwood Stations Updated Final Safety Analysis Report - Revision 20 Page 1 of 3 DRP 18-001 & DRP 18-002 - Revised UFSAR Section 10.2.2.2 to reflect main exciter description to indicate that the generator exciter will be controlled by a digital AVR equipped with two redundant channels per EC 624258 and EC 624259 for Braidwood Unit 1 & 2.
DRP 18-026 - Revised UFSAR pages E.75-18 entry H to support replacement of TSC System under EC 630258 for Byron.
DRP 19-057 and 19-059 - Revised UFSAR Section 7.1.2.6 to reflect the changes to actuation logic relays from "de-energize to actuate" to "energize to actuate" for loss of power to the FRVs in accordance with EC 633286 & 630538 for Braidwood Unit 1 and 2.
DRP 19-065, DRP 19-066, DRP 20-039, and DRP 20-040 - Revised UFSAR Sections 10.2.2.3 and 10.4.7.2 to include description of the design change that automates several functions by utilizing the Ovation Distributed Control System (DCS) to monitor feed water pump status, automatically initiate a turbine load reduction (runback), automatically start the standby condensate/condensate booster pumps, and apply temporary limits to certain feed water regulating valves when reduced to a single feed water pump per EC 633143, EC 630851 and EC 634801 for Braidwood and Byron.
DRP 19-068 - Revised UFSAR Sections 9.4.9.1.1 and 9.4.9.1.2 to reflect modified 48-inch main VQ System main purge duct work segments in accordance with EC 634575, Braidwood Unit 2.
DRP 19-069 - Revised UFSAR Section 9.4.9.3.2 to reflect that high filter differential pressure, high charcoal filter temperature are annunciated in the main control room per EC 634571, Braidwood Unit 1 & 2 DRP 19-074 - Revised UFSAR Section 9.3.1.2 to reflect replacement of the Unit 2 Station air compressor at Braidwood Station in accordance with a Braidwood EC 630881, Unit-2.
DRP 19-080 - Revised UFSAR Section 10.4.6.2.2.1 that each vessel contains approximately 280 ft^3 of resin." These ratios are approximations and flexible based on Chemistry needs, the total amount of resin will be denoted in order to remove confusion and excessive detail about the resin amounts used for Byron and Braidwood. (Non-Regulatory change)
DRP 19-082 - Revised UFSAR Section 9.5.4.2 to revise the textual reference to a specific numerical volume of stored diesel fuel to state that a 7-day supply of stored diesel fuel is maintained per Technical Specifications. This change is implemented in accordance with a Byron and Braidwood Technical Specification Amendment 230.
DRP 20-035 - Revised UFSAR Table 5.3-2 and Appendix F to reflect removal of License Renewal Commitment to Repair Stud Hole 35 on the Reactor Vessel Main Flange in accordance with an NRC approved license amendment 229 for Braidwood Unit 2.
DRP 20-036 and DRP 20-042 - Revised UFSAR section 9.3.4.1.2.5 to reflect a change in the boration flow rate from 30 gpm to 33 gpm per Westinghouse BORDER analysis for Braidwood and Byron.
Attachment A Draft Revision Packages (DRPs) Incorporated into Byron/Braidwood Stations Updated Final Safety Analysis Report - Revision 20 Page 2 of 3 DRP 20-037 - Revised UFSAR Sections 5.3.1.5.1, 5.3.1.6.2, 5.3.2.1, 5.3.4 and UFSAR Table 5.3-9 to allow use of an alternative methodology to determine reactor coolant system pressure-temperature limits at Braidwood Station Unit 1. The changes were approved by the NRC via Safety Evaluation for License Amendment dated 9/18/2020 and Safety Evaluation for Exemption dated 8/31/2020.
DRP 20-044 - Revised UFSAR Sections 9.1.3.1, 9.1.3.2, 9.1.3.3, and Table 3.2-1 to reflect the downgrading of safety class of some fire protection lines in the auxiliary building for Braidwood per EC 637092.
DRP 20-045 - Revised UFSAR Appendix A Regulatory Guide 1.133 and section 4.4.6.4.4 to remove Loose Parts Detection System from Reg Guide 1.133 per Topical Report (PA-LSC-1612 R2: Loose Parts Monitor Removal from Licensing Basis) for Braidwood.
DRP 20-046 - Revised UFSAR section 10.D.1.2 to revise wording from 'Technical Specification 3.7.5 requires monthly surveillances" to "Technical Specification requires periodic surveillances in accordance with the surveillance frequency control program" for Byron and Braidwood DRP 20-047 - Updated UFSAR Section 6.2.6.1 to ensure correct version of ANSI/ANS 56.8-2002 and NEI 94-01 rev 3A, where referenced for Byron and Braidwood.
DRP 20-049 - Revised UFSAR Table 4.1-1 Item 63 Typical Split Enrichment Zone range from 4.30 to 4.95 w/o for Byron and Braidwood per EC 633854, EC 631106, EC 628269, EC 619556, EC 632350.
DRP 20-050 - Updated UFSAR Section 15 for corrected AST Dose Analyses (LOCA, FHA, CREA, LRA, MSLB, SGTR) per EC 628627 and EC 628628 for Byron and Braidwood.
DRP 20-051 - Updated UFSAR Section EQ Zone Table 3.11-2 based on radiation changes on core loading per EC 638684 and EC 635803 for Byron and Braidwood.
DRP 20-053 - Updated UFSAR Figure 4.3-6 Burnable Absorber Loading Pattern (typical) per EC 635571 for Byron and Braidwood.
DRP 20-054 - Revised UFSAR Table 5.1-1 to change pressurizer heater capacity from 1709kW to 1686kW due to pressurizer heater 36 being abandoned per EC 639353 for Braidwood Unit 2.
DRP 20-055 - Updated UFSAR Section 3.7.3.14 to include wording for Vantage+ fuel and included WCAP-17392-P as reference to section 3.7.5 for Byron and Braidwood.
DRP 20-058 - Updated UFSAR Appendix F to include Option 2 for Byron and Braidwood Unit 1 is supported by License Renewal submittal to NRC (ML23110A124) and included Option 3 for LR commitment #10 in UFSAR Appendix F which is supported by EC 639394 & 639395 and is for Byron and Braidwood Unit 2 only.
Attachment A Draft Revision Packages (DRPs) Incorporated into Byron/Braidwood Stations Updated Final Safety Analysis Report - Revision 20 Page 3 of 3 DRP 20-060 - Updated UFSAR Section 7.7.1.7 description of the redundant digital valve controllers with lockup feature installed under ECs 638350 for Braidwood Unit 1 only. Corrected Figure 7.7-6 legacy errors associated with the SGWLCS for Byron and Braidwood.
DRP 20-061 - Updated UFSAR Appendix F to include Periodic inspection plan is to be implemented since the aging degradation mechanism was found (UFSAR A.2.1.21 - Selective Leaching) for Byron only.
DRP 20-063 - Updated UFSAR Table 3.9-16 active valve table to include valve(s) 1/2SX007 supported by EC 641455 is for Byron only.
DRP 20-064 - Corrected typo and format during the incorporation of DRP 17-026 Section 9.4.1.2.g, h, i, & j for Braidwood and Byron. (non-regulatory change)
Attachment B Fire Documentation Revision Packages (FDRPs)
Incorporated into Braidwood/Byron Stations Fire Protection Report - Amendment 31 (2024)
Page 2 of 2 FDRP 31-005 - Updated 2.3 Fire Area Analysis, section 2.3.3.6 to reclassify a portion of the FP system at Byron that was conservatively classified as Safety Category 1, Quality group C (ASME Section III class 3) and imposes unnecessary requirements. This change reflects and update that was not incorporated under FDRP 29-001 although identified. (Byron)
FDRP 31-008 - Updated Table 3.1 NFPA Code Deviation Report. Change Adds deviations for the motor driven and diesel driven fire pump sensing lines and piping size. The sensing lines shares a common connection with the jockey pumps. The sensing lines have a portion of piping that is 3/4 inch in size. (Braidwood)
FDRP 31-013 - Updated Section 2.3.6 to correct typo referencing section 2.3.11.35 instead of section 2.3.11.36 (Byron / Braidwood)
FDRP 31-015 - Updated Table 3.1 NFPA Code Deviation Report. Change Adds deviations for the motor driven and diesel driven fire pump sensing lines and piping size. The sensing lines shares a common connection with the jockey pumps. The sensing lines have a portion of piping that is 3/4 inch in size. (Byron)
Updated Section 5.4 Figures to current station revisions (Byron / Braidwood)
Page 1 of 1 Attachment C Braidwood and Byron Stations 10 CFR 54.37(b) Aging Management Review Summary In accordance with 10 CFR 54.37(b) and the guidance specified in Regulatory Issue Summary 2007-16, Revision 1, Implementation of the Requirements of the 10 CFR 54.37(b) for Holders of Renewed Licenses, the UFSAR update required by 10 CFR 50.71 must include any Structures, Systems or Components (SSCs) newly identified that would have been subject to an aging management review or evaluation of time-limited aging analyses in accordance with 10 CFR 54.21. This UFSAR update must describe how the effects of aging will be managed such that the intended function(s) in 10 CFR 54.4(b) will be effectively maintained during the period of extended operation.
The 10 CFR 54.37(b) review of changes to the plant Current Licensing Basis covered the period of November 14, 2022 to October 7, 2024. The review included:
x Engineering Changes that were installed or completed since the last UFSAR update, x
UFSAR change descriptions since last review, and x
NRC Interim Staff Guidelines (ISGs) and other NRC documentation not previously evaluated that could potentially require Aging Management Reviews (AMRs) for SSCs not evaluated during license renewal.
No newly identified SSCs were identified that require aging management or evaluation of TLAAs in accordance with the License Renewal Rule. Therefore, there are no associated updates required to the Braidwood and Byron UFSARs and Aging Management Programs.
ATTACHMENT D Byron/Braidwood Station Electronic File Directory Structure Page 1 of 1
Directory Path File Name File Size USAR C:\\BRW-BYR UFSAR REV 20 001 BRW-BYR UFSAR, Revision 20.pdf 204 MB FIRE PROTECTION REPORT C:\\BRW-BYR UFSAR REV 20 002 BRW-BYR FPR, Amendment 31.pdf 227 MB TECHNICAL REQUIREMENTS MANUAL C:\\BRW-BYR UFSAR REV 20 003 BRW TRM.pdf 100 MB C:\\BRW-BYR UFSAR REV 20 004 BYR TRM.pdf 2.82 MB TECHNICAL SPECIFICATIONS BASES C:\\BRW-BYR UFSAR REV 20 005 BRW TSB.pdf 4.92 MB C:\\BRW-BYR UFSAR REV 20 006 BYR TSB.pdf 5.20 MB