IR 05000454/2025010
| ML25063A123 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 03/04/2025 |
| From: | Karla Stoedter NRC/RGN-III/DORS/RPB3 |
| To: | Rhoades D Constellation Energy Generation |
| References | |
| IR 2025010 | |
| Download: ML25063A123 (1) | |
Text
SUBJECT:
BYRON STATION - COMMERCIAL GRADE DEDICATION REPORT 05000454/2025010 AND 05000455/2025010
Dear David Rhoades:
On February 14, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Byron Station and discussed the results of this inspection with Harris Welt and other members of your staff. The results of this inspection are documented in the enclosed report.
No findings or violations of more than minor significance were identified during this inspection.
This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.
Sincerely, Karla K. Stoedter, Technical Support Team Leader Technical Support Staff Division of Operating Reactor Safety Docket Nos. 05000454 and 05000455 License Nos. NPF-37 and NPF-66
Enclosure:
As stated
Inspection Report
Docket Numbers:
05000454 and 05000455
License Numbers:
Report Numbers:
05000454/2025010 and 05000455/2025010
Enterprise Identifier:
I-2025-010-0038
Licensee:
Constellation Energy Generation, LLC
Facility:
Byron Station
Location:
Byron, IL
Inspection Dates:
January 27, 2025, to February 14, 2025
Inspectors:
B. Jose, Senior Reactor Inspector
J. Park, Reactor Inspector
M. Siddiqui, Reactor Inspector
R. Walden, Observer
Approved By:
Karla K. Stoedter, Technical Support Team Leader
Technical Support Staff
Division of Operating Reactor Safety
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting a commercial grade dedication at Byron Station, in accordance with the Reactor Oversight Process. The Reactor Oversight Process is the NRCs program for overseeing the safe operation of commercial nuclear power reactors. Refer to https://www.nrc.gov/reactors/operating/oversight.html for more information.
List of Findings and Violations
No findings or violations of more than minor significance were identified.
Additional Tracking Items
None.
INSPECTION SCOPES
Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2515, Light-Water Reactor Inspection Program - Operations Phase. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.
REACTOR SAFETY
===71111.21N.03 - Commercial Grade Dedication The inspectors reviewed the implementation of the licensees processes for dedicating commercial-grade items/services as basic components and/or for procuring safety-related structures, systems, and components for the following samples:
Commercial Grade Dedication===
(1)9322-2, Actuator Diaphragm (Commercial Grade Item (CGI) Dedication)
(2)20345-2, Elapsed Time Meter (CGI Dedication)
(3)21408-1, Pressure Relief Valve (Safety-Related (SR) Procurement)
(4)27447-1, Relief Valve (SR Procurement)
(5)43170-2, Nickel Cadmium Battery (CGI Dedication)
(6)44273-2, Dodge Para-Flex Flexible Coupling Element (CGI Dedication)
(7)45055-2, Pressure Switch (CGI Dedication)
(8)1020214-2, Thermostat (CGI Dedication)
(9)1231517-2, 1 Micro Farad Paper Capacitor (CGI Dedication)
(10)1389732-2, Resistance Temperature Detector (CGI Dedication)
(11)1391566-2, Exhaust Manifold Gasket (CGI Dedication)
(12)1411414-2, MOV Long Life Grease (CGI Dedication)
(13)1704481-2, Flexible Hose (CGI Dedication)
(14)1812109-1, Struthers-Dunn Relay (SR Procurement)
(15)1827887-2, Rebuilt Kit for Fuel Injector (CGI Dedication)
INSPECTION RESULTS
No findings were identified.
EXIT MEETINGS AND DEBRIEFS
The inspectors verified no proprietary information was retained or documented in this report.
- On February 14, 2025, the inspectors presented the commercial grade dedication results to Harris Welt and other members of the licensee staff.
DOCUMENTS REVIEWED
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
00143983
0B Service Water Makeup Pump Engine Oil Resistance
Temperature Detector Vibration
2/11/2003
04163892
Cell 16 for 2AF01EA Battery Bank Failed Testing
08/13/2018
04388828
Diesel Fuel Delivery Refused Due to Biodiesel Content
2/08/2020
04408125
Part 21 - SF-1154 Hydraulic Fluid Batch 17BLVS293
03/11/2021
04416216
NOS ID: CGD Critical Characteristic Not Marked
Accept/Reject
04/13/2021
04432445
Incorrect O-Ring Material Installed
06/30/2021
04488118
Conditional Release as PIT Required for
SX M/U Diesel Filter
03/29/2022
04563489
Gaps in 1B AF Work Package Instructions
03/20/2023
Corrective Action
Documents
04832110
Admin Errors in Procurement Engineering Evals
01/24/2025
04834343
NRC Found Procedure with Incorrect Information
01/31/2025
04836807
NRC Identified Injector Reinstall on 1B AF Pump
Undocumented
2/12/2025
Corrective Action
Documents
Resulting from
Inspection
04836810
NRC ID: CGD Questions Related to Flexible Coupling
Element
2/12/2025
BYR 11239
PE for Pressure Switch, Catalog ID 45055-2
07/10/2001
BYR 40556
PE for 1 Micro Farad Paper Capacitor,
Catalog ID 1231517-2
07/01/2005
BYR 51052
PE for Relief Valve, Catalog ID 27447-1
06/23/2006
BYR 5437
PE for Nickel Cadmium Battery, Catalog ID 43170-2
03/22/2000
BYR 58879
PE for Elapsed Time Meter, Catalog ID 20345-2
10/09/2007
BYR 70602
PE for Resistance Temperature Detector for
Safety-Related Service Water Makeup Pump
Engine Oil Temperature, Cat ID 1389732-2
11/10/2010
EXL 100905
PE for Flexible Hose, Catalog ID 1704481-2
2/27/2017
EXL 277444
Procurement Evaluation (PE) for Safety-Related
Struthers Dunn Relay, Catalog ID 1812109-1
04/11/2023
EXL 51071
PE for Relief Valve, Catalog ID 27447-1
06/23/2006
EXL 98291
PE for Thermostat, Catalog ID 1020214-2
2/24/2017
71111.21N.03
Engineering
Evaluations
M-94-0716-00
PE for Flexible Coupling Element, Catalog ID 44273-2
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
PE 19590
PE for Actuator Diaphragm, Catalog ID 9322-2
10/07/2002
PE 19592
PE for Actuator Diaphragm, Catalog ID 9322-2
10/07/2002
PE 277654
PE for Injector Rebuild Kit, Catalog ID 1827887-2
01/24/2023
PE 284923
PE for Pressure Relief Valve, Catalog ID 21408-1
08/24/2023
PE 5144
PE for Flexible Coupling Element, Catalog ID 44273-2
03/14/2000
PE 66053
PE for Exhaust Manifold Gasket, Catalog ID 1391566-2
07/10/2009
PE 66661
PE for Exhaust Manifold Gasket, Catalog ID 1391566-2
09/17/2009
PE 9106478
PE for MOV Long Life Grease, Catalog ID 1411414-2
01/22/2025
TE-96-039
Change Oper Diaphragm Material to Silicone for
RY455A/456
244554
Receipt Inspection Package for Nickel Cadmium Battery,
Catalog ID 43170-2
2/21/2018
259471
Receipt Inspection Package for Industrial Controls
Resistance Temperature Detector, Catalog ID 1389732-2
08/05/2019
259471
Receipt Inspection Package for Industrial Controls
Resistance Temperature Detector, Catalog ID 1389732-2
08/05/2019
265787
Receipt Inspection Package for Flexible Coupling
Element, Catalog ID 44273-2
03/17/2020
266084
Receipt Inspection Package for Exhaust Manifold Gasket,
Catalog ID 1391566-2
03/23/2020
274711
Receipt Inspection Package for Pressure Switch,
Catalog ID 45055-2
04/22/2021
284994
Receipt Inspection Package for 1 Micro Farad Paper
Capacitor, Catalog ID 1231517-2
09/15/2022
288830
Receipt Inspection Package for Pressure Relief Valve,
Catalog ID 21408-1
01/10/2023
288930
Receipt Inspection Package for Thermostat,
Catalog ID 1020214-2
01/11/2003
289566
Receipt Inspection Package for MOV Long Life Grease,
Catalog ID 1411414-2
2/06/2023
289622
Receipt Inspection Package for Injector Rebuild Kit,
Catalog ID 1827887-2
2/08/2023
Miscellaneous
289799
Receipt Inspection Package for Flexible Hose,
Catalog ID 1704481-2
2/14/2023
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
293577
Receipt Inspection Package for Elapsed Time Meter,
Catalog ID 20345-2
06/13/2023
299946
Receipt Inspection Package for Actuator Diaphragm,
Catalog ID 9322-2
03/21/2024
303849
Receipt Inspection Package for Relief Valve,
Catalog ID 27447-1
D-446-0029
Vender Service Manual: Detroit Diesel Series 149 Engine
GC-2022-15
NUPIC Commercial Grade Item Survey
Checklist - Rolls Royce Solutions America, Inc.
09/01/2022
NUPIC 25393
NUPIC Audit of NWS Technologies, LLC
2/14/2023
Post Maintenance Testing
Approved Supplier Qualification Activities
Commercial Grade Surveys
PES-S-002
Shelf Life
Procurement Engineering Support Activities
Procedures
Procurement Engineering Process and Responsibilities
01860688-01
Replace AF Diesel Fuel Injectors
03/09/2023
04761261
Electrical Maintenance Replace Batteries for
2BAF Bank A Battery
07/19/2018
04922780
Replace All Capacitors in 1DC03E
10/29/2022
05058297
0A Service Water Makeup Pump Indication Failed
07/16/2020
05089627-01
MM: 2AF01PB-K Exhaust Bolt
11/12/2020
05151998
0B Service Water Makeup Pump Engine Water
Temperature Indicating High
09/03/2021
206840
Verify 125 Vdc Battery Charger 211 Normal Parameters
2/16/2024
237710-01
1AF0PB Perform Prime Mover Inspection (OPCCW)
03/28/2023
250157
Preventive Maintenance for Auxiliary Feed Water
Diesel Engine
10/16/2023
275678
2B AF Diesel Driven Pump Flexible Hoses Replacement
10/31/2023
05347238
1SI8855C IST Relief Valve Test
09/21/2024
05347330
Replace Actuator Diaphragm
09/16/2024
05358014
Low Speed Service Water Fan Oil Pressure Low
04/26/2023
Work Orders
05524011
4160V Essential Switchgear Vent Fan Run Time
08/06/2024
Inspection
Procedure
Type
Designation
Description or Title
Revision or
Date
Meter Not Increasing