ML26014A240
| ML26014A240 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/14/2026 |
| From: | James Park NRC/RGN-III/DORS/ERPB |
| To: | Mudrick C Constellation Energy Generation |
| References | |
| IR 2026010 | |
| Download: ML26014A240 (0) | |
See also: IR 05000455/2026010
Text
Christopher H. Mudrick
Senior Vice President
Constellation Energy Generation, LLC
President and Chief Nuclear Officer (CNO)
Constellation Nuclear
200 Energy Way, KSA-3N
Kennett Square, PA 19348
SUBJECT:
BYRON STATION, UNIT 2, REQUEST FOR INFORMATION FOR NRC
POST-APPROVAL SITE INSPECTION FOR LICENSE RENEWAL, PHASE 2,
INSPECTION REPORT 05000455/2026010
Dear Christopher H. Mudrick:
On May 18, 2026, the U.S. Nuclear Regulatory Commission (NRC) will begin a
Post-Approval Site Inspection for License Renewal, Phase 2, at Byron Station, Unit 2. This
inspection will be performed in accordance with NRC Inspection Procedure (IP) 71003. This
inspection will focus on verifying that license conditions added as part of your renewed
license and a sample of license renewal commitments have been implemented.
To minimize the inspection impact on the site and to ensure a productive inspection for
both parties, we have enclosed a request for information needed for the inspection. It is
important that all these documents are up-to-date and complete to minimize the number of
additional documents requested during the preparation and/or the on-site portions of the
inspection. Information should be provided electronically. This information request has been
divided into two groups:
The first group lists information necessary for our initial inspection scoping and in-office
preparation activities. During the in-office preparation activities, the inspector will
identify as much as possible the information and activities to be reviewed during the
inspection. This information should be provided to the inspector by April 13, 2026.
The second group includes the additional information required for the inspector to review
the selected activities. This information should be available to the inspector 1 week
before arriving onsite or May 11, 2026. It is also requested that corrective action
documents and/or questions developed during the inspection be provided to the
inspector as the documents are generated.
The lead inspector for this license renewal inspection is Joon Park. We understand that our
primary contact for this inspection is Gerald Armstrong of your organization. If there are any
questions about the inspection or the material requested in the enclosure, please contact
the lead inspector at 630-829-9715 or via email at Joon.Park@nrc.gov.
January 14, 2026
C. Mudrick
2
This letter does not contain new or amended information collection requirements subject to the
Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection
requirements were approved by the Office of Management and Budget, Control
Number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
respond to, a request for information or an information collection requirement unless the
requesting document displays a currently valid Office of Management and Budget Control
Number.
This letter and its enclosure 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, Part 2.390, Public Inspections,
Exemptions, Requests for Withholding.
Sincerely,
Joon S. Park
Engineering and Reactor Projects Branch
Division of Operating Reactor Safety
Docket No. 50-455
License No. NPF-66
Enclosure:
Document Request for Post-Approval
Site Inspection for License Renewal
cc: Distribution via LISTSERV
Signed by Park, Joon
on 01/14/26
C. Mudrick
3
Letter to Christopher H. Mudrick from Joon S. Park dated January 14, 2026.
SUBJECT:
BYRON STATION, UNIT 2, REQUEST FOR INFORMATION FOR NRC
POST-APPROVAL SITE INSPECTION FOR LICENSE RENEWAL, PHASE 2,
INSPECTION REPORT 05000455/2026010
DISTRIBUTION:
RidsNrrDorlLpl3
RidsNrrPMByron Resource
RidsNrrDroIrib Resource
R3-DORS
ADAMS Accession Number: ML26014A240
Publicly Available
Non-Publicly Available
Sensitive
Non-Sensitive
OFFICE
RIII
NAME
JPark:gmp
DATE
01/14/2026
OFFICIAL RECORD COPY
DOCUMENT REQUEST FOR POST-APPROVAL SITE INSPECTION FOR LICENSE RENEWAL
Enclosure
Inspection Report: 05000455/2026010
Inspection Dates:
May 18, 2026 - June 5, 2026
Inspection Procedures:
IP 71003 Post-Approval Site Inspection for License Renewal
Phase 2
Lead Inspector:
Joon S. Park
Senior Reactor Inspector
DORS/ERPB
630-829-9715
Joon.Park@nrc.gov
I.
Information Requested Prior to the Inspection Preparation Week
The following information is requested by April 13, 2026, or sooner, to facilitate
inspection preparation. If you have any questions regarding this information, please
contact the team leader. (Please provide the information electronically in PDF files,
Excel, or other searchable formats, preferably on station/corporate online portal for
document sharing. The electronic information should be identified by unit, contain
descriptive names, and be indexed and hyperlinked to facilitate ease of use.
Information in lists should contain enough information to be easily understood by
someone who has knowledge of light-water reactor technology.)
1.
Provide a list of your license renewal commitments with an approximate completion
status of each.
2.
Provide a list of your Aging Management Programs (AMPs), copies of associated
program basis documents, and a listing of the action tracking items for each.
3.
For AMPs that are one-time inspection programs, provide a list of completed work
order numbers for inspections that have been completed. This may be incorporated
with the previous item and should include identification of the inspected component.
4.
Provide current management and license renewal organizational charts.
5.
Provide electronic copies of any internal/external self-assessments and associated
corrective action documents generated in preparation for the inspection.
II.
Information Requested to Be Available One Week Prior to Inspectors Arrival
On-Site, or May 11, 2026
1.
Documentation demonstrating completion of license renewal commitments
completed as of the inspection date. For example, this may be in the form of a binder
for each commitment which includes the implementing documentation and
references.
DOCUMENT REQUEST FOR POST-APPROVAL SITE INSPECTION FOR LICENSE RENEWAL
2
III.
Information Requested to Be Provided Throughout the Inspection
1.
Copies of any corrective action documents generated from inspector questions or
queries during this inspection.
2.
Copies of the list of questions submitted by the team members and the
status/resolution of the information requested (provide daily during the inspection to
each team member).
If you have any questions regarding the information requested, please contact the lead
inspector.