ML25171A041
| ML25171A041 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 06/25/2025 |
| From: | Michael Ziolkowski NRC/RGN-III/DRSS/MIB |
| To: | Tony Brown Vistra Operations Company |
| References | |
| IR 2025501 | |
| Download: ML25171A041 (1) | |
Text
Sincerely, Michael E. Ziolkowski, Chief Security, Emergency Preparedness, and Incident Response Branch Division of Radiological Safety and Security Docket No. 05000346 License No. NPF-3
Enclosure:
As stated cc w/ encl: Distribution via LISTSERV June 25, 2025 Terry Brown Site Vice President Vistra Operations Company, LLC Davis-Besse Nuclear Power Station 5501 N. State Route 2 Mail Stop A-DB-3080 Oak Harbor, OH 43449-9769
SUBJECT:
DAVIS-BESSE NUCLEAR POWER PLANT - EMERGENCY PREPAREDNESS BIENNIAL EXERCISE INSPECTION REPORT 05000346/2025501
Dear Terry Brown:
On May 16, 2025, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at Davis-Besse Nuclear Power Plan and discussed the results of this inspection with you 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.
Signed by Ziolkowski, Michael on 06/25/25
ML25171A041 Entire Report:
SUNSI Review Non-Sensitive Sensitive Publicly Available Non-Publicly Available OFFICE RIII/DRSS RIII/DRSS NAME JKutlesa:dc MZiolkowski DATE 06/25/2025 06/25/2025
Enclosure U.S. NUCLEAR REGULATORY COMMISSION Inspection Report Docket Number:
05000346 License Number:
NPF-3 Report Number:
05000346/2025501 Enterprise Identifier:
I-2025-501-0004 Licensee:
Vistra Operations Company, LLC Facility:
Davis-Besse Nuclear Power Plan Location:
Oak Harbor, OH Inspection Dates:
May 12, 2025, to May 16, 2025 Inspectors:
J. Dalzell, Technical Assistant J. Kutlesa, Sr. Emergency Preparedness Inspector T. McGowan, Emergency Preparedness Inspector B. Towne, Senior Resident Inspector Approved By:
Michael E. Ziolkowski, Chief Security, Emergency Preparedness, and Incident Response Branch Division of Radiological Safety and Security
2
SUMMARY
The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting an emergency preparedness biennial exercise inspection at Davis-Besse Nuclear Power Plan, 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.
3 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 71114.01 - Exercise Evaluation Inspection Review (IP Section 02.01-02.11) (1 Sample)
(1)
The inspectors observed the biennial exercise and evaluated emergency plan performance on May 13, 2025. The exercise scenario simulated an event at the Davis-Besse Nuclear Power Station that initiated with the declaration and notification of an Alert in response to a Loss of Coolant event caused by high vibrations resulting in a failure of a reactor coolant pump. The scenario conditions simulated the escalation of the significance of the event, requiring the declaration of a Site Area Emergency and a General Emergency which was communicated to the required state and local government agencies.
71114.08 - Exercise Evaluation - Scenario Review Inspection Review (IP Section 02.01 - 02.04) (1 Sample)
(1)
The inspectors reviewed and evaluated the proposed scenario for biennial emergency plan exercise on April 22, 2025.
OTHER ACTIVITIES - BASELINE 71151 - Performance Indicator Verification The inspectors verified licensee performance indicators submittals listed below:
EP01: Drill/Exercise Performance (DEP) Sample (IP Section 02.12) (1 Sample)
(1)
April 1, 2024, through March 31, 2025 EP02: Emergency Response Organization (ERO) Drill Participation (IP Section 02.13)
(1 Sample)
(1)
April 1, 2024, through March 31, 2025
4 EP04: Emergency Response Facility and Equipment Readiness (ERFER) (IP Section 02.14)
(1 Sample)
(1)
January 1, 2025, through March 31, 2025 INSPECTION RESULTS No findings were identified.
EXIT MEETINGS AND DEBRIEFS The inspectors verified that no proprietary information was retained or documented in this report.
On May 16, 2025, the inspectors presented the emergency preparedness biennial exercise inspection results to Terry Brown and other members of the licensee staff.
5 DOCUMENTS REVIEWED Inspection Procedure Type Designation Description or Title Revision or Date Miscellaneous N/A Davis-Besse Nuclear Power Station Emergency Response Organization (ERO) 04/23/2025 DBNPS Emergency Plan Davis-Besse Nuclear Power Station Emergency Plan 38 71114.01 Procedures DBRM-EMER-1500A Davis-Besse Emergency Action Level Basis Document 10 71114.08 Miscellaneous L-25-022 Davis-Besse Nuclear Power Station 2025 Emergency Preparedness Evaluated Exercise Manual 03/12/2025 DBBP-EMER-0002 NRC Performance Indicator Data, Emergency Preparedness (ERO Drill Participation) 04/01/2024 -
03/31/2025 DBBP-EMER-0003 NRC Performance Indicator Data, Emergency Preparedness (Alert and Notification System Reliability) 04/01/2024 -
12/31/2024 DBBP-EMER-0004 NRC Performance Indicator Data, Emergency Preparedness (Drill/Exercise Performance) 04/01/2024 -
03/31/2025 71151 Procedures DBBP-EMER-0008 NRC Performance Indicator Data, Emergency Preparedness (ERFER) 01/01/2025 -
03/31/2025