ML25118A244
| ML25118A244 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/28/2025 |
| From: | Division of Operating Reactors |
| To: | |
| References | |
| Download: ML25118A244 (1) | |
Text
Millstone Units 2 & 3 2024 Annual Assessment Meeting Reactor Oversight Process Nuclear Regulatory Commission Region I April 30, 2025 ML25118A244
Agenda
- Opening Remarks
- 2024 Millstone Reactor Oversight Process (ROP) Assessment Summary
- Q&A 2
Overall Assessment Millstone Units 2 and 3 were operated safely in 2024 and continue to operate safely today 3
Inspection and Oversight
- Three full-time residents assigned to Millstone Justin Fuller Dominic Antonangeli Earl Bousquet Senior Resident Resident Inspector Resident Inspector 4
Reactor Oversight Process 5
- Baseline Inspection Program
- Minimum level of inspection conducted at all facilities regardless of their performance.
- Reactive Inspections (e.g., Special Inspections)
- Events involving reactor facilities are investigated in a timely, objective, systematic and technically sound manner.
- Supplemental Inspections (e.g., IP 95001)
- Applies NRC inspection resources in a graded manner when risk-significant performance issues are identified.
6 Types of Inspections
7 Increasing Safety Significance Increasing NRC Inspection Efforts Increasing NRC/Licensee Management Involvement Increasing Regulatory Actions Licensee
Response
Regulatory
Response
Degraded Performance Multiple/Repetitive Degraded Cornerstone Unacceptable Performance Action Matrix Concept
Millstone Units 2 & 3 2024 Assessment Summary Operated safely and in a manner that preserved the public health and safety and protected the environment Licensee Response Column Regulatory Response Column April 11, 2024, to July 11, 2024 9495 hours0.11 days <br />2.638 hours <br />0.0157 weeks <br />0.00361 months <br /> of inspection and related activities Green Performance Indicators 11 Green Findings and 4 Severity Level IV Violations A Greater-Than-Green finding and Greater-Than-Severity Level IV violation in the Security cornerstone 8
Safety Culture Cross-Cutting Aspects No Human Performance concerns 2024 Problem Identification and Resolution (PI&R) Inspection No SCWE concerns Allegations 3 allegations in 2024 (National Avg. = 3)
Resident inspectors and regional staff are highly accessible and take all allegation matters seriously 9
Millstone Finding Summary - 2024
- Security Cornerstone Greater-than-Green Finding and Greater-than-Severity Level IV Violation
- Special Inspection Report, November 16, 2023 (ML24010A182)
- Special Inspection Follow-up Report and Choice Letter, April 25, 2024 (ML24116A045)
- Final Significance Determination and Notice of Violation, May 2, 2024 (ML24123A204)
- Supplemental Inspection Report, August 6, 2024 (ML24219A016)
- Unit 2 CST Trench Aging Management
- NCV 05000336/2024001-01, Failure to Implement Structures Monitoring, Infrequently Accessed Areas, and Buried Piping Aging Management Programs for the Condensate Storage Tank (CST) Pipe Trench 10
Millstone Power History - 2024 11 Date Unit Cause January 9, 2024 3
Unplanned Downpower - Feedwater Leak Repair September 4, 2024 3
Planned Maintenance Outage - Pressurizer Safety Relief Valve Replacement October 4, 2024 2
Refueling Outage November 14, 2024 2
Unplanned Downpower - Switchyard Repair
Millstone Licensee Event Reports - 2024 Event Date Unit Topic Status October 20, 2023 3
Pressurizer power operated relief valve failed to open during surveillance testing resulting in a condition prohibited by Technical Specifications Closed (Inspection Report 2024004)
April 14, 2024 2
Control room air conditioning unit inoperable due to refrigerant overcharge resulting in a condition prohibited by Technical Specifications Closed (Inspection Report 2024002)
August 21, 2024 3
Loss of safety function and condition prohibited by Technical Specifications for loss of secondary containment boundary Closed (Inspection Report 2024004)
October 1, 2024 2
Two main steam safety valves failed to lift within the acceptance criteria resulting in a condition prohibited by Technical Specifications Open October 10, 2024 3
Door latch failure resulted in loss of safety function for secondary containment boundary Closed (Inspection Report 2024004) 12
Office of Public Affairs Diane Screnci Diane.Screnci@nrc.gov 610-337-5330 13
NRC Social Media Channels
- Facebook www.facebook.com/nrcgov
- Twitter twitter.com/nrcgov
- YouTube www.youtube.com/user/NRCgov
- Instagram www.instagram.com/nrcgov
- Flickr www.flickr.com/photos/nrcgov/sets
- LinkedIn www.linkedin.com/company/u-s--nuclear-regulatory-commission/mycompany/
- GovDelivery service.govdelivery.com/accounts/USNRC/subscriber/new 14
More Information
- Inspection Reports
- https://www.nrc.gov/reactors/operating/oversight/listofrpts-body.html
- Reactor Oversight Process
- https://www.nrc.gov/reactors/operating/oversight.html
- Fact Sheets and Brochures
- https://www.nrc.gov/reading-rm/doc-collections/fact-sheets/
- NRC Information Digest
- https://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr1350/
- Regulations
- https://www.nrc.gov/reading-rm/doc-collections/cfr/
15
Annual Assessment Meeting Feedback Ways to submit feedback:
- Scan QR Code
- Visit https://feedback.nrc.gov/pmfs/ and enter the meeting number
- Visit the NRC Public Meeting Schedule after the meeting and click the Meeting Feedback Form link Meeting number: 20250469 16
Questions and Answers 17
18 This Ends the Meeting Thank You for Attending