ML22130A128
| ML22130A128 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 05/10/2022 |
| From: | Division of Operating Reactors |
| To: | |
| Young M | |
| References | |
| Download: ML22130A128 (22) | |
Text
Seabrook Station Annual Assessment Meeting Welcome!
This meeting will start at 5:30pm.
Reactor Oversight Process - 2021 May 12, 2022 2
Seabrook Station Annual Assessment Meeting
Seabrook Annual Assessment Meeting Meeting Facilitator Brett Klukan Regional Counsel, Region I 3
Meeting Conduct
- Please respect other members of the public
- Please be conscious of your speaking time
- Questions will be addressed during the Question-and-Answer session following the presentation.
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Agenda - Seabrook Dan Collins Director, Region I Division of Operating Reactor Safety 2021 ROP Plant Performance Assessment and Inspection Activities Current NRC COVID-19 response NRC Inspection of Alkali-Silica Reaction (ASR)
Public Question and Answer Session 5
Travis Daun Resident Inspector Chris Newport Sr. Resident Inspector Nik Floyd Senior Inspector Mel Gray Engineering Branch Chief Matt Young Branch Chief NRC Panelists 6
NRC Independent Safety Inspections Reactor Oversight Process
- Full-time NRC resident inspectors
- NRC specialists conduct additional inspections at each nuclear plant
- NRC inspectors have unfettered access to all plant activities related to nuclear safety and security 7
NRC Independent Safety Inspections Action Matrix Concept 8
2021 ROP Plant Performance Assessment at Seabrook
- Operated safely and in a manner that preserved the public health and safety and protected the environment
- All Green Performance Indicators
- All Very Low Safety Significance Findings
- The plant will receive the baseline level of inspection in 2022 9
2021 NRC Inspection Activities at Seabrook
- ~6000 hours of inspection and related activities
- Examples of Resident Inspections maintenance activities surveillance tests operator performance in the simulator emergency preparedness drills
- 2021 Team Inspections Design Basis Assurance Security Radiation Protection Evaluation of Modifications (50.59)
Refueling Outage Activities 10
NRC Actions in Response to COVID-19
- Monitored plant activities through inspections and oversight
- Maintained emergency response capabilities within Regional Incident Response Centers and NRC HQ
- NRC resident inspectors currently full time on-site 11
In 2021, the NRC completed inspections to assess NextEras performance to manage the effects of ASR in Seabrook structures
- ASR inspections completed in each quarter
- Resident inspectors and specialists from Region I and NRC Headquarters involved
- Focused on compliance with NRC-approved methodology and license conditions NRC inspections in 2021 determined Seabrook structures remain capable of performing their safety functions NRC inspectors identified two findings of very low safety significance 12 NRC Inspection of ASR at Seabrook
NRC Inspection of ASR at Seabrook
- 2Q2021 - Finding related to not adequately accounting for future ASR trends in operability determinations
- 4Q2021 - Finding related to not properly evaluating ASR-related indications in the Containment Internal Structure per the Structures Monitoring Program 13
Seabrook Annual Assessment Meeting Closing Remarks 14
NRC Social Media Channels Facebook: www.facebook.com/nrcgov Flickr:
www.flickr.com/photos/nrcgov/
Twitter:
twitter.com/#!/nrcgov YouTube: www.youtube.com/user/NRCgov RSS:
www.nrc.gov/publicinvolve/listserver.html#rss LinkedIn:
www.linkedin.com/company/u-s--nuclearregulatory-commission/
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Annual Assessment Meeting Feedback
- 1. Mail in NRC feedback form that will be emailed to all attendees
- OR -
- 2. Scan QR Code on back of form with smart device
- OR -
- 3. At any computer, go to the Public Meeting Schedule and press the Meeting Feedback link for this meeting - or - press the
[more] link for this meeting and then press the Meeting Feedback link on the Meeting Details page.
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- OR -
- 4. Email Public Affairs - opa1.resource@nrc.gov
Question & Answer Session Question & Answer Session 17
Thank you for your participation
REFERENCE SLIDES
NextEra Methodology for ASR 20 Methodology Document Structural Analysis & Evaluation Monitoring Parameters and Limits Structures Monitoring Program Corrective Action
Reactor Cavity Diagram 21 N
East Wall West Wall Keyway Wall Opening Deck Grate /
Floor Slab Reactor Cavity Pit Overhead View Containment Side View
Structural Modification Examples 22 Example 1 -
Strong backs Example 2 -
Corner Braces