Annual Assessment Meeting for Seabrook Station - NRC Presentation Slides| ML22130A128 |
| Person / Time |
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| Site: |
Seabrook  |
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| Issue date: |
05/10/2022 |
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| From: |
NRC/RGN-I/DORS |
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| To: |
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| Young M |
| References |
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| Download: ML22130A128 (22) |
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[Table view] |
Text
Seabrook Station Annual Assessment Meeting Welcome!
This meeting will start at 5:30pm.
Seabrook Station Annual Assessment Meeting Reactor Oversight Process - 2021 May 12, 2022 2
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.
4
Agenda - Seabrook Dan Collins Director, Region I Division of Operating Reactor Safety
- 2021 ROP Plant Performance Assessment and Inspection Activities
- NRC Inspection of Alkali-Silica Reaction (ASR)
- Public Question and Answer Session 5
NRC Panelists Chris Newport Travis Daun Nik Floyd Sr. Resident Inspector Resident Inspector Senior Inspector Mel Gray Matt Young Engineering Branch Chief Branch Chief 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
- operator performance in the simulator
- 2021 Team Inspections
- 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
NRC Inspection of ASR at Seabrook
- 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
- 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/
15
Annual Assessment Meeting Feedback
- 1. Mail in NRC 2. Scan QR Code on feedback form that - OR - back of form with will be emailed to smart device all attendees
- 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.
16
- OR -
- 4. Email Public Affairs - opa1.resource@nrc.gov 16
Question & Answer Session Question & Answer Session 17
Thank you for your participation
REFERENCE SLIDES NextEra Methodology for ASR Methodology Document Structural Analysis & Evaluation Monitoring Parameters and Limits Structures Monitoring Program Corrective Action 20
Reactor Cavity Diagram N West East Wall Wall Deck Keyway Grate /
Wall Floor Slab Opening Reactor Cavity Pit Overhead View Containment Side View 21
Structural Modification Examples Example 1 - Example 2 -
Strong backs Corner Braces 22