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 InspectorResident 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 w ith NRC-approved methodology and license conditions
- NRC inspections in 2021 determined Seabrook structures remain capable of performing their safety functions
- NRC inspectors identified tw o 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/
- Tw itter: tw itter.com/#!/nrcgov
- YouTube: www.youtube.com/user/NRCgov
- RSS: w ww.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 smar t 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