ML23177A114

Annual Assessment Meeting Reactor Oversight Process 2023

ML23177A114
Person / Time
Site:	Seabrook
Issue date:	06/26/2023
From:	NRC/RGN-I/DORS
To:
References
Download: ML23177A114 (1)

Text

Seabrook Station Annual Assessment Meeting Reactor Oversight Process - 2023 June 27, 2023 1

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.

2

Agenda - Seabrook

• 2022 ROP Plant Performance Assessment and Inspection Activities Ray McKinley

• NRC Inspection of Alkali-Silica Deputy Director, Region I Division Reaction (ASR) of Operating Reactor Safety

• Public Question and Answer 3

NRC Panelists Travis Daun Seamus Flanigan Nik Floyd Sr. Resident Inspector Resident Inspector Senior Engineer Matt Young Mel Gray Engineering Branch Chief Branch Chief 4

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 5

NRC Independent Safety Inspections Reactor Oversight Process 6

2022 ROP Plant Performance Assessment at Seabrook

• 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 2023 7

2022 NRC Inspection Activities at Seabrook

~4000 hours of inspection and related activities

- Examples of Resident Inspections

• maintenance activities

• surveillance tests

• operator performance

• emergency preparedness drills

- 2022 Team Inspections

• Security Baseline

• Design Bases Assurance Inspection

• EP Exercise

• Radiation Protection/Environmental Monitoring

• Problem Identification and Resolution 8

NRC Inspection of ASR at Seabrook

• In 2022, the NRC completed inspections to assess NextEras performance to manage the effects of ASR in Seabrook structures

- Resident inspectors and specialist from Region I and NRC Headquarters involved

- Focused on compliance with NRC-approved methodology and license conditions

• NRC inspections in 2022 determined Seabrook structures remain capable of performing their safety functions

• NRC inspectors identified one finding of very low safety significance

- 2Q2022 finding related to not monitoring through-wall expansion of ASR in required Tier 3 locations 9

Seabrook Annual Assessment Meeting Closing Remarks 10

NRC Social Media Channels

• LinkedIn: www.linkedin.com/company/u-s--nuclear-regulatory-commission/

• Instagram: www.instagram.com/nrcgov

• Facebook: www.facebook.com/nrcgov/

• Flickr: www.flickr.com/photos/nrcgov/

• Twitter: www.twitter.com/#!/nrcgov

• YouTube: www.youtube.com/user/NRCgov

• RSS: www.nrc.gov/public-involve/listserver.html#rss 11

Annual Assessment Meeting Feedback

1. Mail in NRC 2. Scan QR Code on feedback form - OR - 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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For Additional Information Contact a Public Affairs Officer Diane Screnci Sr. PAO 610/337-5330 Diane.screnci@nrc.gov Neil Sheehan PAO 610/337-5331 Neil.sheehan@nrc.gov 13

Q&A Session Question & Answer Session 14

Thank you for your participation

Reference Slides 16

Structural Modification Examples Example 1 - Example 2 -

Strong backs Corner braces 17

Structural Modification Examples 18

Throughwall Expansion Monitoring Expansion Through wall expansion with borehole extensometer 19