ML18136A482

Annual Assessment Meeting 05-02-2018 Presentation

ML18136A482
Person / Time
Site:	Seabrook
Issue date:	05/02/2018
From:	NRC Region 1
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Shared Package
ML18109A014	List: ML18109A015 ML18136A482 ML18136A860
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Download: ML18136A482 (11)

Text

Seabrook Annual Assessment Meeting Hampton, NH May 2, 2018

NRC Staff

• Blake Welling, Deputy Director, DRS Region I

• Mel Gray, Branch Chief, DRS - Region I

• Brian Wittick, Branch Chief, NRR

• Justin Poole, Project Manager, NRR

• Pete Meier, NRC Resident Inspector 05/02/2018 2

AGENDA

• 2017 Safety Performance Overview

• NRC Inspections of ASRimpacted concrete

• ASR License Amendment Request

• License Renewal Status

• Question and Answer Session

• Closing Remarks 05/02/2018 3

Seabrook 2017 Safety Performance Overview

• Operated safely and in a manner that preserved public health and safety

• 6,500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> of inspection and related activities

• 6 green findings

• All green performance indicators

• Licensee Response Column 05/02/2018 4

NRC Inspections of ASRimpacted Concrete What is ASR?

• In 2010, ASR was identified in localized areas of Seabrook concrete structures

• ASR is a chemical reaction in concrete, which occurs over time in the presence of water, between the alkaline cement and reactive silica found in some aggregates.

• ASR forms a gel that expands causing micro cracks that effect concrete material properties 05/02/2018 5

NRC Inspections of ASRimpacted Concrete Inspection Summary

• NRC specialist inspections completed every six months; last performed in March 2018

• License renewal inspection is being conducted this week to followup on the open item related to ASR 05/02/2018 6

ASR License Amendment Request (LAR)

• In August 2016, NextEra submitted an LAR to revise the current licensing basis requested approval of a methodology to analyze seismic category I concrete structures

• Application currently under NRC staff review:

- Audit process opened in January 2017

- Staff site visit in June 2017

- Requests for Additional Information (RAIs) Issued on August 4 and October 11, 2017

- Responses to RAIs received on Oct. 3 and Dec. 11, 2017

- Public Meetings held August 24 and November 17, 2017 05/02/2018 7

ASR License Amendment Request (LAR)

• Application currently under NRC staff review (continued):

- 2nd Staff site visit in March 2018

- DRAFT RAIs sent on April 18, 2018

- Staff DRAFT safety evaluation in August 2018

- Final safety evaluation following fall Advisory Committee on Reactor Safeguards Public Meetings

- Atomic Safety and Licensing Board Hearing to occur following final safety evaluation 05/02/2018 8

License Renewal Application (LRA)

Review Status

• NextEra submitted a license renewal application (LRA) in June 2010

• Safety review remains ongoing; NRC decision on the application has not been finalized

• Reasonable assurance that aging effects of ASR on concrete can be adequately managed is needed

• Remaining schedule milestones:

• IP 71002 Inspections - May 2018

• Staff Safety Evaluation Report - August 2018

• ACRS Subcommittee and Full Committee meetings 05/02/2018 9

Licensing Review Timeline (RENEWED LICENSE) ACRS LRA LRA LRA Meetings LRA Submitted Updated SER (LRA) Final SE (CURRENT LAR LAR LAR 2019 LICENSE) Submitted Draft SE Final SE hearing on LAR 2010 Aug 2016 Aug 2018 Fall 2018 Dec 2018 2019 05/02/2018 10

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• Web: http://www.nrc.gov/

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

• Twitter: https://twitter.com/#!/nrcgov

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

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

• Questions?

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