ML16354A329

Outgoing Letter Seabrook License Amendment Request on Concrete Degradation

ML16354A329
Person / Time
Site:	Seabrook
Issue date:	12/19/2016
From:	Dennis Bley Advisory Committee on Reactor Safeguards
To:	Lochbaum D Union of Concerned Scientists
References
Download: ML16354A329 (2)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, DC 20555 - 0001 December 19, 2016 Mr. David A. Lochbaum Director, Nuclear Safety Project Union of Concerned Scientists P.O. Box 15316 Chattanooga, TN 37415

Dear Mr. Lochbaum,

Thank you for your letter of December 14, 2016, concerning the NextEra Energy Seabrook LLC license amendment request to revise its Safety Analysis Report to include methods for analyzing seismic Category I structures with concrete affected by an alkali-silica reaction (ASR).

We first began to examine the ASR issue during our subcommittee meeting for Seabrook license renewal on July 10, 2012. Since then we have had technical briefings and visited NIST, where research on ASR is being performed. We expect to continue following the work on ASR.

The Committee has not yet decided if we can address all the technical issues through currently planned reviews or if further activities will be needed.

Sincerely,

/RA/

Dennis C. Bley Chairman

December 19, 2016 Mr. David A. Lochbaum Director, Nuclear Safety Project Union of Concerned Scientists P.O. Box 15316 Chattanooga, TN 37415

Dear Mr. Lochbaum,

Thank you for your letter of December 14, 2016, concerning the NextEra Energy Seabrook LLC license amendment request to revise its Safety Analysis Report to include methods for analyzing seismic Category I structures with concrete affected by an alkali-silica reaction (ASR).

We first began to examine the ASR issue during our subcommittee meeting for Seabrook license renewal on July 10, 2012. Since then we have had technical briefings and visited NIST, where research on ASR is being performed. We expect to continue following the work on ASR.

The Committee has not yet decided if we can address all the technical issues through currently planned reviews or if further activities will be needed.

Sincerely,

/RA/

Dennis C. Bley Chairman PACKAGE Accession No: ML16354A236 Publicly Available Y Sensitive N Viewing Rights: NRC Users or ACRS Only or See Restricted distribution OFFICE ACRS SUNSI Review ACRS NAME ADVeil ADVeil ADV for DCB DATE 12/19/16 12/19/16 12/19/16 OFFICIAL RECORD COPY