SBK-L-12098, NextEra Energy Seabrook Ltr. Dtd 5/3/12 Seabrook Station Actions for Resolution of Alkali Silica Reaction (ASR) Issues

NextEra Energy Seabrook Ltr. Dtd 5/3/12 Seabrook Station Actions for Resolution of Alkali Silica Reaction (ASR) Issues

ML12125A022
Person / Time
Site:	Seabrook
Issue date:	05/03/2012
From:	Freeman P NextEra Energy Seabrook
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
SBK-L-12098
Download: ML12125A022 (6)

Text

May 3,2012 SBK-L- 12098 Docket No. 50-443 U.S. Nuclear Regulatory Commission Attention: Document Control Desk One White FlintNorlh 11555 Rockville Pike Rockville, MD 20852 Seabrook Stalion Actions for Resolution of Alkali Silica Reaction (ASR) Issues

Reference:

1. Public Meeting between NextEra Energy Seabrook and the U.S. Nuclear Regulatory Commission, April 23, 2012 (MLl 2 1 070659).

During the above referenced meeting, NextEra Energy Seabrook, LLC (NextEra Energy Seabrook), committed to the U.S. Nuclear Regulatory Commission (NRC) to provide a list of actions it is taking to resolve ASR issues at Seabrook Station.

NextEra Energy Seabrook will take the following action to resolve ASR at Seabrook Station

l. Revise the prompt operability determination (POD) associated with AR581434581434 'Reduced 6(8!'

Concrete Properties Below Grade in Electrical Tunnel Exterior Wall,' by June 30, 20t2.

Z. Revise the POD associated with AR1664399, 'Reduced Concrete Modulus of Elasticity Below Grade in Containment Enclosure Building, RHR Equipment Vaults, EFW Punp House, and Diesel Generator Fuel Oil Storage Rooms,'by June 30,2012.

3. Complete short term aggregate expansion testing (ASTM C 1260 Mortar Bar Expansion Test) by June 30 2012, Resutts will be available to the NRC approximately 30 days after testing is complete.

4. Complete long term aggrcgate expansion testing (ASTM C 1293 Concrete Prism Test) by June 30, 2013. Results will be available to the NRC approximately 30 days after testing is complete.

5. Submit the root cause and conective actions for the occurl'ence of ASR at Seabrook Stationby May 25,2012.

NextEra Energy Seabrook, LLC, P.O. Box 300, Lafayette Road, Seabrook, NH 03874

United States Nuclear Regulatory Commission SBK-L-12098/Page2

6. Submit the License Renewal Aging Management Program for ASR-affected structures by May 25,2012.

7. Submit the evaluation of the impact of ASR on concrete structures and attachments at Seabrook Station by May 25,20t2.

8. Submit an ASR integrated corrective action plan by June 8, 2012.

9. Submit the technical details of the testing planned at the contracted research and development facility by June 3Q,2Q12.

10. Update the Maintenance Rule Structures Monitoring Program to include monitoring requirements for selected locations in areas that exhibit ASR by July 15,2012.

11. Perform six-month interval crack measurements and crack indexing at 20 locations in areas that exhibit the highest crack indices by July 15,2012'

12. Complete anchor test program by December 3I,2012.

The dates identified above reflectNexlEra's cunent plans and are subject to change based upon testing conditions and other considerations. In the event that a date changes, NextEra will noti$'

the NRC in writing.

Regulatory commitnents are listed in the attachment to this letter.

If you have any questions regarding this conespondence, please contact Mr. Michael O'Keefe, Licensing Manager, at (603) 773-7745' Sincerely, NextEra Energy Seabrook, LLC

&a.4 Paul O. Freeman Site Vice President

United States Nuclear Regulatory Commission SBK-L-l2098lPage 3 cc:

W.M. Dean, NRC Region I Administrator J, G. Lamb, NRC Project Manager, Project Directorate I-2 W. J. Raymond" NRC Resident Inspector A.D. Cunanan, NRC Project Manager, License Renewal M. Wentzel, NRC Project Manager, License Renewal IW, Christopher M. PoPe Director Homeland Security and Emergency Management New Hampshire Department of Safety Division of Homeland Security and Emergency Management Bureau of EmergencY Management 33 Hazen Drive Concord, NH 03305 John Giamrsso, Jr., Nuclem Prepmedness Manager The Commonwealth of Massachusetts Emergency Management AgencY 400 Wotcester Road Framingham, MA 017 02-5399

Attachment to SBK-L-12098 List of Regulatory Commitments

Commitment Commitment Completion Number Date SBK-L-12098-01 Revise the prompt operability determination (POD) June30,2012.

associated with AR581434581434 'Reduced Concrete Properties Below Grade in "B" Electrical Tunnel Exterior Wall.'

sBK-L-12098-02 Revise the POD associated with AR1664399, June 30, 2012.

'Reduced Concrete Modulus of Elasticity Below Grade in ContainmentEnclosure Building, RHR Equipment Vaults, EFW Pump House, and Diesel Generator Fuel Oil Storage Rooms.'

SBK-L-12098-03 Complete short term aggregate expansion testing June 30 2012.

(ASTM C 1260 Mortar Bar Expansion Test). Rezults will be available to the NRC approximately 30 days after testing is complete.

SBK-L12098-04 Complete long term ag$egate expansion testing Jrxre 30 2012.

(ASTM C L293 Concrete Prism Test). Results will be available to the NRC approximately 30 days after testing is complete.

sBKd-12098-05 Submit the root cause and corrective actions for the MLay25"2012.

occurrsnce ofASR at Seabrook Station.

SBK-L-12098-06 Submit the License Renewal Aging Managemenl May25,2012.

Program for ASR-affected structures.

SBK-L-12098-07 Submit the evaluation of the impact of ASR on May 25,2012.

concrete structures and attachments at Seabrook Station.

Commitment Commitment Completion Number Date SBK-L-12098-08 Submit an ASR integrated conective action plan. June 8,2012.

SBK-L-12098-09 Submit the technical details of the testing plarured at June 30,2012.

the contracted research and development facility.

SBK-L-12098-10 Update the Maintenance Rule Structures Monitoring JuLy 15,2412.

Program to include monitoring requirements for selected locations in areas that exhibit ASR.

SBK.L-12098-1 I Perform six-month interval crack measurements and July 15,20L2.

crack indexing at 20 locations in areas that exhibit the highest crack indices.

SBK-L-12098-12 Complete anchor test progmm. December 31,2012.