ML15287A017

Regulatory Audit Plan - Ferguson Structural Engineering Laboratory Experimental Test Supporting the Alkali Silica Reaction Monitoring Aging Management Program

ML15287A017
Person / Time
Site:	Seabrook
Issue date:	10/20/2015
From:	Plasse R License Renewal Projects Branch 1
To:	Dean Curtland NextEra Energy Seabrook
Plasse R, NRR/DLR,415-1427
References
DLR-15-0477, TAC ME4028
Download: ML15287A017 (7)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 20, 2015 Mr. Dean Curtland Site Vice President NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 03874

SUBJECT:

REGULATORY AUDIT PLAN - FERGUSON STRUCTURAL ENGINEERING LABORATORY EXPERIMENTAL TEST SUPPORTING THE ALKALI SILICA REACTION MONITORING AGING MANAGEMENT PROGRAM, REGARDING SEABROOK STATION, UNIT 1, LICENSE RENEWAL APPLICATION REVIEW (TAC NOS. ME4028)

Dear Mr. Curtland:

By letter, dated May 25, 2010, NextEra Energy Seabrook, LLC (NextEra or the applicant) submitted an application for renewal of operating license No. NPF-86 for the Seabrook Station (Seabrook), Unit 1. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants.

The staff plans to conduct its Aging Management Program regulatory audit of the Ferguson Structural Engineering Laboratory (FSEL) test at the University of Texas, Austin, Texas during the week of October 26, 2015, in accordance with the enclosed regulatory audit plan. If you have any questions, please contact me by telephone at 301- 415-1427 or by e-mail at Richard.Plasse@nrc.gov.

Sincerely,

/RA/

Richard Plasse, Project Manager Reactor Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-443

Enclosure:

Audit Plan cc: Listserv

October 20, 2015 Mr. Dean Curtland Site Vice President NextEra Energy Seabrook, LLC P.O. Box 300 Seabrook, NH 03874

SUBJECT:

REGULATORY AUDIT PLAN - FERGUSON STRUCTURAL ENGINEERING LABORATORY EXPERIMENTAL TEST SUPPORTING THE ALKALI SILICA REACTION MONITORING AGING MANAGEMENT PROGRAM, REGARDING SEABROOK STATION, UNIT 1, LICENSE RENEWAL APPLICATION REVIEW (TAC NOS. ME4028)

Dear Mr. Curtland:

By letter, dated May 25, 2010, NextEra Energy Seabrook, LLC (NextEra or the applicant) submitted an application for renewal of operating license No. NPF-86 for the Seabrook Station (Seabrook), Unit 1. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants.

The staff plans to conduct its Aging Management Program regulatory audit of the Ferguson Structural Engineering Laboratory (FSEL) test at the University of Texas, Austin, Texas during the week of October 26, 2015, in accordance with the enclosed regulatory audit plan. If you have any questions, please contact me by telephone at 301- 415-1427 or by e-mail at Richard.Plasse@nrc.gov.

Sincerely,

/RA/

Richard Plasse, Project Manager Reactor Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-443

Enclosure:

Audit Plan cc: Listserv DISTRIBUTION: See next page ADAMS Accession Number: ML15287A017 Publicly Available Non-Publicly Available Sensitive Non-Sensitive To receive a copy of this document, indicate in the concurrence box C = Copy without attach/encl, E = Copy with attach/encl, N = No copy OFFICE LA:RPB1:DLR PM:RPB1:DLR BC:RPB1:DLR PM:RPB1:DLR NAME YEdmonds RPlasse YDiaz-Sanabria RPlasse DATE 10/ 20 /15 10/ 20 /15 10/ 20 /15 10/ 20 /15 OFFICIAL RECORD COPY

Letter to D. Curtland from R. Plasse Dated October 20, 2015

SUBJECT:

REGULATORY AUDIT PLAN - FERGUSON STRUCTURAL ENGINEERING LABORATORY EXPERIMENTAL TEST SUPPORTING THE ALKALI SILICA REACTION MONITORING AGING MANAGEMENT PROGRAM, REGARDING SEABROOK STATION, UNIT 1, LICENSE RENEWAL APPLICATION REVIEW (TAC NOS. ME4028)

DISTRIBUTION:

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RidsNrrDlr Resource RidsNrrDlrRpb1 Resource RidsNrrDlrRpb2 Resource RidsNrrDlrRarb Resource RidsNrrDlrRapb Resource RidsNrrDlrRasb Resource RidsNrrDlrRerb Resource RidsNrrDraArcb Resource RidsOgcMailCenter Resource Rids NrrMailCenter Resource Richard.Plasse@nrc.gov Lois.James@nrc.gov Tam.Tran@nrc.gov James.Danna@nrc.gov Brian.Wittick@nrc.gov John.Lamb@nrc.gov David.Mclntyre@nrc.gov Eugene.Dacus@nrc.gov Brian.Harris@nrc.gov Fred.Bower@nrc.gov Paul.Cataldo@nrc.gov Rich.Barkley@nrc.gov Chris.Lally@nrc.gov Christopher.Newport@nrc.gov Christopher.Highley@nrc.gov Nancy.McNamara@nrc.gov Doug.Tifft@nrc.gov Neil.Sheehan@nrc.gov Diane.Screnci@nrc.gov

Audit Plan ASR Monitoring Aging Management Program Review for the Seabrook Station License Renewal Application OCTOBER 26, 2015 Division of License Renewal Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission ENCLOSURE

ASR Monitoring Aging Management Program Audit Plan Seabrook Station

1. Background By letter dated May 25, 2010, NextEra Energy Seabrook, LLC (NextEra or the applicant),

submitted to the U.S. Nuclear Regulatory Commission (NRC or the staff) its application for renewal of operating license No. NPF-86 for the Seabrook Station (Seabrook), Unit 1.

Seabrook requested renewal of operating licenses for an additional 20 years beyond the 40-year current license term, which expires on March 15, 2030, for Unit 1. The staff from the Division of License Renewal will lead a regulatory audit, in accordance with LIC 111, to gain a better understanding of the documentation and technical adequacy of the Ferguson Structural Engineering Laboratory (FSEL) test, related to the Seabrook ASR Monitoring Aging Management Program (AMP).

In addition, regarding corrective action program to bring the condition of nonconformance back into conformance with the Current License Basis, the staff anticipates a possible License Amendment Request (LAR) related to ASR compensatory measures for operation, to be submitted for approval in the second quarter of 2016. This audit enables the staff with needed advance understanding of the technical basis of the anticipated LAR for the staff review.

2. Regulatory Audit Bases License renewal requirements are specified in Title 10 of the Code of Federal Regulations (CFR), Part 54 (10 CFR Part 54), Requirements for Renewal of Operating Licenses for Nuclear Power Plants. Guidance is provided in NUREG-1800, Rev. 2, Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants (SRP-LR), dated December 2010, and NUREG-1801, Rev. 2, Generic Aging Lessons Learned (GALL) Report, dated December 2010.

3. Regulatory Audit Scope The scope of this regulatory audit for Seabrook consists of two objectives:

(1) To facilitate a clear understanding by the applicant regarding the information needed by the staff to complete its review of the ASR AMP. The staff concerns and information requests are listed in the October 1, 2015, call summary, with the applicant.

(2) To enable the staff with needed advance understanding of the technical basis of the anticipated LAR for the staff review.

4. Information and Other Material Necessary for the Regulatory Audit The project team will review the license renewal application as amended, the AMP basis documents, and the FSEL testing setup, as appropriate.

5. Team Assignments Area of Review Assigned Auditor Management Oversight Brian Wittick Management Oversight Fred Bower Audit Lead Angela Buford Senior Structural Mechanics and George Thomas Engineering Structural Mechanics and Bryce Lehman Engineering

6. Logistics The audit will be conducted at the FSEL test at the University of Texas, Austin, Texas during the week of October 26, 2015. Entrance and exit briefings will be held at the beginning and end of this audit, respectively.

7. Special Requests The staff requests a suitable facility for NRC audit team to caucus prior to debriefing or exit meeting(s) with NextEra. The exit debrief (interview) may result in supplemental information needed for the ASR RAI response, for the staff to complete the SER review. The staff requests that the needed information will be included in the ASR RAI response, which is scheduled for November 30, 2015, otherwise as noted by NextEra in the response, as appropriate.

8. Deliverables An audit report should be issued to the applicant within 60 days from the end of the audit.

ASR Monitoring Aging Management Program Audit Needs List October 26, 2015 Tour and Observation:

• Overview of Ferguson Structural Engineering Laboratory (FSEL) large-scale testing program and tour of FSEL lab and facilities, including remaining test specimens and through-wall monitoring beam (representative testing sample and [bounding] testing condition)

• Observation of Shear Tests regarding ASR affected conditions (material aging effect and mechanism)

Interview and Discussion Meeting:

• Expansion measurement methodology of large-scale test specimens and sufficiency of through-wall cracking as the only parameter monitored

• Combined cracking index (CCI) as a surrogate for accumulated strain in the in-plane directions

• Methodology for use of normalized modulus approach to establish expansion-to-date and compare expansion of large-scale test specimens to expansion in Seabrook structures

• Representative sample of areas for monitoring ASR progression under ASR Monitoring Program

• Operating Experience regarding global deformation/displacement of Seabrook structures attributable to ASR, potential need to account for plastic deformation, and impact on ASR Monitoring Aging Management Program Documents for Inspection or Clarification:

• [ASR Monitoring Aging Management Program document and supporting references (including appropriate drawings, diagrams, or maps)]

• Documentation to support the use of CCI (and related through-wall cracking and expansion measurements).

• Documentation to support the use of through-wall cracking measurements as the single monitoring parameter, given the differences in external restraint and boundary conditions and the possibility that ASR expansion could manifest in a direction other than the through-thickness direction.

• Documentation on how the testing program determined the uncertainties associated with the testing and the comparison to Seabrook as built structures.

• Documentation (extent of cause or condition relative to structural evaluations) generated as a result of operating experience related to differential building movement due to ASR.