ML21057A018

Pre-Submittal Meeting Revise Technical Specification 3.2.1 Heat Flux Hot Channel Factor (Fq(Z)) (EPID L-2021-LRM-0023) (Slides)

ML21057A018
Person / Time
Site:	Vogtle, Farley
Issue date:	02/26/2021
From:	Southern Nuclear Operating Co
To:	John Lamb NRC/NRR/DORL/LPL2-1
Williams S
Shared Package
ML21056A603	List: ML21057A018
References
EPID L-2021-LRM-0023
Download: ML21057A018 (21)

Text

Farley & Vogtle Pre-Submittal Meeting Revise Technical Specification 3.2.1 Heat Flux Hot Channel Factor (FQ(Z))

March 2021

Meeting Purpose and Agenda

• The purpose for this meeting is to discuss a proposed amendment request to revise Technical Specification 3.2.1 Heat Flux Hot Channel Factor (FQ(Z)) to adopt WCAP-17661-P-A

• This meeting will cover the following topics:

• Background on TS 3.2.1 and WCAP-17661

• Proposed License Amendment Request 2

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Background===

Background

• Feb 1994 - WCAP-10216-P-A, Rev 1A, Relaxation of Constant Axial Offset Control (and) FQ Surveillance Technical Specification issued

• Feb 2009 - Westinghouse identified a non-conservatism associated with TS 3.2.1, Hot Flux Channel Factor (FQ(Z)), Required Action B

• Sep 2009 - Westinghouse issued NSAL 09-05, Revision 1

• Stations treated as non-conservative Technical Specification

• Jan 2014 - PWROG submitted TR WCAP-17661-P, Revision 1, in order to develop a solution to the problem identified in NSAL 09-05 4

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Background===

• Farley and Vogtle 1&2 identified a non-conservatism associated with TS 3.2.1 SR 3.2.1.2

• Feb 2015 - Westinghouse issued NSAL-15-1 after determining that one aspect of TS SR 3.2.1.2 may not be sufficient to assure that the peaking factor that is assumed in the licensing basis analysis is maintained under all conditions between the frequency of performance of TS SR 3.2.1.2.

• Treated as non-conservative Technical Specification

• NSAL-15-1 guidance is no longer required once the WCAP-17661-P based Tech Specs are implemented.

• Nov 2018 - NRC issues Safety Evaluation (SE) for WCAP-17661, Revision 1

• Aug 2019 - NRC issues verification letter noting WCAP-17661-N-P is acceptable for referencing in licensing applications (with limitations) 5

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Background===

• NSAL-09-5 entered into Corrective Action Program (CAP)

• NSAL-15-1 entered into CAP

• Corrective actions remain open pending approval of the amendment

• LAR Approach

• As noted above, SNC will request adoption of WCAP-17661-P-A with limitations specified in the NRC SE dated November 23, 2018

• TSTF-99-A, Extend LCO 3.2.1B, Required Action B.1 Completion Time from 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />

• TSTF-241-A, Allow time for stabilization after reducing power due to QPTR out of limit

• TSTF-290-A, Revisions to hot channel factor specifications 6

Proposed License Amendment Request

Proposed License Amendment Request Resolve the non-conservative TS issues identified in NSAL-09-05, Revision 1, and NSAL-15-1 by submitting a LAR to:

• Implement TS 3.2.1 surveillance formulations and required actions as shown in WCAP-17661-P-A, Revision 1

• Apply Approval Limitations in the associated NRC SE.

• Limitation 1: Use of AXY and AQ

• Limitation 2: Power Level Reduction to 50% RTP

• Implement TSTF-99-A, TSTF-241-A, and TSTF-290-A 8

Technical Specification

• Proposed TS Changes

• TS 3.2.1 Condition A

• TS 3.2.1 Condition B

• SR 3.2.1.1 and SR 3.2.1.2

• TS 5.6.5

• Schedule Milestones

• Submit March 2021

• Approval Requested by March 2022

• Implement after next refueling outage for each unit 9

Proposed TS Markups 10

Proposed TS Markups 11

Proposed TS Markups 12

Proposed TS Markups 13

Proposed TS Markups 14

Proposed TS Markups 15

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Questions?