ML18255A014

BWROG Presentation Slides for Public Meeting Sept 12 2018

ML18255A014
Person / Time
Site:	Browns Ferry, Fermi, Hope Creek, Cooper, Brunswick, FitzPatrick
Issue date:	09/12/2018
From:	Shepherd C BWR Owners Group
To:	DTE Electric Company, Duke Energy Progress, Exelon Generation Co, Division of Operating Reactor Licensing, Nebraska Public Power District (NPPD), Public Service Enterprise Group, Tennessee Valley Authority
O'Banion M
References
Download: ML18255A014 (5)

Text

BWROG Target Rock SRV Performance Improvement Committee Craig Shepherd (DTE) - Committee Chairman BWROG/NRC Meeting September 12, 2018 Copyright 2018, BWR Owners Group, All Rights Reserved

History/Scope Formed in 2016 Committee Scope: address the common causes of repetitive Target Rock 2-stage SRV as-found set-point test failures in the fleet.

• Technical Exchange Meetings: share site set point drift performance, best practices, roadmap planning

• 2-stage valve focus

• Scope focused on setpoint drift Membership: DTE/Fermi, Duke/Brunswick, Exelon/FitzPatrick, NPPD/Cooper, PSEG/Hope Creek, TVA/Browns Ferry Copyright 2018, BWR Owners Group, All Rights Reserved 2

2017/18 Activities

• Industry-shared IBAD procedure (application of Platinum to disc surface)

• Autoclave Screening Test - used to help develop sputtering application process of Platinum on test coupons and comparison to IBAD. Obtained positive results.

• Plasma Enhanced Magnetron Sputter Coating of (Quantity 3) pilot discs with Platinum. Performed steam validation testing with positive results. In process of obtaining BWROG product for utilizing Sputtering for application of Platinum on SRV pilot discs.

• Static Autoclave Material Screening - baseline conditions of corrosion bonding with control group and screening other materials. (Started Aug. 24, 2018)

Copyright 2018, BWR Owners Group, All Rights Reserved 3

2019 Planned Activities Test different thickness of (sputtered) Platinum coated on pilot discs in valve lift tests.

• Sputtering opens process space for different thicknesses of Platinum Coating.

• Potential for fleet usage

- Know that current thickness of Platinum coating provided step-improvement in set point drift performance.

- Does increase in thickness provide more protection from corrosion bonding?

Copyright 2018, BWR Owners Group, All Rights Reserved 4

LER Reduction Initial scoping effort to understand current Tech Spec Limits and alternative licensing approaches.

• Not a funded project at this time.

• Initial discussions among multiple BWROG committees.

Copyright 2018, BWR Owners Group, All Rights Reserved 5