ML13319A939

Ri GSI-191 November 2013 Meeting with NRC Rev 0

ML13319A939
Person / Time
Site:	Calvert Cliffs
Issue date:	11/13/2013
From:	Constellation Energy Group, EDF Group
To:	Office of Nuclear Reactor Regulation
Morgan N
Shared Package
ML13319A601	List: ML13319A621 ML13319A670 ML13319A679 ML13319A725 ML13319A773 ML13319A818 ML13319A932 ML13319A939
References
Download: ML13319A939 (12)

Text

CalvertCliffsCalvert CliffsChemical Effects in k fd Ris k-In f orme d GSI-191ResolutionResolution SihDiiWihNRCSff Si xt h Di scuss i on Wi t h NRC S ta ffNovember 13, 2013 AgendaIntroductions ObjectivesforMeetingObjectives for MeetingDiscuss Preliminary Autoclave Test ResultsDiscussion of Chemical Effects PIRT Items Discussion of Alkyds Autoclave Test PlanDiscussion of Integrated Chemical Effects Testing Topics

-Zinc and Marinite Debris

-Chemical Effects Head Loss Loop DesignDiscussionofSmall

-ScaleDebrisBypass/PenetrationTestPlan Discussion of SmallScale Debris Bypass/Penetration Test PlanSchedule for future periodic meetings CCNPP AttendeesTom Konerth -Supervisor Mechanical DesignKenGreeneLicensingEngineerKen Greene -Licensing EngineerJohn Swailes -Project Manager GSI-191CraiSellersProjetManaerRIGSI 191Crai g Sellers -Proje c t Mana g er RI GSI-191Steve Kinsey -Chemical Effects TestingJhWChilEffTiJ os h Wargo -Ch em i ca l Eff ects Test i ngJon Cavallo -Coatings Consultant Objectives of MeetingDiscuss Preliminary Autoclave Test ResultsContinue to Work Towards Agreement on Chemical Effects PIRTI CCNPP CHLE 003PIRT I ssues -CCNPP-CHLE-003Review & Work Towards Agreement on Chemical Effects Testing TopicsAlkdAlTPl CCNPP CHLE 007-Alk y d Autoc lave Test Pl an -CCNPP-CHLE-007-Considerations for Zinc -CCNPP-CHLE-008

-Considerations for Marinite -CCNPP-CHLE-009IntegratedChemicalEffectsHeadLossLoopDesign

-Integrated Chemical Effects Head Loss Loop DesignReview & Work Towards Agreement on Small-Scale Strainer Bypass Test Plan -CCNPP-BPPlan-002PresentProposedScheduleforFutureMeetingsPresent Proposed Schedule for Future MeetingsCapture Staff Issues and Concerns Preliminary Autoclave Test ResultsCCNPP-CHLE-006 -Metals

-Insignificant Concentrations

• Cr, Fe, Ni

-Very High Ca Concentration

• Influenced Revised MariniteScaling Methodology

-Very High Zn Concentration

• Pure Zinc >> Galvanized Steel

• Influenced Revised Zinc Modeling Methodology

-Preliminary Data Insufficient for Additional InsightsCCNPP-CHLE-005-HighTemperature CCNPP CHLE 005 High Temperature

-No Results to Date Chemical Effects PIRT IssuesPIRT Item 2.5 Additional Debris Bed Chemical Reactions

-Fiberglass & Metals Insensitive

-Irradiation is not expected to have a chemical effects impact on coatingsPIRT Item 3.9 Concrete Material Aging

-Using concrete from Original Plant Construction

-All Original Concrete Made On-Site with Same MaterialsPIRT Item 6.4 Coatin gs Dissolution and Leachin g gg-Epoxy Coatings Not Sensitive

-Zinc Coatings Used in Tests

-AlkydCoatingstobeaddressedinAutoclaveTestAlkyd Coatings to be addressed in Autoclave TestOthers Alkyds Autoclave Test Plan -CCNPP-CHLE-007Investigate Chemical Effects from Alkyd Coatings

-Apply Alkyd Coatings to SS Coupons

-Include LOCA Debris and Exposed Reactive Materials

-Submerge in Borated Water

-DissolveBufferat195

°FDissolve Buffer at 195 F-Expose to LOCA Temperature Profile for 7 Days

-Vacuum Filtration for Head Loss Implicationslfb/-Visua l Examination f or De b ris / Precipitates

-Chemical Analysis for Potential Precipitants & OrganicsSection-by Section Review Zinc Considerations -CCNPP-CHLE-008Failed Inorganic Zinc Coatings Historically Treated as 10 µm S pheres for H ydraulic CharacteristicsµpyModeling as such in Chemical Effects Testing Results in Very Large Surface Area of Surrogate MaterialCalvert Cliffs Proposed Approach

-IOZ in ZOI and Unqualified Zinc-Rich Coatings Tested using SmoothZincPlateSurrogatewithSameSurfaceAreaas10 Smooth Zinc Plate Surrogate with Same Surface Area as 10 µm Spheres

-Degraded Qualified IOZ Tested using Cured/Aged IOZ CoatedCoponsith2SrfaceAreaofDegradedCoated Co u pons w ith 2 x S urface Area of Degraded Coatings Marinite Considerations -CCNPP-CHLE-009Marinite Fines Debris Historically Treated as 10 µm SpheresforHydraulicCharacteristicsSpheres for Hydraulic CharacteristicsModeling as such in Chemical Effects Testing Results in V e r y L a r ge Su rf ace Ar ea o f So li d M a rini teeyageSuaceeaoSodateCalvert Cliffs Proposed Approach

-Marinite Fine Debris Tested usin g 1/2" Thick Marinite Board gwith 25% of the Surface Area as 44 µm Spheres

-Marinite non-Fines Tested using 1/2" Thick Marinite Board ithPtltdSfASbdSd w ith P os t u l a t e d S ur f ace Area S u bmerge d or Spraye d Integrated Chemical Effects Head Loss Test LoopVertical Head Loss Column Primary Reaction Chamber(Showing Clearance for Coupons)Heat Exchanger Loop Initial Preparation ChamberLoop Heating & Cooling Small-Scale Bypass Test Plan-CCNPP-BPPlan-002Sensitivity TestsWaterChemistry

• Design of Experiments

-Water Chemistry-Water Temperature

-Fiber MixtureRunFiber TypeWater ChemistryTemperature°°Prototypical Strainer

-Fabricated from Similar °°°°Perforated PlateContinuous Filtration°°°°Section-by Section Review Schedule for Future Periodic MeetingJanuary 2014

-ChemicalEffectsBench

-TopTestResultsChemical Effects BenchTop Test Results-Final Chemical Effects Screening Test Protocol