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AP1000 PIPING DESIGN ACCEPTANCE CRITERIA.AIOMeetingý with NRCDecember 18, 21006IlOWestinghouse

AP1000 PIPING DESIGN ACCEPTANCE CRITERIAAndrea L. Sterdis, Mgr.AP1000 Licensing and Customer Interface2O Westinghouse

AgendaAPI01(OO*Introduction and Purpose*Overview of Westinghouse DAC Strategy*Discussion of DAC Closure and Remaining ITAAC*Detailed Discussion of Piping Analysis StatuseConclusion/Actions Going ForwardOWestinghouse

Introduction and PurposeAIL UoOOi[0Communicate Westinghouse DAC Strategy*,Discuss the Piping Analysis Currently Available forNRC Audit/Inspection*Provide Mapping of DAC Items to the PipingDocumentation*Establish Date for Piping Audit4O Westinghouse

Piping. DAC CompletionAPI.OOOAt Design Certification for AP 10 00, oniy one linehad piping analysis" Result: A piping DAC was included in theAP 1000 Design Certification" No DAC were required for AP600 since sufficientcalculations were available at AP600 DesignCertification*Westinghouse position is that sufficient AP 1000lines have now been analyzed to allow for closureof the. Piping DAC"5G Westinghouse

Pipi ng DAC"Areview of the Piping DAC in Table 1-2 of theAP 1000 DCD Introduction focuses on Process andMethodology-Analysis methods-Criteria-Piping design procedures* Westinghouse Piping' Design and Analysis Processis established* Class 1 Design Specification includes the DAC.criteria6O Westinghouse

"API1OOOPiping DAC*APlOOG FSER provides staffs evaluation in thefollowing areas of the piping DAC:- Applicable Codes and StandardsAnalysis methods to be used for completing the pipingdesignModeling techniques- Pipe stress analysis criteria-Pipe support design criteria-7O Westinghouse

Piping DACAPIOOO*DAC can be closed provided the following occurs:- Westinghouse process and methodology address theDAC criteria- NRC reviews and accepts the process and methodology- Westinghouse provides a sufficient set of calculationsconsistent with the methodology and with the DACcriteriaNRC audit/inspection of the calculations-FavorableO Westinghouse

Piping DACFinal calculations for ALL lines should notbe required to close DAC-why?significant lines have ITAAC to verifycompletion and acceptabilityAll piping DAC items exist as Tier 2* DCDmaterial requiring NRC prior approval forchangesSafety class'piping must meet DAC criteria tobe stamped as meeting the Design Specification-Safety-*-OWestinghouse

APIOOOITAAC Verify As-Built Pip ing Design0Systems containing ASME Code Section IIIPiping have ITAAC on Piping Analysis CriteriaTableSystem NameRCS2.11.2-3Reactor Coolant SystemCNSPCsPxS2.2.1-3Containment System2.2.2-3Passive containment Cooling System2.2.3-4.Passive core cooling systemSGS2.2.4-4Steam Generator SystemVESCvS2.2.5-4MCR Emergency Habitability System2.3.2-4Chemical and Volume Control System10lOWestinghouse

AuPIO100ITAAC Verify As-Built Piping Design*Systems containing ITAAC on Piping AnalysisCriteria (continued)TableSystem NameRNS2.3.6-4Normal Residual Heat RemovalSFSWLS2.3.7-4 Spent Fuel Cooling System2.3. 10-4 Liquid Radwaste SystemPss2.3. 13-3Primary Sampling System11* Westinghouse

AAPI10O0OITAAC Applicable to Piping Design Verification" Item 2b-Designed and constructed in accordance withASME CodeASME Section III Design Report Exists-An"Item 3b7Welds meet ASME III Requirements-"Item 4b-Pressure boundary integrity-"Hydro test completedItem 5b or 5-Seismic Capability (As applicable)-"NDE Requirements are metNormal and seismic loads functional capability satisfiedLeak-Before-Break (As applicable)-LBBEvaluation complete12Westinghouse

Substantial Portions of the AP 1000Safety Related Piping Design are Complete*e****'P1'I00Lines are routed and sizedIsometric Drawing P repa redPiping Analysis PerformedSeismic Analysis PerformedLBB evaluation performedFabrication Evaluations underway13O Westinghouse

Licensiong GoalAIG" Establish an acceptable process andmethodology" Perform sufficient design/analyses todemonstrate the process and methodology" Gain NRC acceptance14O Westinghouse

AP1000 PIPING DESIGN ACCEPTANCE CRITERIAPhil KotwickiAP1000 Piping LeadisO Westinghouse

STATUS OF-W PIPING DESIGN10001M*The major safety-related lines have been analyzed" The rest of the AP 1000 piping design is ongoing" Analysis performed for inputs available at time of analysis" Inputs to the piping design may change as part of thedesign process" If inputs change, design iterations would be required ifupdated-results are required*Reconciliation of the existing packages is continuouslyevaluated to consider changes; Timing determined by avariety of factors including impact significance as well asschedule and economic risks*Each analysis package includes piping isometrics and pipesupport calculations and drawings16O Westinghouse

STATUS OF W PIPING DESIGNAw-"000* The ASME design report will include the summary results fromseveral analysis package stress reportsall class 1 packages in one design reportall class 2,3 packages in one design report* An as-designed report is planned to support COL application schedule(COL Information Item 3.9.8-2 covers safety class piping)* As-designed report will include:--LBB pipingLarge bore class 1 linesRepresentative large bore class 2/3 linessmall bore linessupport designs for the piping analyzeddetailed support ation17GWestinghouse

AP1000 PIPING DESIGN ACCEPTANCE CRITERIA1Pat StrauchAP1000 Piping Design18S Westinghouse

AWPIOOOAP1000 Safety Class Piping Analysis SummaryClass 1 Piping:70% of the routing packages with Class 1 piping have been assigned to 15 analysesThe remaining 30% are small boreLarge Bore Piping:70% of the routing packages containing large bore piping have been assigned to 50 analysesAnalysis Status:74 total analyses assigned (54 issued, 9 in progress,- 11 not yet started)11I Class 1 analyses issued4 Class 1 analyses pending (pzr spray, head vent and CVS purification supply and return)35 large bore piping analyses issued13 leak-before-break (LBI3) analyses issuedCurrent available analyses include a wide ran ge of pipe sizes and systems23Westinghouse

AP1000AP1000 -Leak-Before-Break Piping AnalysesV**********Reactor Coolant Loop PipingDirect Vessel Injection Line ADirect Vessel Injection Line BNormal Residual Heat Removal Suction LineAutomatic Depressurization System (ADS) Stage 4 EastADS Stage 4 West & Passive Residual Heat Removal (PRHR) SupplyPRUR ReturnCore Makeup Tank 2A Supply LineCore Makeup Tank 2B Supply LinePressurizer Safety Lines and ADS Stages 1, 2 and 3 LinesPressurizer Surge Line* Main Steam Line A .L *Main Steam LineB7O Westinghouse

AP1000AP1000 Direct Vessel Injection Line B - Compliance to Piping Design Acceptance CriteriaItemCommitmentAnalysis Page No.1ASME Code and Code Cases for AP 1000 piping and pipe support designASME Code (p. 160)ASME Code Eqns (p. 137)ASME Code Cases (NA)2Analysis Methods; experimental stress analysis, independent support motion, inelastic analysis, nonseismic/seismic interaction, buried pipingLodefntns(.16Abs I SSE and SAM(p.79)3Piping Modeling; piping benchmark program, decoupling criteriaMoeig(,2-3)Accumulator tank11l7-(p.13 1)4Pipe stress analysis criteria; loading and load combinations, damping values, combination of modalresponses, high frequency modes, thermal oscillations in piping connected to the reactor coolantsystem, thermal stratification, safety-related valve design, installation and testing, functional capability,combination of inertial and seismic motion effects, welded attachments, modal damping for compositestructures, minimum temperature for thermal analysisDamping (p. 70)Piping requirement (p. 135 - 140)Functional capability (p. 141, 232,233)5Pipe support criteria; applicable codes, jurisdictional boundaries, pipe support baseplate and anchor boltdesign, use of energy absorbers and limit stops, pipe support stiffnesses, seismic self-weight excitation,design of supplementary steel, considerations of friction forces, pipe support gaps and clearances,instrument line support criteriaDesign, Service limits (p. 138 - 141)Support design data (p. 84 - 93)6Equivalent Static Load Method of AnalysisNA7Three Components of Earthquake Motionp. 708Left-Out-Force Method Used in PIIPESTRESS ProgramDescribed in PIPESTRESS manual9SRP 3.7.2 Method for High-Frequency ModesDescribed in PIPESTRESS manual10IFCombinationof Low-Frequency ModesIFReg.19Guide 1.92(p.70)O Westinghouse

AIPIOOOAP1000 Direct Vessel Injection Line B - Compliance to Piping Design Acceptance Criteria (Cont.)ItemCommitmentAnalysis Page No.IIModeling Methods and Analytical Procedures for Piping Systemsp. 22-33 (no gapped supports)12Seismic Anchor Motionsp. 79-8313Methods Used to Account for Torsional Effects of Eccentric MassesValve CGs are modeled (e.g., p. 246)14Design Methods of Piping to Prevent Adverse Spatial Interactionsp.5,63715Analysis Procedure for Dampingp716Time History Analysis of Piping SystemsN17Design Transients - Use of NRC Bulletins 88-08 and 88-11p718Loads for Class 1 Components and Core/Component Supportsp. 3319Use of Square-Root-Sum-of-the-Squares Method for SSE plus Pipe RuptureNA (Break loads negligible per p. 83)20Analysis of Reactor Coolant Loop PipingN21ASME Classes 1, 2, and 3 Piping - Use of ASME Code, Section IIIp. 2 2 3 -23122Design of Spring-Loaded Safety ValvesNA (Pertains to lines attached to Pzr)23Design and Analysis Requirement for Open and Closed Discharge SystemsNA24Component and Piping Supports for Dynamic LoadingSupport stiffness (p. 8425Class 2 and 3 Component Supports - Use of ASME Section IIISupport design later26Piping System Seismic Stress AnalysisSnubber stiffness (p. 85)27Design Report for ASME Class 1, 2, and 3 PipingLater, after final design analysis28Integrity of Nonsafety-Related CVS Piping Inside Containment.Compliance with 10 CFR 50.55a and ASME B3 1.1 Code.NA20-83-86)S Westinghouse

APIOOOAP1000 Main Steam Line B - Compliance to Piping Design Acceptance CriteriaItemAnalysis Page No.CommitnmentAPl1000 piping and pipe support designIASME Code and Code Cases forASME Code (p. 74)ASME Code Eqns (p. 103)ASME Code Cases (NA)2Analysis Methods; experimental stress analysis, independent support motion, inelastic analysis, nonseismic/seismic interaction, buried pipingAbs Z SSE and SAM (p. 25)Load definitions (p. 74)Seismic interaction (p. 86)Exp. stress analysis (NA)Buried pipe (NA)3Piping Modeling; piping benchmark program, decoupling criteriaModeling, coupling4Pipe stress analysis criteria; loading and load combinations, damping values, combination of modalresponses, high frequency modes, thermal oscillations in piping connected to the reactor coolantsystem, thermal stratification, safety-related valve design, installation and testing, functionalcapability, combination of inertial and seismic motion effects, welded attachments, modal damping forcomposite structures, minimum temperature for thermal analysisDamping (p. 25)Piping requirements (p. 77)Functional capability (p. 78, 118)5Pipe support criteria; applicable codes, jurisdictional boundaries, pipe support baseplate and anchorbolt design, use of energy absorbers and. limit stops, pipe support stiffnesses, seismic self-weightexcitation, design of supplementary steel, considerations of friction forces, pipe support gaps andclearances, instrument line support criteriaDesign, Service limits (p. 76)Support design data (p. 44 - 52)6Equivalent Static Load Method of AnalysisNA7Three Components of Earthquake Motionp. 25 -328Left-Out-Force Method Used in PIPESTRESS ProgramDescribed in PIPESTRESS manual9SRP 3.7.2 Method for High-Frequency ModesDescribed in PIPESTRESS manual10Combination of Low-.Frequency ModesIFReg. Guide 1.9221(p.(p.15, 25)25)O Westinghouse

AAPIO100AP1000 Main Steam Line -B - Compliance to Piping Design Acceptance Criteria (Continued)ItemAnalysis Page No.Commitment11 Modeling Methods and Analytical Procedures for Piping SystemsTher are no gapd19p12Seismic Anchor Motionsp. 33 -3413Methods Used to Account for Torsional Effects of Eccentric MassesValve CGs are modeled14Design Methods of Piping to Prevent Adverse Spatial Interactionsp. 8615Analysis Procedure for Dampingp. 2 516Time History Analysis of Piping SystemsMSIV closure (p. 40)17Design TransientsNA18Loads for Class I Components and Core/Component SupportsNA19Use of Square-Root-Sumn-of-the-Squares Method for SSE plus Pipe Rupturep. 18220Analysis of Reactor Coolant Loop PipingNA21ASME Classes 1, 2, and 3 Piping - Use of ASME Code, Section IIIp.7,7,822Design of Spring-Loaded Safety Valves23Design and Analysis Requirement for Open and Closed Discharge Systemsp.324Component and Piping Supports for Dynamic LoadingSuprstfns(.4625Class 2 and 3 Component Supports - Use of ASME Section IIIp.726Piping System Seismic Stress AnalysisSnubber stiffness (p. 46, 47)27Design Report for ASME Class 1, 2, and 3 PipingLater, after final design analysis28Integrity of Nonsafety-Related CVS Piping Inside ContainmentCompliance with 10 CFR 50.5 5a and ASME B3 1.1 CodeNN-Use ofNRC Bulletins 88-08 and 88-11N22PranolnsatceoPrO Westingrhouse

AP1000 PIPING DESIGN ACCEPTANCE CRITERIA1Conclusion and Actions Going Forward24G Westinghouse

ConclusionAIO*Westinghouse position is that sufficient calculations areavailable for NRC immediate review*Successful NRC review of the existing piping analysiscalculations and design specification will allow for DACclosure*Why?Safety Significant Lines Available Now--Piping Analysis for AP 1000 has greater detail than AP600Piping supports were not designed for AP600 but have detaileddesigns for AP 1000Piping design specification significantly more detailed for AP 100025Westinghouse

Actions Going ForwardA " Schedule audit/inspection of existing calculationsand design specification" NRC to review list provided today to -determinesufficiency* Westinghouse to submit TR 13 (COL InformationItem 3.9.8-2), which will expand list of completed.lines" Westinghouse to provide a list of representativesmall bore lines that will be done to supportdesign certification amendment and/or COLschedule26Westinghouse

25 Class 2 and 3 Component Supports -Use of ASME Section III Support design later 26 Piping System Seismic Stress Analysis Snubber stiffness (p. 85) 27 Design Report for ASME Class 1, 2, and 3 Piping Later, after final design analysis 28 Integrity of Nonsafety-Related CVS Piping Inside Containment. NA