North Anna 3 COLA NRC Briefing: June 2010NRC Briefing ... · Summary of Changes: FSAR Ch 2 ( t )FSAR Chap. 2 (cont.) – 2.4,,y gy Hydrology zRevised local probable maximum precipitation

North Anna 3 COLA NRC Briefing: June 2010NRC Briefing: June 2010 S-COLA Submission

July 27, 2010Part 1

P f M tiPurpose of Meeting

Provide overview of changes in the June 2010 North Anna Unit 3 S-COLAJune 2010 North Anna Unit 3 S COLA submission

Respond to NRC questions

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S f R i iSummary of RevisionsChanged from ESBWR to US-APWRChanged from ESBWR to US APWR technologyUpdated Part 1 organizational, financial, p g , ,and decommissioning information 3-inch lake level increase (FSAR)( )Revised off-site receptor distancesUpdated QAPD and organizationUpdated Q a d o ga at oUpdated NEI templates

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General Approach to Revising the COLACOLA

Goals– Maximize use of existing information and reviews– Maximize standardization with R-COLA for US-APWR

technologygy– Clearly identify what’s changed and what’s not– Minimize departures– Minimize NRC review scope and scheduleMinimize NRC review scope and schedule

Basic References– US-APWR DCD Rev. 2

C h P k R COLA R 1– Comanche Peak R-COLA Rev. 1– North Anna ESBWR R-COLA Submission 5– North Anna Early Site Permit

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General Approach to Revising the COLA ( t)COLA (cont)

COLA t tCOLA content:Limited scope of changes to technology h h iblchange as much as possible,

andI d CP R COLA R 1Incorporated CP R-COLA, Rev. 1 content orP d NAPS R COLA t t hPreserved NAPS R-COLA content as much as possible

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General Approach to Revising the COLA ( t)COLA (cont)

Left Margin NotationsLeft Margin Notations:Used LMN categories currently identified in CP R-COLA

Added ‘STD*’ category – The material identified is identical to the material in the R-COLA and thus should not require additional review.

Added ‘STD**’ category – The material identified is identical to the material in the R-COLA except that a unit or plant-specific reference is replaced with a generic reference and thus should not require additional review.

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Summary of Changes: P t 1 G l & Ad i I fPart 1, General & Admin Info

B li D t NAPS R COLABaseline Document: NAPS R-COLA

Differences :f– Reflected new technology

– Updated financial information– Updated organization informationUpdated organization information– Updated decommissioning information

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Summary of Changes: FSAR Ch 1 I t d tiFSAR Chap. 1 Introduction

Baseline Document: CP R COLABaseline Document: CP R-COLADifferences:

– FSAR 1.9, ‘Conformance with RGs and SRP’ – used ,NAPS R-COLA format

– FSAR 1.10, ‘Hazards Posed by Construction to Operating Units’ – used NAPS R-COLA p g

– Site-specific changes including figures, departures, variances, key milestones, contractors

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Summary of Changes: FSAR Ch 2 Sit Ch t i tiFSAR Chap. 2, Site Characteristics

Baseline Document: NAPS R-COLADifferences :

– 2.0, Site CharacteristicsUsed US-APWR DCD site parameter valuesMoved site parameters not included in US-APWR DCD from Part 1 to Part 2 of the comparison tableIncrease in hydraulic gradientUsed minimum measured Kd valuesAdded references to vertical datums for clarification

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Summary of Changes: FSAR Ch 2 ( t )FSAR Chap. 2 (cont.)

– 2.0, Site Characteristics (cont), ( )Used US-APWR DCD Chapter 15 accident source termsUsed US-APWR maximum structure height andUsed US APWR maximum structure height and embedment depthUsed US-APWR blowdown flow rate and rated reactor thermal powerreactor thermal power

– 2.1, Geography and DemographyUpdated figure to reflect US-APWR structures

1010


– 2.2, Nearby Facilities, yRevised gasoline delivery truck accident probability analysisRevised toxicity flammability and explosive hazardsRevised toxicity, flammability, and explosive hazards screening evaluationsRevised wildfire heat flux analysisAdded one airwayAdded one airwayMoved aircraft hazards discussion to Section 3.5.1.6

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– 2.3, Meteorology, gyRevised Unit 3 site characteristic values for tornadoesDeleted basic wind speedProvided a maximum snowfall event estimateProvided a maximum snowfall event estimateAdded 48-hr PMWP event for MarchRevised on-site accidental release point to receptor di tdistancesEvaluated potential for salt deposition, humidity, and temperature impacts of cooling towers for US-APWR

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– 2.4, Hydrology, y gyRevised local probable maximum precipitation (PMP) flooding analysesIncorporated the 3-in normal pool level rise for LakeIncorporated the 3 in normal pool level rise for Lake AnnaProvided additional data on groundwater level elevationselevationsRevised groundwater modelRevised accidental release of liquid effluents to ground and surface waters using minimum measuredground and surface waters using minimum measured Kd values

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Departures:Departures:– NAPS DEP 2.0(1), Maximum Non-Coincident

Wet Bulb TemperatureU it 3 it h t i ti l f 88°F d DCDUnit 3 site characteristic value of 88°F exceeds DCD Table 2.0-1 value of 86°F for this site parameterAffects Section 2.0

NAPS DEP 2 3(1) M i C t l R– NAPS DEP 2.3(1), Main Control Room Atmospheric Dispersion Factors, Source to Receptor Distance Determination

Used longer distances to determine four on-site dispersion factorsAffects Section 2.3

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Variances (No change from NAPS ( gR-COLA):– NAPS ESP VAR 2.0-2, Hydraulic Conductivity:

The maximum hydraulic conductivity value does not fall within (is greater than) the corresponding ESP valuecorresponding ESP value

Used maximum hydraulic conductivity value rather than the corresponding ESP value

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Variances (No change from NAPS ( gR-COLA):

– NAPS ESP VAR 2.0-7, Coordinates and Abandoned Mat Foundations: Used correct coordinates for the eightFoundations: Used correct coordinates for the eight points that define the “ESP Plant Parameter Envelope” and will not remove the abandoned mat foundations for the originally planned North Anna Units 3 and 4 g y p

There is an error associated with the coordinates of the proposed facility boundaries shown in ESP, Appendix A, Figure 1. The US APWR arrangement allows the power blockThe US-APWR arrangement allows the power block Seismic Category I and II structures to be located away from the abandoned mat foundation. Therefore, it is not necessary to remove the abandoned foundations

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Variances (No change from NAPS ( gR-COLA):

– NAPS ESP VAR 2.4-2, NAPS Water Supply Well Information: The water supply well information is differentInformation: The water supply well information is different than that provided in the SSAR

Used corrected information for water supply wells on the NAPS sitethe NAPS site

– NAPS ESP VAR 2.4-3, Well Reference Point Elevation: The reference point elevation for well no. WP-3 is different than the SSAR reference point elevationdifferent than the SSAR reference point elevation

Used corrected well reference point based on a survey measurement

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Variances (No change from NAPS ( gR-COLA):– NAPS ESP VAR 2.5-1, Stability of Slopes: The

slopes near Unit 3 are different from those anticipated in the SSAR

Unit 3 slopes have a higher factor of safety p g yagainst failure

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Variances (Revised from NAPS R-COLA):Variances (Revised from NAPS R COLA):– NAPS ESP VAR 2.0-1, Long-Term Dispersion Estimates

(X/Q): The new values for some long-term dispersion estimates do not fall within (are larger than) the ESP andestimates do not fall within (are larger than) the ESP and ER values

Used revised X/Q values for types of locations other than the EAB rather than the corresponding ESP valuesp g

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Variances (Revised from NAPS R-COLA):Variances (Revised from NAPS R COLA):– NAPS ESP VAR 2.0-3, Hydraulic Gradient: The Unit 3

value for hydraulic gradient does not fall within (is greater than) the corresponding ESP valuethan) the corresponding ESP value

Used updated hydraulic gradient value provided in FSAR Section 2.4.12.1.2 rather than the corresponding ESP value

– NAPS ESP VAR 2.0-4, Vibratory Ground Motion: The elevation of the control point is not the same as that in the SSAR.the SSAR.

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Variances (Revised from NAPS R-COLA):( )– NAPS ESP VAR 2.0-5, Distribution Coefficients (Kd):

Some of the Unit 3 values for distribution coefficient do not fall within (are less than) the ESP values and therefore would predict higher doses than the Kd valuestherefore would predict higher doses than the Kd values in the ESP

Used measured site-specific minimum distribution coefficient (Kd) values rather than the corresponding ESP valuesvalues

– NAPS ESP VAR 2.0-6, DBA Source Term Parameters and Doses: Some Unit 3 source term values and doses from DBAs do not fall within (are larger than) the ESP valuesvalues.

Used the Unit 3 source terms and resulting doses from the DCD Chapter 15 analyses of DBAs.

2121


Variances (Revised from NAPS R-COLA)– NAPS ESP VAR 2.4-1, Void Ratio, Porosity, y

and Seepage Velocity: The Unit 3 value for seepage velocity does not fall within (is greater than) the SSAR valuethan) the SSAR value

Used additional data collected during the Unit 3 subsurface investigation

2222


Variances (New for NAPS S-COLA)– NAPS ESP VAR 2.4-4, Lake Level Increase: The lake

l l d t f ll ithi (i l th ) th SSAR llevel does not fall within (is larger than) the SSAR valueIncreased normal pool level to reduce impacts on the ecology, wetlands, and recreation in Lake Anna and downstreamdownstream

2323

Summary of Changes: FSAR Chap. 11, Radioactive Waste Management System

Baseline Document: CP R-COLADifferences :

– 11.1, Source Terms - None– 11 2 Liquid Waste Management System:– 11.2, Liquid Waste Management System:

Site-specific cost-benefit analysis of adding additional equipmentDescribed flow path for releases of treated liquidDescribed flow path for releases of treated liquid radioactive effluentsSite-specific liquid radioactive effluent releases and doses (VAR 11.2-1)

– Releases and doses are within regulatory limitsSite-specific source terms for liquid radioactive release analysis

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– 11.3, Gaseous Waste Management System:, g ySite-specific cost-benefit analysis of adding additional equipmentSite-specific radioactive gaseous effluent releasesSite specific radioactive gaseous effluent releases and doses (VARs 11.3-1 and 11.3-2)

– Releases and doses are within regulatory limits

11 4 S lid W t M t S t– 11.4, Solid Waste Management System:Provided design information on IRSF

2525


– 11.5, Process Effluent Radiation Monitoring and , gSampling System:

Added startup steam generator blowdown heat exchanger downstream radiation monitorexchanger downstream radiation monitorQAPD (not RG 1.33) is used for procedure development for radioactive waste systems

2626

Summary of Changes: FSAR Chap 11 (cont )FSAR Chap. 11 (cont.)

Appendix 11AA Interim Radwaste Storage Facility– Appendix 11AA, Interim Radwaste Storage Facility (IRSF): New Appendix

Supplemental temporary storage of Class B and C t bili d t th t ld b t d d i 10stabilized waste that would be generated during 10

years of Unit 3 power operation packaged in high density polyethylene (HDPE) high integrity containers (HICs)(HICs)Stand-alone steel-reinforced concrete building inside Unit 3 PA for material and access control

26


Departures:p– NAPS DEP 9.2(1): Replacement of Boron Recycle

System (BRS) with Degasifier SubsystemAffected source terms for normal and accidental releasesEliminated boric acid evaporator as a main source of radioactive input to the GWMSChanged a radiation monitor description Aff t S ti 11 2 11 3 11 4 d 11 5Affects Sections 11.2, 11.3, 11.4, and 11.5

2828


Variances:– NAPS VAR 11.2-1, Annual Liquid Effluent Releases:

The new values for some nuclides do not fall within (are larger than) the ESP and ESPA valuesg )

Used US-APWR annual liquid release values rather than corresponding ESP and ESPA values

– NAPS ESP VAR 11.3-1, Gaseous Pathway Doses: Several of the gaseous pathway doses to the maximally exposed individual (MEI) do not fall within (are greater than) corresponding ESP and ESPA values

Used updated US-APWR information for gaseous effluent doses rather than the ESP and ESPA information

2929


Variances (cont.)Variances (cont.)– NAPS ESP VAR 11.3-2, Existing Units’ Doses:

The doses for total body, thyroid, and bone due to the existing units do not fall within (are greater than) the corresponding ESP values

Used updated information for doses for the existingUsed updated information for doses for the existing units rather than the information in the SSAR

Notable changes from the NAPS R-COLA:– Dose calculations moved to Chapter 11 from Chapter 12

3030

Summary of Changes: FSAR Chap 12, R di ti P t tiRadiation Protection

Baseline Document: CP R-COLADifferences :– Used more recent (approved) version of NEI

07-08A, ‘ALARA’– Added information on IRSF

Departures:Departures:– NAPS DEP 9.2(1): Replacement of Boron Recycle

System (BRS) with Degasifier SubsystemRevised radiation sources, shielding calculations, and radiation zone mapsAffects Sections 12.2 and 12.3

3131

Summary of Changes: FSAR Chap 12, R di ti P t tiRadiation Protection

Departures (cont.):p ( )– NAPS DEP 10.2(1): Main Turbine Type Change

Revised radiation zone maps for turbine buildingAffects Section 12.3

– NAPS DEP 10.4(1): Main Condenser Type ChangeChange

Revised radiation zone maps for turbine buildingAffects Section 12.3

3232

Summary of Changes: FSAR Ch 3 D i f SSCFSAR Chap. 3 Design of SSCs

Baseline Document: CP R-COLADifferences:

– Site-specific changes, such as seismic analyses, wind speed etcspeed, etc

– Incorporated SSAR aircraft hazard analysis with supplement for US-APWR plant areasC f– CP is prototype for reactor internals vibration measurement program

– Site-specific design of ESWPT, UHSRS, and PSFSVs– For site-specific UHS winter operation, added new MOVs

and piping for freeze protection– Equipment qualification and piping design will address

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seismic exceedances

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Departures:p– NAPS DEP 3.7(1): Seismic Spectra

ExceedanceFIRS exceed CSDRSBroadened ISRS exceed standard designModified standard design of PS/Bs foundation reinforcement to include dowels for sliding stability resistanceChanged method for computing factor of safety against overturningAffects Sections 3.7 and 3.8, and various Chapter 3 Appendices

3434


Departures:p– NAPS DEP 3.7(2): Site Amplification Functions

and Site Response AnalysisUsed different methodologies to develop GMRS and free-field outcrop spectra of site-specific horizontal and vertical ground motions (FIRS)

ff SAffects Section 3.7

3535


Departures (cont.):p ( )– NAPS DEP 3.7(3): MNES Improvements to Seismic

Analysis MethodsUsed revised DCD seismic analysis methodologies andUsed revised DCD seismic analysis methodologies and models for Unit 3 (Tech Reports MUAP-10001, Revision 1 and MUAP-10006, Revision 0)Affects Sections 3.7 and 3.8, and various Chapter 3 Appendices

– NAPS DEP 9.2(1): Replacement of Boron Recycle System (BRS) with a Degasifier Subsystem

Updated DCD list of equipment to replace BRS equipment with Degasifier Subsystem equipmentAffects Section 3.2 and Appendix 3E

3636


Departures (cont.):p ( )– NAPS DEP 9.5(1): PSFSV Elevation

Unfavorable turbine orientation for PSFSV missile protectionprotectionAffects Sections 3.5, 3.7 and 3.8

– NAPS DEP 10.2(1): Main Turbine Type Change( ) yp gReferenced site-specific turbine reportsAffects Section 3.5

3737


Departures (cont.):p ( )– NAPS DEP 14.2(3): Initial Test Program (ITP)

ScopeEliminated construction testing from ITP consistent with SRP 14.2Affects Section 3.9

3838

Summary of Changes: FSAR Ch 4 R tFSAR Chap. 4, Reactor

B li D t CP R COLABaseline Document: CP R-COLADifferences: NoneDepartures: NoneDepartures: None

3939

Summary of Changes: FSAR Chap. 5, RCS d C ti S tRCS and Connecting Systems


– Added statement to address PSI and ISI of Class 1 threaded fastenersthreaded fasteners

Departures:– None

Additional Notable Changes from ESBWR R-COLA:

PTLR dd d ithi th f th US APWR DCD– PTLR addressed within the scope of the US-APWR DCD

4040

Summary of Changes: FSAR Chap. 6, E i d S f t F tEngineered Safety Features


– Added statement to address PSI and ISI of Class 2 and 3 threaded fastenersthreaded fasteners

– Revised to reflect that seismic margins analyses are based on site-specific SSES f f– Site-specific evaluations of control room habitability: potential DBA releases from Units 1 & 2 on Unit 3 and hazardous chemicals

Departures:– NAPS DEP 14.2(3): Initial Test Program (ITP) Scope

Eliminated construction testing from ITP

41

g

41

Summary of Changes: FSAR Chap. 7, I t t ti & C t lInstrumentation & Controls


– Deleted references to Boric Acid Recycle System– Added controls for UHS freeze protection valves

Departures: None– None

Notable Changes from NAPS R-COLA:– Added site-specific component control and indication for

UHS– Added Post Accident Monitoring variables

4242

Summary of Changes: FSAR Ch 8 El t i PFSAR Chap. 8, Electric Power

Baseline Document: NAPS R-COLA (8.1, 8.2)( )

Differences :8 1 Introduction– 8.1, Introduction

Added new Regulatory Guides issued after DCD and R-COLA submissions

8 2 Offsite Power– 8.2, Offsite PowerDeleted Intermediate SwitchyardProvided site-specific design standards for switchyard and transmission systemand transmission system

4343


Baseline Document: CP R-COLA (8.3, 8.4)( )Differences:

– 8.3, Onsite PowerProvided site-specific information (e g design ofProvided site specific information (e.g., design of station ground grid and lightning protection, one line diagrams)

– 8.4, Station Blackout - None

4444


Departures:p– NAPS DEP 8.2(1): GDC 2 and 4 Applicability

for Off-Site PowerAffects Sections 8 1 8 2Affects Sections 8.1, 8.2

– NAPS DEP 9.5(1): Power Source Fuel Storage Vaults (PSFSVs) Elevation

PSFSVs are partially undergroundAffects Section 8.3

4545

Summary of Changes: FSAR Ch 9 A ili S tFSAR Chap. 9, Auxiliary Systems

Baseline Document: CP R-COLADifferences :

– 9.1, Fuel Storage and Handling - None– 9 2 Water Systems– 9.2, Water Systems

9.2.4 Potable and Sanitary Water – used NAPS R-COLA9.2.5 UHS modified for site-specific changes:9.2.5 UHS modified for site specific changes:

– Basins not ‘mostly’ below-grade– Design basis ambient temperatures– Basin design condition (LOOP vs LOCA) andBasin design condition (LOOP vs. LOCA) and

required volume9.2.9 Non-Essential Service Water – design temperature departure

46

p p

46


– 9.3, Process Auxiliaries,9.3.1 Compressed Gas modified for Gas Farm Building and N2 source (tube trailer)9 3 4 CVCS modified for departure to replace BRS9.3.4 CVCS modified for departure to replace BRS with Degasifier

9 4 HVAC S t– 9.4, HVAC SystemsProvided capacities of heating and cooling coils affected by site-specific conditions

4747


– 9.5, Other Auxiliary Systems, y y9.5.1 Fire Protection System modified for:

– Departure for PSFSVs elevationFP water source from Lake Anna– FP water source from Lake Anna

– Site-specific fire protection program details from NAPS R-COLA

9 5 2 C i ti difi d t i l d ENS9.5.2 Communications modified to include ENS description from NAPS R-COLA9.5.4 Gas Turbine Generator Fuel Oil Storage and T f S t difi d fTransfer System modified for:

– Departure for PSFSVs– NAPS-specific source for fuel oil replenishment

4848


Departures:p– NAPS DEP 9.2(1): Replacement of Boron

Recycle System (BRS) with DegasifierSubsystemSubsystem

Replaced description of Boron Recycle System with description of Degasifier SystemRevised Fire Zone figures for Aux BuildingRevised Fire Zone figures for Aux BuildingAffects Sections 9.2, 9.3, and Appendix 9A

– NAPS DEP 9.2(2): Non-essential Service Water System System Design TemperatureSystem, System Design Temperature

Increased the Unit 3 design temperature for the non-ESW systemAffects Section 9 2

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Affects Section 9.2

49


Departures (cont):p ( )– NAPS DEP 9.5(1): Power Source Fuel Storage

Vaults ElevationChanged the description of the primary fuel storageChanged the description of the primary fuel storage for each emergency power source gas turbine generator as partially below gradeAffects Section 9.5Affects Section 9.5

Notable changes from NAPS R-COLA:– UHS is an active system

No FPS water storage tanks– No FPS water storage tanks

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Documents

North Anna 3 COLA NRC Briefing: June 2010NRC Briefing ... · Summary of Changes: FSAR Ch 2 ( t )FSAR Chap. 2 (cont.) – 2.4,,y gy Hydrology zRevised local probable maximum precipitation