Westinghouse SMR & Nuclear Fuel Overview · Integral Reactor Vessel Integral pressurized water single >225 MWe reactor ... Westinghouse AP1000 ...

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Westinghouse SMR & Nuclear Fuel Overview

Carlos Leipner, Westinghouse VP Latin AmericaCarlos Leipner, Westinghouse VP Latin AmericaPresented at LAS-ANS July 2014Rio de Janeiro, Brasil

© 2014 Westinghouse Electric Company LLC All Rights Reserved

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© 2014 Westinghouse Electric Company LLC, All Rights Reserved.


Market Drivers for Nuclear & SMRsMarket Drivers for Nuclear & SMRs

The energy industry demands versatilityThe energy industry demands versatilityThe Westinghouse SMR delivers:• A replacement for aging fossil fuel plantsA replacement for aging fossil fuel plants• A solution for the needs of small utilities• A solution for remote and grid limited applicationsA solution for remote and grid limited applications • A design with the ability to load follow and adjust to varying

grid load swings• An economic and clean generation solution for the industry• A balanced energy portfolio

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Design PhilosophyDesign Philosophy• Enhanced safety and security

– Based on tested & licensed passive safety systems– Reactor & safety systems below ground

• Best opportunity for cost competitivenesspp y p– Most power with the least amount of material– Entirely modular design– Rail, truck and barge transportable, g p

• Speed to market– Proven ability to design, license and deploy

reactorsreactors – Existing technical skills, licensed technologies and

fuel supply– Designing to eliminate supply chain bottlenecksDesigning to eliminate supply chain bottlenecks

The most economic SMR

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Sub‐modules forming the NSSS island


AP600TM Pl t AP1000® Pl t PWR D i ChAP600TM Plant AP1000® Plant PWR Design Changes

• Increased core length & number of assembliesg• Increased size of key NSSS components

– Increased height of Reactor Vessel– Steam Generators– Larger canned RCPs

L P i– Larger Pressurizer• Increased Containment Height• Capacity increases in passive system pipe size and in passive safetyCapacity increases in passive system pipe size and in passive safety

system components• Turbine Island sized to increase power rating - 3 LP Turbines

AP1000® Plant Retained the AP600TM Plant Nuclear Island Footprint

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AP1000® Plant SMR Design ChangesAP1000® Plant SMR Design Changes

• Eliminated Reactor Coolant Loop Piping – SMR – Integral Reactor p p g g• Large, Free Standing, Steel & Concrete Containment Changed to Small

Diameter High Pressure Steel Containment• Relocated CRDMs Inside Reactor Vessel• Integrated PRHR Heat Exchanger into Core Makeup Tanks• Complete Revision to Nuclear Island layout with Containment Located

Underground – Tiny Footprint• Dramatic Increase in the use of Large Structural Modules• Dramatic Increase in the use of Large Structural Modules• Eliminated accumulators. Provides 4 Core Makeup Tanks

SMR Retains the AP600TM Plant and AP1000®

Plant Passive Safety Approach

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The Westinghouse SMRD i F t O i

• Packages Existing Technology Developed for the AP600TM Plant and

Design Features Overview

g g gy pAP1000® Plant PWR to meet the Demands of the SMR Market

• Less than 300MWe• Rail Shippable ComponentsRail Shippable Components • Integral PWR• CV and Rx Below Grade• Extended Coping for SBO – 7 Days• 10 year Deployment

• Westinghouse Advantage• Westinghouse Advantage• Employ Compact Containment to address Economy of

Scale ChallengeM t P f th L t A t f B ildi & E i t• Most Power for the Least Amount of Buildings & Equipment

• Shortest Development Cycle/Reduced Licensing Risk• Modular Construction – <30 Month Construction Schedule

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The Westinghouse SMRI t l R t V l

• Integral pressurized water reactor— Pressurizer

Integral Reactor Vessel

Integral pressurized water reactorsingle >225 MWe reactor

• Standalone unit; no shared systemsI ti k i f Steam Generator• Innovative packaging of proven components

• The highest levels of safety with fewer

Steam Generator

g yaccident scenarios

• Leverages AP1000® plant passive safety system designssafety system designs

• Compact reactor coolant system andcontainment100% M d l N l P Pl

Reactor Coolant Pump

• 100% Modular Nuclear Power Plant

Fuel

Control Rod Drive Mechanisms (CRDMs)

An Engineered, Economic Solution for Today’s Clean Energy Challenges

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The Westinghouse SMRHi h P C t i t V l

Specifications

Th l O t t 800 MWt

High Pressure Containment Vessel

Thermal Output 800 MWt

Electrical Output >225 MWe

Passive Safety Systems No operator intervention required for 7 days

Core Design 17x17 Robust Fuel AssemblyCore Design 17x17 Robust Fuel Assembly8.0 ft. Active Length< 5% Enriched U23589 AssembliesSoluble Boron and 37 Internal CRDMs24-Month Refueling Interval

Reactor Vessel Size Outer Diameter: 12 ft.Height: 81 ft.

Upper Vessel Package 280 Tonspp g

Containment Vessel Size Outer Diameter: 32 ft.Height: 91 ft.Fully Modular Construction

Reactor Coolant Pumps 8 External Horizontally Mounted PumpsReactor Coolant Pumps 8 External, Horizontally-Mounted PumpsSealless Configuration

Steam Generator Recirculating, Once-Through, Straight-Tube

Pressurizer Integral to Vessel

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Instrumentation and Control Ovation®-based Digital Control System


The Westinghouse SMRH S ll i S ll?How Small is Small?

25 Westinghouse SMR Containment Vessels fit inside a single AP1000®

Plant Containment Vessel

A Compact Containment Addresses the Economy of Scale Issue for

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A Compact Containment Addresses the Economy of Scale Issue for Lower Output Power of SMR


Westinghouse SMRM d l it A hModularity Approach

Aggressive Modular Approach Reduces Construction Duration and Allows Flexibility in the Schedule

Leverages AP600TM Plant/AP1000®

Plant Structural Module Designs

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Plant Structural Module Designs


AP1000 Plant Modular ConstructionAP1000 Plant Modular ConstructionAn Innovative Approach Unique in our IndustryAn Innovative Approach Unique in our Industry

I d Q lit C t l d Effi i

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● Improved Quality Control and Efficiency● Reduced Construction Schedule and Optimized Costs


S Si P Ti L ViSanmen Site Progress: Time Lapse View

2009 to 2014

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Westinghouse SMR

Refuel ConceptsFuel Cycle Concepts & Approach

p• Complete core off-load• 24-month operating cycle

Li it f li t d ti• Limits refueling outage duration• Uses traditional refueling methods• Transfers single fuel assembliesTransfers single fuel assemblies• Derived handling equipment from existing

designs• Leverage experience of operating fleet

and AP1000® Plant• Uses spent fuel storage with transition to• Uses spent fuel storage with transition to

dry storage Use Existing Technology and Proven Licensing Basis to Reduce Development

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Time and Licensing Risk


Load Follow Capability• The Westinghouse SMR is designed to

respond to various load change transientsrespond to various load change transients– Daily and weekend load follow

operationsExtended reduced power operation– Extended reduced power operation

– Grid frequency response (load regulation)

L d f ll i ili MSHIM™• Load follow operations utilize MSHIM™ operating strategy– Power maneuvers accomplished without

cycling of boron systemscycling of boron systems

The Westinghouse SMR is flexible and e est g ouse S s e b e a dresponsive to frequent changes in

electrical demands

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SMR Fuel Design: Proven Features, Ease of LicensingWestinghouse Integral Nozzle (WIN)

Top Mounted Core Instrumentation

Skeleton structure E h d di i l t bilit

No potential for loose parts One piece castingInconel Top Grid

RFA2 Mid-Grid Enhanced strength

LM0001WSMR

Enhanced dimensional stability ZIRLO™ thimble tubes Thick thimble tubes Tube-in-tube dashpot design Anti-bowing design prevents IRIOpt. ZIRLO™ Cladding

a ced s e g Enhanced fretting margin ZIRLO™

g g pOpt O C add g

IFBA, ZrB2 Integral FuelBurnable Absorber

Stand-off Piece/Bottom Plenum

Oxide Coated Cladding

Inconel Bottom Grid

Protective Grid (P-Grid)

Low Profile Debris Filter Bottom Nozzle (LP DFBN)

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Based on proven 17x17 RFA design


Westinghouse SMR Fuel• Westinghouse Columbia Fuel Fabrication Facility (CFFF)Westinghouse Columbia Fuel Fabrication Facility (CFFF)

– Located in Columbia, SC, and in operation since 1969– Current fuel manufactured at CFFF provides 10% of all U.S.

l t i itelectricity– CFFF has manufactured fuel assemblies for 8-foot cores– Hydraulic and mechanical testing completed successfullyy g p y

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Westinghouse AP1000® Plant/SMR Fuel Comparison

AP1000 Pl t R R RAP1000 Plant•157 Fuel Assemblies•17 x 17 RFA

R R R

R R R R

R R R R R

R R R R•17 x 17 RFA•14 ft. (~4.25 m) Active Length

R R R R R

R R R R

R R R R R

R R R Rg

•18 Month Fuel CycleSMR

89 F l A bli

R R R R

R R R

R Rodded Location

Feed in Cycle N

Feed in Cycle N-1

Disc. at EOC1 (from SFP)

•89 Fuel Assemblies•17 x 17 RFA•8 Ft (2 4 m) Active sc at OC ( o S )

Feed in Cycle N-2•8 Ft. (2.4 m) Active Length•24 Month Fuel Cycle

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y


Benefits of the Westinghouse SMRProven Technology Basisgy

• Passive safety systems are conceptually similar to AP1000® plant (proven design)

• Digital I&C systems based on AP1000® plant design (provenDigital I&C systems based on AP1000 plant design (proven design)

• Only SMR designer with an approved fuel designO t ith h d t (l ti i k)• One reactor with no shared systems (less operating risk)

• Large, predictable thermal margin of safety• Pump-Driven RCS flow at power results in increased plant p p p

efficiency and increased core cooling certainty during power operations

• Yields the most power with the least amount of material andYields the most power with the least amount of material and equipment

• Fully-modular nuclear generating station design

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The result is a small, affordable, nuclear package that can be competitive with and complimentary to other generating sources around the world


Obrigado!Obrigado!

Questions?Questions?

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Westinghouse SMR & Nuclear Fuel Overview · Integral Reactor Vessel Integral pressurized water single >225 MWe reactor ... Westinghouse AP1000 ...

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