lower baker presentation (1)
TRANSCRIPT
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LOWER BAKER
UNIT 4
POWERHOUSE
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INTRODUCTIONS
DANNY ROBERTSFIELD ENGINEER
JASON MCLAUCHLINPROJECT ENGINEER
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PROJECT TEAM
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32 MW Francis Turbine/Gen
1000 Steel Lined Power Tunnel
Subterranean Concrete Structure
and Tailrace: 7,949CY placed Mechanical and Electrical Building
Systems
Integrated Facility Controls of
Units 3 and 4 Upgraded Unit 3 controls and
Governor
Synchronous Bypass
THE PROJECT
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Manage In-streamFlows of the Baker andSkagit Rivers
Restore FacilityGenerating CapacityLost in 1960s landslide
Maintain Water Supplyto Lower Baker AdultFish Trap
PROJECT GOALS
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Design-Build Delivery
Collaborative Team Approach
Focus on achieving PSEsperformance requirements
Phased Design and
Construction
PROJECT STRATEGY
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CONSTRUCTION
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PHASE I - EXCAVATION
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PHASE 1 EXCAVATION
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PHASE 1 EXCAVATION
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PHASE 1 EXCAVATION
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PHASE 1 EXCAVATION
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PHASE IITUNNELING
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PHASE II - TUNNELING
Surge Shaft Tie In
1000LF
Drill and shoot 12 dia steel lining
Full Penetration Welding
Carboline Coating
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PHASE II - TUNNELING
Unit 4 Tie-In
Bottom of 270
Surge Shaft
50LF in 22day
shutdown
Laser Scanned
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PHASE II - TUNNELING
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PHASE II - TUNNELING
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PHASE II - TUNNELING
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PHASE IIIPOWERHOUSE
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PHASE III - POWERHOUSE
Draft TubeElbow
Liner
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PHASE III - POWERHOUSE
Scrollcase andStay Vanes
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PHASE III - POWERHOUSE
Inlet Pipelowering
into
position forfit up to
Scroll Case
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PHASE III - POWERHOUSE
Fitting PitLiner onto
Scroll Case
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PHASE III - POWERHOUSE
Structural work builtconcurrently with
embedment of
turbine components
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PHASE III - POWERHOUSE
GeneratorFoundation Core
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PHASE III - POWERHOUSE
Removable Draft Tube Cone Tripping Runner/Turbine Shaft
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PHASE III - POWERHOUSE
Installing Wicket Gates Runner and Turbine Shaftlowered onto Bottom Ring
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PHASE III - POWERHOUSE
LoweringHead Cover
over the
TurbineShaft
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PHASE III - POWERHOUSE
LoweringBottom Ring
into
Powerhouse
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PHASE III - POWERHOUSE
LowerBearing
Bracket
and Statorprepped
for Rotor
install
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PHASE III - POWERHOUSE
Tipping the Rotor 90tons
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PHASE III - POWERHOUSE Shaft Coupling
Lower Bearing Assembly
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PHASE III - POWERHOUSE
Installingthe Slip Ring
Housing
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PHASE III - POWERHOUSE
Turbine Pit and Coolingwater piping systemsnearing completion
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PHASE III - POWERHOUSE
Gate Guides for theDraft Tube Gate
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PHASE III - POWERHOUSE
GSU andTransmission
Structures
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PHASE IVTAILRACE
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PHASE IV - TAILRACE
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PHASE IV - TAILRACE
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PHASE IV - TAILRACE
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FINISHED PRODUCT
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Tunneling Operation Extremely Accurate
Achieved all Tolerances in Stacking Unit
Digital Upgrade of Unit 3 Control Room and
hydraulic system Commercially Operational 100 days ahead of
schedule
Successful Overall Design Coordination withOwner provided Unit
No interruptions to ongoing Unit 3 generation
SUCCESSFUL PROJECT
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LOWER BAKER
UNIT 4
POWERHOUSE
QUESTIONS?
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