scope seismic retrofit of building replacement of three, 40 mw generating units replacement of all...
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Use of 3D Visual Technologies for Major Powerplant Rehabilitation
February 2014
Rehabilitation of 120 MW Powerplant
Scope• Seismic Retrofit of Building• Replacement of three, 40 MW
Generating Units• Replacement of all Mechanical and
Electrical Systems • Rehabilitation of Tunnels • Regrading Abutment Slope/Road
Relocation • Intake Gates/Draft Tube Gate Addition • Architectural Upgrades and Finishes
3D Visual Technologies as Design Tools
Challenges • Old Facility with Poor Construction Documentation• Confined and Cramped Powerhouse• Operating Powerplant During Construction - Phased Construction
3D Visual Design Aids• 3D Survey
– High Definition Survey (Laser Scan) of Powerhouse– TruView – Overlay 3D Point Cloud on Panoramic photo - identify points/ measure
distances.
• 3D Design – REVIT – 3D Design and Building Information Modeling (BIM) for Powerhouse M&E
Design – Navisworks - Clash Detection – Civil 3D– Autodesk 360 – Cloud Rendering
3D Survey Technologies – HDS
High Definition Survey (HDS) - Laser Scan• Triad Associates (Kirkland, WA) – 4 Man Crew • Full Survey - 5 Days • 290 Setups - Inside and Outside• Cost $130,000• Deliverable- 3D Point Cloud with Leica TruView • 3D Model Generation -$80,000
Benefits• Precision Measurements (± 6 mm)• Full 3D Point Cloud - All Areas • Measurements at your Fingertips- Fewer
Visits to Site• Verification with As Builts - Overlay on
Theoretical Model to Identify Discrepancies
3D Survey Technologies - HDSPowerhouse Point Cloud Fly-Through
3D Survey Technologies - HDSTruView –Measuring Tool
POINTCLOUD
TRUSS IN REVIT MODEL
3D Survey Technologies - HDS
3D Survey Technologies – Underwater HDS
• Underwater laser scanner technology by Newton Labs captures as-built measurements with sub-millimeter precision, as well as being able to quantify cracks, rust, wear, fissures, corrosion, weld deterioration, pitting and other deformities.
• Similar in use to air laser scanners, the Newton Underwater Laser Scanner is tuned for the aquatic environment and produces a dense point cloud easily converted into a CAD model using industry standard software.
A Model M210UWUnderwaterLaser Scanner
www.newtonlabs.com
3D Design Technologies
AUTODESK REVIT (BIM) - 3D Design Tool
• Features & Capabilities• Differences vs. Conventional CAD software• Benefits over Conventional Workflow• Use of Features to Aid in Project• Cost vs. Traditional
I. Parametric ModelingII. Entire Project in a single model (Views, Schedules, Sheets, …)III. Worksharing and Collaboration I. Minimal inconsistencies in viewsII. Fully annotatable, understand real world unitsIII. Intelligent objects vs. plain line workI. Consistent, well-coordinated DesignII. Object oriented, no layer management from user sideIII. Typical Nuisance CADD Issues are handled automatically IV. Easy visualization, what you see what you getV. Project data embedded into the model
I. Clash detectionII. Visualization III. Phased Construction IV. Extract & sort data in a form of database query (such as QTO,
schedules, sheet index, …)
I. Job estimated as conventional designII. 3D Design plus training of 4 staff members - met budget III. Future benefits – model available for Contractor use / Plant
management
ELECTRICAL POWER SYSTEM
Model Screenshots
Powerhouse Renderings
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