Scope Seismic Retrofit of Building Replacement of three, 40 MW Generating Units Replacement of all Mechanical and Electrical Systems Rehabilitation of.

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