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High Definition Digital Survey
(Laser Scanning)
April 2010
Simon Atkinson281.701.2292
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7 Affiliate Locations Worldwide
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2009 Projects
Simon Atkinson 1994 - 2010 As-Built Data Collection / Laser Scanning Experience
Shell
&
H&K Engineering
Dauphin Island
Alabama
April 2009
How It All Works
The Process
Survey The Registration Targets With A Reflectorless Total Station
The Process
Survey The Registration Targets With A Reflectorless Total Station
How Laser Scanning Works
Scan Area With High Definition Laser Scanner
How Laser Scanning Works
Generate Scan File: This Is Scan Data & Not A Photograph.
How Laser Scanning Works
Generate 3D Model (If Required)
Delivering Value To Our Clients
&
The Project Engineering Team
Laser Scanning
Hale Boggs Memorial Bridge
Zone-1 Close Range Scanning
Internal Structure & Saddles
High Definition Laser Scanning
Z+F Imager 5006
Examples Of Internal Scans Of Zone-1
Registered Scan Data
In a non-orthogonal environment such as the
Hale Boggs Memorial Bridge, the registered scan
data quickly give a true 3D representation of the
real world environment.
Requested Deliverable
Proposed Deliverable
Deliverable: Unigraphics As-Built 3D Model
Client: Feedback
Existing Design Model Overlaid onto As-built Model
Client: Feedback
• Site Definition• Unit Record Sheets (URS)• Site visits (tape measure, photos,
sketches)
• Design Effort • Background (TURB)
file creation
• Issues • Drafting hours for
TURB file creation• Documentation accuracy
– No documentation– Incorrect documentation– Undocumented site
modifications• Site fit-up issues
– Piping, conduit, skids
• Site Definition• Only one site visit• Point cloud data, all measurements
collected
• Design Effort• Background UG model generated
• Benefits• Time Reduction
» Engineering and drafting cycle time (productivity)
• Accuracy – As-Installed configuration
• Cost Avoidance» Reduced outage time» Eliminate Site fit-up & re-work
issues
Current Process with
Laser ScanningOld Methodology
Client: Feedback
The Gray is the Laser Scan Parasolid
The Green is the GE Design Model
Working Closely with Designers is important.
• A small adjustment in position, brought the whole model into perfect alignment.
• The 0.36 inch difference was calculated to be heat expansion / deformation.
Diameter 122.64 inch (3D Parasolid Model)
Diameter 123.00 inch is design dim.
Don’t Panic
How Problems Are Perceived & Getting It Right
DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
DeliverablesAs-Built Models
Points imported directly into laser scanning design software to create As-Built models
Design / Fabrication Comparison & Validation
Yellow – As Designed
Pink – As Built
Design / Fabrication Comparison & Validation
Validate Dimensions
As-Built Modeling
From the Point Cloud Data, 3D
As-Built Models can be created,
and converted to PDS,
SmartPlant Review, AutoCAD,
PDMS, …etc
3D Laser Scan Model
PDMS Model
Direct Import Of Point Cloud Data
Points imported directly into
the design software:
SmartPlant Review, PDMS,
PDS, Microstation,
AutoCAD, NX …etc.
Identifying:
• Tie-In Locations
• Routing Options
• Clash Detection
• Equipment
Identification
Clash Detection / Design Validation
Review New Design Against The
Real World Environment.
Interference / Clash Detection
Tracking And Reporting.
Plot Plan View Of Scan Locations
Accurately Dimension Directly From The 3D Scan Data.
Distances, Center Lines, Diameters, Elevations, …Etc
Navigate Through The Plant Without Leaving The Office
Safely And Quickly Capture Data In Dangerous Environments.
Navigate Safely Through Dangerous Areas
ADDED
VALUE
Increased Safety For All
Faster / More Accurate Data Collection
Better Design & Planning
Reduced Construction Man Hours
Added Value – Project Engineering
Added Value – Project Engineering
Detect Errors Prior To Construction
Reduce Shutdown Time Due To Fit-up Issues
No Dangerous / Costly Scaffolding Required
Added Value – Project Engineering
Traditional Methods Of Data Collection Are ExpensiveIncomplete And Inaccurate
Added Value – Project Engineering
$
Cost Effective Option: Reduced Site Visits For All
Added Value – Project Engineering
Bristol UK – Rhodia HF Unit - Mexichem
Field Work:
3 Person Survey Crew
5 Days on Site Scanning
Data Processing:
1 Office Person
3 Days Conversion / Registration
Case Study #1
Data Collection: Labor + Expenses (UK) $ 28,000.00
1 Week Equipment Rental $ 7,000.00
As-Built 3D Model Production $ 46,000.00
Total $ 81,000.00
As-Built / Back Modeling
3 Designers
6 Weeks
Open Discussion
Contact:
Simon Atkinson281.701.2292
www.Texas-Surveys.com
