texas surveys april 2010

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

Simon.Atkinson@Texas-Surveys.com

www.Texas-Surveys.com