why 3d laser scanning technology lowers brownfield capital construction costs
TRANSCRIPT
Why 3D Laser Scanning
Technology Lowers
Brownfield Capital
Construction Costs
Derwin Cartmel
February 2017
3
• Introduction
• Why 3D laser scanning technology?
• Application Conditions
• Project case studies
• Summary
• Questions
Agenda
CONFIDENTIAL
About Derwin Cartmel
• Piping Supervisor, Kingsport field office
• 25 + years experience with mechanical
and piping design
• 95% or more of projects executed from
Kingsport field office are brownfield
• Actively used laser scanning since 2010
with integration into design tools
• Obtained hardware and software for in-
house services in September 2015
4CONFIDENTIAL
Why 3D Laser Scanning Technology?
• Cost-effective
• Highly accurate
• Improves communication
• Quality control
• Documents as-built conditions
• Improves safety
5CONFIDENTIAL
Application Conditions
6CONFIDENTIAL
Ideal
• Congested areas
• Operating plants
• Areas that are physically difficult to measure
• High degree of dimensional accuracy needed
Limiting
• High vibrations
• Visual obstructions such as steam plumes
• Adverse weather conditions
• Area electrical classification
• Highly active area
Project 1 Conditions
8
Refeed existing building
utilities due to
deterioration
Minimize shutdown
time
Building constructed around 1940
Building full of process equipment
CONFIDENTIAL
Project 1 Execution
9
3,000 feet of 3” and
larger pipe 50%
was 6” - 12”
Install new
headers
Off-site piping design
Laser scanning
for as-built
conditions
Project budget $3.4MM
Shutdown duration 12 days
CONFIDENTIAL
Project 1 Results
10
No rework in pre-shutdown piping
No production shutdowns
$2.7MM completion cost 25% under budget
Achieved 12-day shutdown schedule
CONFIDENTIAL
Project 2 Conditions
12
Replace large high alloy piping in existing
fiberglass vessel
Minimize shutdown time
• 6-day shutdown duration
• Shutdown cost >$500K per day in lost production
Process area constructed in
the 1990s
Existing drawings
outdated and inaccurate
CONFIDENTIAL
Project 2 Execution
13
Remove and reinstall fiberglass vessel within three
24-hour days
Install new pre-fabricated high
alloy piping to new vessel
Use laser scanning for as-built field conditions. Scan new fiberglass
vessel once received from
fabricator
$1.34MM Budget
CONFIDENTIAL
Project 2 Results
14
No rework of shutdown piping work
Piping was reworked prior to shutdown to match new fiberglass vessel as-built conditions
Project completed within 3-day schedule
$1.4MM actual cost
• 4.5% increase over budget
CONFIDENTIAL
Project 3 Conditions
16
Replacement of high alloy vessel and associated
piping
Two scheduled shutdowns
• 5 days and 14 days
Process area constructed in the 1980s
Existing drawings
inaccurate and outdated
CONFIDENTIAL
Project 3 Execution
17
Pre-fabricated piping
installation and vessel
repairs
Laser scanning for as-built field conditions
Laser scanning integrated
with 3D modeling
$4.2MM budget
CONFIDENTIAL
Project 3 Results
18
No rework on shutdown piping
Project completed on schedules
Completed for $3.75MM12% under budget
CONFIDENTIAL
Benefits of Laser Scanning Technology
20CONFIDENTIAL
• Reduces engineering field
work
• Reduces errors and rework
• Improves safety and
schedule conformance
• Promotes work sharing
• Improves model and
constructability reviews
• Reduces costs
Limitations of Laser Scanning Technology
21CONFIDENTIAL
• Subcontract administration
• Scheduling
• Permit requirements
• Equipment and software costs
• Line of sight
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