2. Tools and Services for Projects
OMS - Pipe measurement
specialists
When every fraction of a
millimetre makes a
difference
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3. Stages where OMS tools and services
can be used in projects
First stage – Pipes
End Dimensioning, Straightness, Squareness, Bevel, SCR
Architecture, Counterbore Planning, Visualisation
Software
Second stage – Pre-welding activities
Internal and External Hi-Lo, Dynamic Fit Up Management
for Flowlines
Third stage – Post-welding activities
Weld Scanning, External Weld Flushing, Video Inspection
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5. Stage 1. – Pipe End Dimensioning
Why perform end dimensioning?
Better fit up (Flowline, SCR or Fatigue String architecture)
AUT Cal Block Sorting
Counterbore planning
More efficient welding
Why use OMS?
Fastest tools, most accurate, fundamentally better than
calipers, traceable measurements, most experienced partner
Where is pipe end dimensioning performed?
Pipe Mill, Coating Plant, Dockside, Spoolbase, Pipelay Vessel
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7. Stage 1. Pipe Straightness
Why check straightness?
Quantifying pipe bend and hooking
Ensuring the double joints are straight
Proving contract compliance
Ensuring that spooled pipes are straightened correctly
without wasting material by checking on deck
Why use OMS tools?
Fast, accurate, repeatable, traceable, easy to use
When are pipes checked for straightness?
Before and after welding and after spooling
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9. Stage 1. Pipe End Squareness
Why check end squareness?
Avoidance of out of straight pipe joints
Stress reduction for fatigue senstive pipes
Higher speed welding as time is not wasted rotating pipes to
obtain a zero gap
Proof of contract compliance
Why OMS tools?
Fast, accurate, repeatable, traceable, easy to use
When are pipe ends checked for squareness?
Following the bevelling station
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10. Stage 1. Bevel Checking
Land thickness, depth and angle
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11. Stage 1. Bevel Checking
Why check bevel geometry?
Ensures that bevel geometries are within specification
Documentation of specification compliance
Better welds due to consistent land depths, angles and land
thicknesses
Why Use OMS Tools?
Fast, accurate, traceable, repeatable, lasting record
When are bevels checked?
Just after bevelling before the firing line
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13. Stage 1. Fatigue String Planning
Why create a Fatigue String Architecture?
Best possible fit up
Counterboring is undesirable or impossible
No loss of material
Why OMS?
Experience of many complex strings
Tools and software
When is Fatigue string design carried out?
From pipe manufacture to after coating
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15. Stage 1. Counterbore Planning
Why do Counterbore Planning?
Counterboring is required to manage wall thickness
A single counterbore size is not possible due to WT
issues
Improved management of welding process
Why OMS?
Experience managing complex multiple SCR projects
When is counterbore planning carried out?
At any stage between pipe manufacture and pipe
yard
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16. Stage 2. – Pre-welding activitites
ID Hi-Lo – Closed Gap
ID Hi-Lo – Open Gap
OD Hi-Lo
Dynamic Fit up for Flowlines
Fit up for SCR or Fatigue Sensitive String
Visualisation of pipe end data
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18. Stage 2. ID HiLo Closed Gap
Why measure ID Closed Gap Hi-Lo?
Longer fatigue life
Less likelihood of a Hi-Lo problem related cut out
Contract requirement
Why use OMS tools?
Faster, accurate, repeatable, traceable
When are ID Hi-Lo’s measured ?
Directly before welding
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20. Stage 2. ID HiLo Open Gap
Why measure ID Hi-Lo?
Longer fatigue life
Less likelihood of a Hi-Lo problem related cut out
Contract requirement
Why use OMS tools?
Faster, accurate, repeatable, traceable, lasting record
When are ID Hi-Lo’s measured ?
Directly before welding
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21. Stage 2. OD Hi-Lo Measurement
Micrometer
Head
Magnetic
Base
Precision
Sliding Rails
OD
HiLo
Pipe 1 Pipe 2
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22. Stage 2. OD HiLo Measurement
Why measure OD Hi-Lo?
Longer fatigue life
Contract requirement
Why OMS tool?
Accurate, repeatable, faster, traceable
When are OD Hi-Lo’s measured ?
Directly before welding
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23. Stage 2. Dynamic Fit Up Planning
Enter Pipe Numbers
Rejected Pipe
Rack Firing Line Welding Stations and AUT
etc
Ready rack
Beveling
shed OMS Software
used here
Unloading
rack
Loader - Loader - Get Fit up
empty full
results
Pipe Yard
Hi-Lo maps
+ Pass/Fail
Pipe stacks contain
measured pipes awaiting
welding
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24. Stage 2. Dynamic Fit Up Planning for Flowlines
Why fit up pipes in this way?
The solution achieves the best possible fit up of pipes
Philosophy:
Measure + Visualisation Software = Best Fit-Up Achievable, Quicker and Easier
Solution can be tailored to meet client needs
Best fit up because actual pipe geometry is used to achieve solution
Minimises logistics necessary to achieve best result
OMS package includes operator training
Why use OMS
Proven system (saving time and money) and easy
implementation
When is the the OMS dynamic fit up scheme used?
Near to the firing line or near to the pipe load out
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25. Stage 2. Fit Up for SCR or Fatigue Sensitive String
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26. Stage 2. Fit Up Visualisation
OD HiLo graph at
current rotation.
These buttons
ID HiLo graph at “nudge” the
current rotation. rotation.
Fixed and Free end
pipe IDs along with
there diameters.
Buttons to
automatically select
the Best ID, OD or
combined fitup
rotation.
Click here to Return to
Fitup status indicators. See the pipe end selection
Current rotation from datum Max ID and OD HiLos at the current further documentation. screen.
rotation along with OK/Fail indicators.
27. Stage 2. Fit up Visualisation
Why Visualise Pipe End Data?
View measurement data for any pipe end
Pipe statistics e.g. Average, Min or Max, Internal and Outer
Diameter, Wall Thickness
View simulated fit up of pipes
Best Fit up pipes in spoolbase, on JLay/SLay vessel
Best ID only fit up, or ID and OD fit up
Why OMS?
Proven tools, software and services
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29. Stage 3. Internal Weld Scanning
Why perform internal weld scanning?
Elimination of weld defects
Reduction in cut outs at AUT station
Contract requirement
Why OMS Tool?
Fast, extremely high quality images, accurate, recordable
data
When to inspect internal welds?
After welding of DJ, in firing-line after hot-pass, in JLay tower,
at stalk tie-in
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30. Stage 3. Weld Flushing
Measure the depth to
which the weld is
ground off
Gauge mounted on
movable carriage to
measure across the
weld zone
Magnetic mount to pipe
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31. Stage 3. Weld Flushing
Why measure weld cap height and flushing?
Reporting to client
Stronger weld
Contract compliance
Why use OMS tool?
Accurate direct measurements, traceable, repeatable
When to measure weld cap flushing?
After grinding before AUT inspection
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33. Stage 3. Video Inspection
When is video inspection required?
Pipelines, Manifolds, etc.
Close-up views of hard to access features
QA/QC
Why use OMS?
Experience, best technology on the market
When to use video inspection?
Dependent upon customer needs
Individually designed to meet specifications
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34. Summary
OMS tools and services can be
used at three stages:
1. On 12 metre pipes
2. In the process of preparing
for welding
3. After welding
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35. We’re Here to Help!
US Office
Tel: 832 230 0153 or 713 594 2515
Email: Lauren.Lionberger@omsmeasure.com
17421 Village Green Drive Business Centre, Houston, Texas, USA
UK Office
Tel: +44 (0) 1279 656038 or +44 7929 777286
Email: Hugh.Davies@omsmeasure.com
11 Twyford Business Centre, London Road, Bishop’s Stortford,
Hertfordshire, CM23 3YT, UK
Website: www.omsmeasure.com
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