Service Safety Quality Innovation
Assessment of Corrosion under Insulation
and Engineered Composite Wraps using
Pulsed Eddy Current Techniques.
• Introductions
• Brief overview of TRAC Oil & Gas Ltd.
• Factors affecting Probability of Detection - Review
• Perceived current challenges
• NDT methods to be verified – Overview and work
carried out to date:
• Radiography,
• Pulsed Eddy-Current (PEC)
Presentation Outline
Established in 1999:
Incorporated in Scotland,
based initially in Aberdeen.
10 years of growth & diversification.
2009 creation of group & subsidiary companies.
Group turnover circa £50m.
Steady state and controlled growth for initial 10
years, accelerated growth following 2009
reorganisation.
TRAC Oil & Gas:
Turnover circa £15m
Rope Access
Engineering Support
Inspection & Testing
Remote Inspection
Marine Class Survey
& Repair
Mechanical &
Electrical Trades
Rigging & Lifting
Fabric Maintenance
Fire Protection
Systems
Training
Services
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Accreditations & Approvals
ISO 9001: 2008 ISO 14001: 2004 ISO 18001: 2007 ISO 17020:2012
Full Member
Accreditations
Memberships & Affiliations
Class Approvals & Hull Thickness Measurement Approvals
402a 402b
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Perceived Current Challenges
In-Service Inspection relative to:
• Corrosion Under Insulation (CUI)
• Evaluation of Remaining Wall Thickness
under Blisters/Surface Scabs
• Inspection of and through Composite
Engineered Wraps
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017 7
Competency of the Company & Personnel
Well developed and verified procedures
Appropriate Acceptance Criteria
Effective scanning of the component -
• Area of the reflecting surface
Orientation of the defect
Shape of the defect
Factors Affecting Probability
of Detection (POD)
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
The Owner / End User is the responsible party irrespective of
any construction / maintenance / consultancy contracts etc. that
might be in force)
The Owner / End User verifies that the NDT Contractor
(Employer) is competent to carry out the contractual
requirements.
The Employer is responsible for ensuring Inspection Personnel
meet the competency requirements of the contract.
Who Decides What to Use?
Compliance Responsibility - Roles &
Responsibilities
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
The inspection body should demonstrate that it has management
control over the following stages in order to demonstrate that it
has the personnel necessary to undertake the range of inspection
activities covered by its scope of accreditation:
Identify the range of inspection activities,
Identify the competence required for each activity,
Train & assess against the competence criteria,
Authorise persons for activities under appropriate supervision,
Monitor performance of persons to re-assess competence
Inspection Bodies
Companies accredited in accordance with:
ISO/IEC 17020:2012
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
What are we looking for &
how do we know we will find it?
This is the pre-requisite for all Inspection /
NDT activities.
Identify what the degradation process is likely to be and apply
the most appropriate method/technique to find and quantify it.
Verify the procedure under site conditions – coating / surface
condition, real degradation – not artificial flaws or verify that
the artificial flaws truly represent the expected degradation.
NDT personnel competent to carry out the activities?
Certification is not a measure of competence
Project consists of:
• Market survey and evaluation of Pulsed Eddy-Current
equipment available.
• Source relevant in-service samples with typical and varied
degradation
• In-House research to be verified by competent Third Parties
• Research and source suitable additional and/or alternatives
to Pulsed Eddy-current techniques
• Research and trial suggested innovative methods
Project Outline
Market survey and evaluation of Pulsed
Eddy-Current equipment available.
In total three (3) Pulsed Eddy-Current systems were
evaluated.
Two systems were found to be relevant to our project.
These were Eddyfi Lyft and Maxwell PECT
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Eddyfi LYFT Instrument
• Materials:
Carbon steel
• Lift-off range:
up to 300mm (12”)
• Wall thickness:
up to 100mm (4”)
• Weather jackets:
Aluminium, stainless steel, galvanised steel
• Probe:
PEC-089-G2-HT05S
Footprint 95.2 mm
Circumferential Footprint 124.5mm
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
MAXWELL PECT Instrument
• Materials:
Carbon steel and low-alloyed steel
• Lift-off range:
0 – 250 mm (0-10”)
• Wall thickness range:
3 – 50 mm (0.12”-2”)
• Insulation covers:
Non metal, aluminium and stainless insulation covers; limited galvanised weather sheeting
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Due to our positive experiences offshore using
radiographic techniques we introduced this method
to the project. Examples below:
Radiography
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Radiography
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Radiography
Initial trials with Sentinel QSA Global Open Vision
equipment.
Unsuccessful due to Safety issues
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Radiography
Two Digital Detector Array (DDA) systems were evaluated
Little or no difference in technical performance
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
The project continued combining Pulsed
Eddy-Current & Digital Radiography
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
PEC Probe
Phase 3 The reception phase during which magnetic sensors measure the decay of
the eddy currents as they diffuse into the material thickness
Phase 2 The cut-off phase which induces strong eddy currents into the component When
the magnetic field emission is stopped abruptly
Phase 1 The emission phase (the pulse) during which the probe injects magnetic fields
that penetrate and stabilize in the component thickness
Principles PEC
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Footprint Definition
• The footprint is the sensitivity area of the probe on the inspected component.
• The size of the footprint is affected by:
• The probe size and configuration
• The coating\insulation thickness
• The jacket material
• The WT of the component
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
PEC v UT
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
PEC v UT
• Averaging Effect
• Point 1 a Dip
• Point 2 A Peak
• Point 3 PEC Averaging
1
2
3
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Initial Work
Sample : Pipe OD 323mm
Thickness: 8.3mm
Length 1200mm
Engineered Composite Wrap 9mm
• Sample inspected after being removed
from service (picture 1)
• After inspection a section of pipe was
cut and the ID exposed to reveal a
large scabbed area after initial
cleaning. (picture 2)
(Pic 1)
(Pic 2)
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Initial Work
• The Pipe was sent for cleaning and on return reviled the sever corrosion on the ID at
what was the 6 O’clock position (picture 3)
(Pic 3)
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Initial Work – Anomaly Report
• The original anomaly report identified two areas
• Area of anomaly A 80mm x 30mm 6 o’clock position 5.2mm minimum
• Area of anomaly B 20mm x 30mm 6 o’clock position 4.9mm minimum
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Initial Work – PEC Results
• PEC Results show large area of general wall loss containing deep pitting along the
length. The minimum reading recorded by the PEC 4.2mm.
(picture 3)
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0 120.0 130.0 140.0 150.0 160.0 170.0 180.0 190.0 200.0 210.0 220.0 230.0 240.0 250.0 260.0 270.0 280.0 290.0 300.0 310.0 320.0 330.0 340.0 350.0 360.0 370.0 380.0 390.0 400.0 410.0 420.0 430.0 440.0 450.0 460.0 470.0 480.0 490.0 500.0 510.0 520.0 530.0 540.0 550.0 560.0 570.0 580.0 590.0 600.0 610.0 620.0 630.0 640.0 650.0 660.0 670.0 680.0 690.0 700.0 710.0 720.0 730.0 740.0 750.0 760.0 770.0 780.0 790.0 800.0 810.0 820.0 830.0 840.0 850.0 860.0 870.0 880.0 890.0 900.0
0.0 7.2 7.8 7.3 7.4 7.8 8.1 7.9 8.2 8.1 8.1 8.3 7.7 7.9 7.8 8.2 7.8 8.0 8.2 8.3 7.6 7.6 7.5 7.5 7.8 7.8 7.8 7.6 7.5 7.6 7.7 7.6 7.7 7.9 7.9 7.6 7.6 7.7 7.6 7.8 7.7 7.8 7.7 7.7 7.7 7.7 7.5 7.8 7.9 8.0 8.1 8.0 7.9 8.0 7.9 7.9 8.0 8.0 8.0 8.2 7.9 7.8 7.7 7.8 8.2 8.1 7.9 7.7 7.8 7.9 7.6 7.9 7.5 8.1 8.0 8.3 7.1 7.7 7.3 7.5 7.4 8.1 7.9 7.7 7.4 7.5 7.4 8.0 8.0 7.9 7.6
25.3 6.9 7.5 7.7 7.8 7.8 7.6 7.7 7.9 8.0 8.1 8.4 8.3 7.1 7.8 7.5 7.8 7.5 7.8 7.6 7.6 7.4 7.4 7.2 7.6 7.1 7.5 7.7 8.2 7.8 7.5 7.2 6.9 7.9 7.6 8.1 7.6 7.6 7.3 7.7 7.1 7.6 7.7 7.8 7.7 7.4 7.6 7.5 7.8 7.7 8.0 8.3 7.9 8.2 7.7 7.8 7.7 7.9 8.2 7.8 8.4 8.1 7.9 7.7 8.2 8.0 8.1 8.0 8.1 7.6 7.6 7.7 7.6 7.5 7.9 7.5 7.9 7.7 7.5 7.4 7.5 7.5 7.7 7.9 7.8 7.6 7.4 7.3 7.6 7.7
50.7 7.7 6.7 7.5 7.2 7.6 7.6 7.7 7.9 7.8 7.7 7.1 7.1 6.9 7.5 7.2 7.3 7.5 6.8 6.6 6.9 7.1 7.8 7.0 7.4 7.0 6.7 6.9 6.9 7.4 7.0 7.6 7.5 7.6 7.5 7.2 7.2 7.1 7.3 7.5 7.4 7.5 7.1 7.4 7.0 7.1 7.7 7.7 7.7 7.8 7.8 7.3 7.7 7.4 7.7 8.0 7.8 7.9 7.9 7.5 7.6 7.5 8.0 8.0 7.9 7.9 7.7 7.5 7.6 7.6 7.7 7.7 7.9 7.6 7.7 7.5 7.7 7.4 7.6 7.3 7.7 7.5 7.5 7.4 7.4 7.0 7.6 7.5 7.9
76.0 6.9 6.8 7.5 6.8 7.1 6.6 6.7 6.7 6.8 7.1 7.5 7.1 6.7 6.7 6.4 6.5 6.9 6.4 7.2 7.1 7.0 6.1 5.9 6.8 6.8 6.7 6.7 6.0 6.6 6.2 6.4 6.5 7.0 6.9 7.2 6.7 7.0 6.7 6.2 6.6 6.8 6.7 6.9 7.2 6.8 6.8 6.5 7.1 7.1 7.4 7.3 7.5 7.0 7.1 6.8 7.2 7.0 7.3 7.2 7.7 7.4 7.2 7.2 7.2 7.3 7.4 7.3 7.6 7.5 7.0 7.3 7.1 7.1 7.9 7.4 7.5 7.3 6.9 7.0 7.1 7.3 7.1 7.7 7.0 7.4 7.4 7.2 7.6
101.4 6.6 5.9 6.2 5.9 6.5 6.5 6.7 6.7 6.7 5.8 6.4 5.5 5.9 6.2 6.2 6.3 6.7 6.2 5.6 5.6 5.9 6.2 6.1 6.0 6.1 5.9 6.5 6.1 6.3 6.6 6.5 7.1 7.0 6.4 6.5 6.6 6.0 6.1 6.5 6.1 6.6 5.7 6.1 6.1 6.2 6.4 6.6 7.0 6.9 7.0 6.8 6.7 6.8 6.5 7.0 7.1 6.7 7.0 6.7 6.7 6.8 7.2 7.2 7.2 6.8 6.8 7.0 6.9 7.0 6.9 7.2 7.2 7.1 6.9 6.4 6.5 6.9 6.9 7.0 7.1 7.1 7.3 6.7 7.0 7.1 6.8 7.2 7.1 6.9 7.0
126.7 5.6 5.8 6.2 6.1 5.9 5.9 6.0 6.4 6.4 6.7 6.0 5.8 5.3 5.3 5.2 5.9 6.0 5.9 6.1 5.3 5.0 5.2 5.2 5.7 5.6 5.7 5.9 5.0 5.9 5.9 6.1 5.0 5.8 6.2 5.8 5.2 5.9 5.3 5.0 5.2 5.7 5.9 6.0 6.1 5.1 5.8 5.4 4.8 5.7 5.9 5.8 6.1 6.3 5.7 5.9 5.7 6.3 5.9 5.9 6.2 5.5 6.1 6.3 6.5 6.4 6.3 6.5 6.5 6.4 6.1 6.3 6.6 6.1 6.5 6.1 6.7 6.0 5.9 5.6 6.1 6.5 6.5 7.0 6.0 6.2 6.2 6.1 6.6 6.3 7.1
152.1 5.3 5.2 5.1 5.7 5.9 5.7 6.1 5.8 6.0 5.3 5.0 5.4 5.1 4.8 5.0 5.6 5.5 5.7 4.7 4.9 5.1 5.4 5.4 5.4 5.7 5.6 4.9 5.1 5.2 5.7 6.1 6.2 6.1 5.8 5.7 5.4 4.9 4.7 4.8 5.3 5.3 5.2 5.5 5.4 5.5 5.1 5.5 5.8 5.5 5.6 5.8 5.3 6.0 5.7 5.8 5.6 5.7 5.3 5.4 5.4 5.8 5.9 6.0 6.0 5.8 5.7 5.7 5.2 5.7 5.7 5.7 5.6 5.7 5.4 5.2 5.1 5.2 5.3 5.7 5.8 6.1 6.4 6.0 5.6 6.0 6.0 5.3 6.3 6.0 6.0 6.1
177.4 4.8 4.9 5.2 4.2 4.7 5.0 5.1 5.3 5.5 5.4 5.0 5.4 5.3 5.3 5.2 4.3 5.0 5.4 5.1 5.1 5.0 4.2 4.4 4.7 5.3 5.7 5.6 4.9 4.9 5.5 5.4 5.9 5.7 5.6 6.1 5.8 5.3 5.3 5.3 5.6 4.8 5.4 5.6 5.1 5.2 5.2 5.1 5.1 5.3 5.5 5.0 5.7 5.5 4.8 5.3 5.4 5.3 5.5 5.2 4.8 5.8 5.6 5.4 5.2 5.3 5.5 5.5 5.7 5.1 5.5 5.7 5.6 5.3 5.2 5.3 5.2 4.9 4.7 4.9 4.8 5.3 5.9 6.2 6.2 6.4 5.8 6.0 6.1 5.9 5.7
202.8 5.6 4.1 4.6 4.8 5.3 4.9 5.5 5.5 5.5 5.2 5.0 5.2 5.4 4.6 5.6 5.3 5.6 4.8 4.9 4.3 5.1 5.5 5.1 5.5 5.7 5.1 5.3 5.1 5.4 5.0 5.8 5.6 5.8 4.6 5.4 5.1 5.5 5.7 5.6 5.4 5.7 5.1 5.4 5.3 5.3 5.6 5.2 5.5 5.1 4.9 4.9 5.1 5.2 5.6 5.4 5.2 4.9 5.2 5.1 5.2 5.3 5.3 4.7 5.4 5.4 5.3 5.2 5.4 5.1 5.4 5.5 5.3 5.3 4.9 4.5 4.7 4.9 5.3 5.8 6.1 6.2 6.3 5.6 5.7 6.7 6.4 6.7 6.3 6.3
228.1 5.4 5.4 5.0 4.9 5.3 5.2 5.1 5.3 4.8 5.4 5.4 5.4 5.3 5.3 5.7 4.6 5.6 6.0 5.8 5.9 5.3 4.8 4.9 5.4 5.0 5.7 6.2 5.9 5.4 5.3 4.9 5.8 5.9 5.7 6.4 5.7 5.8 5.4 5.2 6.2 5.9 5.9 6.2 5.5 5.6 5.3 5.3 5.2 5.5 5.4 5.5 5.4 5.4 5.2 5.1 5.5 5.7 5.6 5.5 5.2 5.3 5.1 5.1 5.5 5.3 5.4 5.6 5.3 5.8 5.2 5.2 5.5 5.4 5.5 5.3 5.1 5.2 5.0 5.5 5.2 6.2 6.4 6.7 6.4 6.7 6.8 6.5 6.8 6.8
253.5 6.2 3.3 6.1 5.4 5.9 5.5 6.1 5.9 5.8 5.3 5.4 5.1 6.5 6.2 6.7 6.5 6.5 6.0 4.7 5.2 5.5 5.1 6.1 5.8 5.8 5.9 6.0 5.3 5.8 5.9 6.2 6.0 6.1 5.2 6.3 5.7 5.4 5.9 6.1 6.4 6.3 6.0 6.1 6.0 5.5 6.6 5.7 6.2 5.5 6.2 4.7 5.7 5.5 5.8 5.6 5.7 6.1 4.6 5.8 5.1 5.2 5.4 5.8 5.7 5.7 5.5 5.2 5.3 5.6 5.7 6.0 6.2 6.2 5.7 5.7 5.8 5.4 6.1 6.7 6.7 6.7 6.6 6.7 6.5 6.9 7.1 7.0 7.5
278.8 5.6 6.5 6.8 6.9 5.8 6.5 6.1 5.9 6.4 6.6 6.9 6.2 6.3 6.1 6.3 5.5 6.7 6.9 7.0 6.8 5.8 5.7 5.8 6.1 6.5 6.9 7.0 6.9 5.8 6.8 6.1 7.0 5.8 6.9 7.5 7.3 6.5 6.4 6.5 6.5 6.4 7.5 7.3 6.4 7.1 6.6 6.6 7.1 6.3 6.7 6.3 6.4 6.2 6.3 6.3 6.1 6.3 6.4 6.4 6.8 6.2 5.7 5.8 5.9 6.1 6.4 6.5 6.1 6.0 5.8 6.3 6.6 6.7 6.6 6.7 6.6 6.7 6.7 6.2 6.5 6.8 7.1 7.7 7.7 7.6 7.6 7.4 7.5
304.2 6.7 6.3 6.6 7.2 6.7 7.0 7.3 7.7 7.1 7.3 6.7 6.9 6.8 7.1 7.1 7.3 7.2 7.2 7.0 5.8 5.6 6.4 7.2 7.1 7.9 7.7 6.3 7.1 6.6 7.0 7.4 7.2 7.5 7.5 7.0 7.4 6.9 7.1 6.9 7.6 7.9 7.8 6.6 7.2 7.0 7.0 7.2 7.6 7.3 7.4 7.3 7.3 6.7 6.5 6.7 6.7 7.0 7.0 6.9 6.0 6.5 6.5 6.0 6.9 7.0 6.6 6.7 6.4 6.3 6.2 6.4 6.8 7.1 7.0 6.8 6.7 6.6 6.8 6.8 7.1 7.3 7.7 8.2 7.1 7.0 7.2 7.6 8.5 8.2
329.5 6.8 7.5 6.5 7.4 7.5 6.7 7.2 7.7 7.7 7.7 7.0 7.8 6.7 6.8 7.5 6.5 7.5 7.4 7.5 7.0 7.4 6.8 6.8 7.1 7.6 7.7 8.1 7.3 7.2 7.2 7.1 6.9 7.7 7.9 8.2 7.4 7.5 7.4 7.3 7.2 8.0 8.6 8.1 8.3 7.7 7.7 7.4 7.7 8.1 8.1 7.8 8.0 7.4 7.1 7.0 6.9 7.1 7.2 7.4 6.7 6.2 6.4 6.2 6.6 6.1 6.5 6.7 6.4 6.7 6.2 6.4 6.6 6.5 6.8 6.9 7.1 7.4 7.0 7.0 7.2 6.8 7.8 8.3 7.7 7.6 7.8 7.6 7.5
354.9 7.6 7.2 7.6 6.7 7.1 7.6 7.4 8.1 7.6 7.1 7.5 6.7 7.5 6.9 7.6 7.8 7.5 7.8 7.0 7.4 6.7 7.2 7.7 7.7 8.1 8.2 7.7 6.6 6.9 7.2 7.4 8.2 8.2 7.9 7.8 8.1 7.6 7.3 7.9 8.0 7.8 8.0 7.3 8.5 7.6 7.4 8.4 7.6 7.8 7.7 7.4 7.4 6.9 7.0 7.2 6.7 7.2 6.8 6.4 6.2 6.3 6.1 6.1 6.7 6.3 6.2 6.1 6.2 5.9 6.4 6.4 6.7 6.9 7.2 7.0 7.0 6.8 7.2 7.3 7.4 7.6 7.8 7.9 7.8 7.6 7.8 8.0 8.0 8.4 8.2
3 O’clock
6 O’clock
9 O’clock
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Inspection carried out on off-shore facility
Sample : Pipe OD 798mm
Thickness: 6.35mm
Length 750mm
Engineered Composite Wrap 9mm
• Sample inspected off shore still in service.
(picture 1)
(picture 1)
Example 1
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
• The original anomaly report identified many areas of wall loss
• All anomaly's predominantly between 3-9 O’clock positions
• Minimum reading Location 1 3.8mm
• Minimum Reading Location 2 3,6mm
(picture 3)
Example 1
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
• PEC Results show large area of general wall loss containing deep pitting along the
length. The minimum reading recorded by the PEC 4.2mm.
0.0 14.8 29.6 44.4 59.3 74.1 88.9 103.7 118.5 133.3 148.1 163.0 177.8 192.6 207.4 222.2 237.0 251.9 266.7 281.5 296.3 311.1 325.9 340.7 355.6 370.4 385.2 400.0 414.8 429.6 444.4 459.3 474.1 488.9 503.7 518.5 533.3 548.1 563.0 577.8 592.6 607.4 622.2 637.0 651.9 666.7 681.5 696.3 711.1 725.9 740.7
848.7 6.0 6.0 5.9 6.0 6.0 6.1 6.1 6.2 6.2 6.2 6.2 6.2 6.2 6.1 6.2 5.9 5.7 5.9 5.9 5.9 6.1 6.0 6.0 6.2 6.1 6.0 6.0 6.0 6.0 6.2 6.1 6.0 6.3 6.3 6.4 6.4 6.2 6.3 6.3 6.2 6.2 6.3 6.3 6.2 6.0 6.1 6.1 5.6 5.2
808.2 5.8 5.7 5.9 5.9 6.1 6.0 5.9 6.0 6.2 6.2 6.3 6.3 6.2 6.3 6.1 6.2 6.2 6.3 6.3 6.3 6.2 6.4 6.4 6.3 6.3 6.2 6.3 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.4 6.5 6.4 6.2 6.2 5.9 5.9 5.8 5.6 5.3 5.1 5.9 5.4 5.2 5.2 5.2
767.8 5.4 5.2 5.0 4.9 5.1 5.0 5.2 5.2 5.4 5.6 5.7 5.8 5.8 5.8 5.8 5.4 5.6 5.9 6.0 6.2 6.1 6.0 6.0 6.1 6.1 6.2 6.3 6.2 6.1 6.1 6.2 6.1 6.1 6.3 6.3 6.2 6.3 6.2 6.1 6.0 5.9 6.0 5.8 5.7 5.4 5.2 5.2 5.3 4.8 4.4 4.7
727.4 4.0 4.1 4.1 4.1 4.1 4.2 4.3 4.2 4.2 4.2 4.1 4.3 4.5 4.5 4.1 4.1 4.1 4.5 5.0 5.1 5.1 5.0 5.0 5.3 5.6 5.7 5.6 5.2 5.1 5.2 5.3 5.5 5.3 5.4 5.4 5.5 5.4 5.4 5.3 5.2 5.1 5.1 4.9 4.7 4.5 4.6 4.8 4.9 4.5 4.4 4.5
687.0 3.5 4.1 3.6 3.5 3.7 3.6 3.4 3.5 3.4 3.4 3.6 3.8 3.8 3.6 3.4 3.5 3.8 4.2 4.2 4.5 4.6 4.6 4.3 4.3 4.5 4.7 4.9 4.9 4.7 4.6 4.7 4.6 4.4 4.5 4.6 4.5 4.4 4.5 4.7 4.5 4.4 4.5 4.5 4.5 4.5 4.5 4.6 4.7 4.3 4.2
646.6 3.5 3.4 3.4 3.3 3.3 3.4 3.5 3.5 3.3 3.4 3.6 3.8 3.9 3.7 3.6 3.6 3.5 3.8 4.0 4.1 4.3 4.4 4.4 4.3 4.4 4.6 4.6 4.7 4.7 4.6 4.4 4.5 4.2 4.4 4.4 4.4 4.4 4.5 4.3 4.3 4.4 4.7 4.6 4.6 4.5 4.6 4.7 4.8 4.4 4.1 4.4
606.2 3.6 3.8 3.9 3.8 3.8 3.7 3.8 4.0 4.1 4.0 4.0 4.1 4.0 3.8 3.8 3.8 3.7 3.8 4.1 4.2 4.2 4.2 4.3 4.3 4.3 4.3 4.4 4.6 4.5 4.6 4.5 4.2 3.9 3.9 4.0 4.0 3.7 4.0 4.3 4.3 4.3 4.3 4.3 4.3 4.3 4.4 4.7 4.8 4.6 4.2
565.8 3.6 3.7 3.8 4.1 3.9 3.7 3.9 4.1 3.9 3.9 3.9 3.9 3.9 3.9 4.0 4.0 3.9 3.9 3.9 3.9 3.8 4.1 4.1 4.1 3.9 4.0 4.2 4.2 4.2 4.3 3.9 3.8 3.7 3.8 3.8 3.6 3.6 3.9 4.2 4.1 4.3 4.1 4.2 4.1 4.2 4.3 4.7 4.7 4.1 4.3
525.4 4.1 4.0 3.7 4.0 4.1 4.2 4.2 4.1 3.8 3.7 3.7 3.5 3.7 4.0 4.2 4.1 4.0 3.9 4.1 4.2 4.0 4.1 4.3 4.2 4.0 3.9 4.0 4.2 4.3 4.2 4.1 4.1 3.8 4.3 4.3 4.2 4.1 4.1 4.3 4.3 4.4 4.3 4.2 3.7 3.7 3.9 4.4 4.8 4.4 4.4
484.9 4.4 4.2 4.2 4.1 3.8 4.0 4.1 3.6 3.6 3.7 3.9 3.7 3.7 3.8 3.8 4.2 4.2 4.3 4.1 4.2 4.0 4.1 4.0 3.9 4.1 4.3 3.9 4.0 4.2 4.4 4.5 4.3 4.1 4.2 4.0 4.0 4.3 4.3 4.1 3.8 3.9 4.1 4.5 4.9 4.6 4.5 4.8 4.7 4.5 4.2 4.4
444.5 4.2 4.2 4.2 4.2 4.1 4.0 3.9 4.0 4.1 3.8 3.6 4.0 4.0 4.1 4.0 3.8 3.5 3.6 3.5 3.9 3.9 3.8 3.8 4.0 3.9 3.8 3.7 3.9 4.1 4.2 3.9 3.7 3.5 3.8 4.0 4.0 4.1 3.9 4.0 3.9 3.7 3.8 4.0 4.1 4.0 3.9 3.8 3.7 4.2 4.5 4.4
404.1 4.3 4.1 4.1 4.1 4.2 4.4 4.2 4.0 4.2 4.0 4.0 4.1 3.9 3.9 3.9 4.0 4.1 4.2 4.2 4.3 4.2 4.1 4.1 4.3 4.2 4.2 4.0 3.9 3.9 4.0 4.1 4.2 4.1 4.0 4.0 4.0 4.0 4.1 4.1 4.2 4.0 3.8 3.8 3.8 4.1 4.2 4.1 4.4 4.4 4.7 4.8
363.7 4.2 4.1 4.2 4.1 4.2 4.0 3.9 4.1 4.1 4.1 3.9 4.0 4.2 4.3 3.9 3.7 3.9 4.0 3.7 3.5 3.4 3.8 3.8 3.8 3.9 3.7 3.9 4.0 4.0 3.7 3.6 3.9 3.8 4.0 3.9 4.0 3.8 3.6 3.7 3.7 3.7 3.9 4.1 4.1 3.8 3.6 3.7 4.0 4.4 4.2 4.3
323.3 4.6 4.7 4.2 4.1 4.2 4.2 4.3 4.6 4.4 4.3 4.2 4.4 4.5 4.3 4.3 4.4 4.2 4.3 3.9 3.9 3.8 4.0 4.1 4.3 4.2 4.2 4.2 4.2 4.6 4.6 4.3 4.2 4.5 4.6 4.1 4.1 4.3 4.1 4.3 4.1 4.0 4.0 4.1 4.6 4.5 4.2 4.0 4.2 4.5 4.3 4.2
282.9 4.5 4.5 4.2 4.1 4.1 4.3 4.5 4.5 4.1 4.2 4.3 4.3 4.1 3.5 4.0 4.3 4.2 4.1 4.1 4.1 4.1 4.2 4.1 4.2 4.2 3.9 4.1 4.3 4.2 4.2 4.4 4.4 4.3 4.3 4.3 4.3 4.1 4.3 4.2 4.2 4.3 4.4 4.2 4.1 4.2 4.1 4.2 4.4 4.1 4.2
242.5 4.3 4.3 4.3 4.2 4.2 4.3 4.1 3.8 3.9 4.1 4.0 3.8 3.9 4.0 4.2 4.0 4.1 3.9 3.9 3.9 4.0 4.2 4.1 3.9 4.0 4.3 4.1 4.1 4.1 4.0 4.0 4.1 4.1 4.1 4.0 3.9 3.9 3.8 4.0 4.2 4.4 4.2 4.3 4.5 4.5 4.6 4.4 4.5 4.2 4.3 4.7
202.1 4.5 4.2 4.6 4.6 4.5 4.4 4.5 4.6 4.6 4.5 4.5 4.3 4.3 4.2 4.1 4.3 4.4 4.3 4.0 4.3 4.4 4.4 4.4 4.3 4.4 4.4 4.4 4.3 4.4 4.4 4.3 4.2 4.0 4.1 4.0 4.0 4.0 4.2 4.3 4.5 5.0 4.8 5.0 5.0 4.9 4.9 5.0 4.6 4.5 4.7
161.6 5.4 5.5 5.7 5.3 5.4 5.7 5.7 5.8 5.9 5.8 5.7 5.6 5.6 5.5 5.4 5.6 5.7 5.7 5.6 5.4 5.3 5.6 5.6 5.4 5.5 5.4 5.6 5.3 5.3 5.2 5.4 5.3 5.4 5.4 5.2 5.4 5.6 5.5 5.2 5.1 5.1 5.4 5.5 5.4 5.4 5.3 5.3 5.0 4.5 4.6 4.9
121.2 6.1 6.1 6.1 6.1 6.2 6.2 6.2 6.3 6.3 6.3 6.3 6.2 6.3 6.1 6.1 6.1 6.3 6.1 6.2 6.2 6.1 6.1 6.1 6.1 6.1 6.1 6.0 5.9 6.0 6.1 6.2 6.0 6.2 6.2 6.2 6.1 6.0 6.1 5.8 5.7 5.8 5.8 5.7 5.7 5.7 5.5 5.0
80.8 6.2 6.2 6.3 6.2 6.3 6.3 6.2 6.3 6.3 6.3 6.2 6.3 6.2 6.4 6.3 6.4 6.3 6.2 6.3 6.2 6.2 6.3 6.2 6.4 6.1 6.4 6.4 6.3 6.2 6.3 6.3 6.3 6.4 6.3 6.2 6.2 6.2 6.2 6.1 5.9 6.0 5.9 5.4 5.1 5.2 5.6 5.8 5.5
40.4 5.9 6.0 6.1 6.1 6.1 6.2 6.1 6.2 6.2 6.1 6.1 6.0 6.0 6.1 6.1 6.2 6.2 6.2 6.2 6.2 6.2 6.2 6.2 6.2 6.3 6.2 6.2 6.3 6.3 6.2 6.2 6.2 6.2 6.1 6.2 6.2 6.2 6.3 6.2 6.2 6.1 6.0 5.9 5.9 6.0 5.5 5.3 5.3
0.0 5.9 5.7 5.8 5.9 6.1 6.1 6.2 6.1 6.1 6.1 6.1 6.1 6.1 6.0 6.0 6.2 6.1 6.2 6.1 6.1 6.1 6.1 6.0 6.1 6.1 6.2 6.1 6.2 6.2 6.2 6.2 6.1 6.2 6.2 6.2 6.2 6.3 6.2 6.2 6.2 6.1 6.0 5.9 5.9 6.1 5.9 5.3 5.2 5.4
12 O’clock
3 O’clock
6 O’clock
9 O’clock
Location One Location Two
Example 1
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Table shows 14 test point inspected off shore in service.
UT & PEC Comparisons
Line ID Test Point
Nom Min Reading Difference Indication Position
(mm) UT (mm) PEC (mm) (mm) UT PEC
2" Test Point 12 3.9 2.4 2.7 -0.3 6 o'clock 5-10 o'clock
2" Test Point 2 3.9 2 2.9 -0.9 not identified 4-10 o'clock
2" Test Point 3 3.9 2 2.7 -0.7 not identified 4-10 o'clock
3" Test Point 45 5.5 2.3 3.7 -1.4 6 o'clock 1-11 o'clock
4" Test Point 19 6.02 2 3.6 -1.6 8 o'clock 4-8 o'clock
4" Test Point 21 6.02 2.8 3.7 -0.9 4 o'clock 4-8 o'clock
8" Test Point 8 8.2 2.8 4.2 -1.4 3 o'clock 3-6 o'clock
8" Test Point 11 8.2 3.5 3.5 0 6 o'clock 5-8 o'clock
10" Test Point 6 6.35 3.7 3.3 0.4 3-6 o'clock full circ
10" Test Point 1 6.35 3.8 3.4 0.4 3-9 o'clock 2-10 o'clock
10" Test Point 2 6.35 3.6 3.5 0.1 3-9 o'clock 2-10 o'clock
10" Test Point 11 6.35 3 3.9 -0.9 1-5 o'clock, 8-11 o'clock full circ
12" Test Point 48 8.38 1 3.3 -2.3 6 o'clock 6 o'clock
12" Test Point 49 8.38 1 3.5 -2.5 6 o'clock 6 o'clock
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 2
• Nominal 7.92mm
• PEC (48% Remaining) 3,8mm
• Measured remaining before
wrap applied 3mm
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 3
• Pitting with leak path
through to wrap PEC
detected 68% remaining
(pit approx. 10 mm
diameter hole approx.
5mm)
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 4
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 4
• A-scan for Position E9
• Red line calibration White Line the A-scan
for the reading Notice they follow the
same path until the white A-scan falls off
4ms
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 5
• Remaining wall
measured through
blister then blister
removed.
• PEC measured 7.2
remaining
• UT measured 6.8
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
PEC, Radiography & Scanning
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
Section 0-24
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
Section 18-48
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
Section 36-68
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
Section 58-88
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 6
Section 74-100
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 7
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 7
Section 22-54
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 7 - PEC Results
Section 10-42
AB
CD
EF
GH
IJ
KL
MN
OP
Qmm
020
4060
80100
120140
160180
200220
240260
280300
3201
06.7
6.67.0
7.37.0
7.17.0
6.96.9
6.76.9
7.07.1
7.17.1
7.37.1
220
6.96.8
6.97.1
6.96.9
6.86.7
6.66.5
6.46.6
6.66.6
6.76.7
6.83
407.2
6.96.7
7.07.0
7.07.0
6.96.9
6.86.7
6.86.7
6.76.7
6.87.0
460
7.36.9
7.07.2
7.27.2
7.17.1
7.06.9
6.97.0
6.96.9
6.86.9
7.05
807.4
7.17.1
7.37.2
7.27.1
7.17.1
7.17.0
7.17.1
7.17.0
7.06.9
6100
7.67.3
7.27.2
7.17.1
7.17.1
7.17.1
7.17.2
7.27.2
7.17.1
7.17
1207.6
7.57.4
7.37.1
7.17.1
7.17.1
7.17.1
7.27.3
7.37.1
7.27.2
8140
7.67.7
7.67.4
7.27.2
7.27.0
7.07.0
7.17.3
7.37.3
7.27.3
7.39
1607.5
7.77.7
7.57.4
7.37.3
7.17.1
7.07.0
7.17.2
7.37.5
7.37.3
10180
7.47.6
7.67.6
7.57.5
7.57.2
7.27.0
6.97.1
7.17.2
7.27.3
7.311
2007.3
7.47.5
7.67.3
7.67.5
7.47.3
7.27.0
7.17.1
7.17.1
7.27.2
12220
7.37.4
7.47.5
7.37.6
7.57.5
7.57.4
7.27.2
7.27.1
7.17.1
7.113
2407.4
7.47.4
7.47.2
7.57.4
7.57.5
7.57.3
7.37.3
7.37.2
7.17.1
14260
7.47.4
7.47.3
7.27.2
7.27.4
7.37.4
7.57.5
7.57.4
7.37.2
7.115
2807.5
7.57.5
7.37.2
7.17.1
7.17.1
7.27.3
7.57.5
7.57.5
7.37.3
16300
7.47.5
7.57.4
7.37.1
7.17.0
7.07.0
7.17.3
7.47.5
7.47.5
7.417
3207.2
7.57.5
7.57.4
7.27.2
7.17.1
7.17.0
7.17.2
7.37.5
7.57.5
18340
7.27.4
7.57.4
7.47.4
7.37.2
7.27.1
7.17.1
7.17.2
7.37.3
7.319
3607.2
7.37.4
7.47.5
7.47.3
7.27.3
7.27.1
7.27.1
7.27.2
7.17.1
20380
7.37.3
7.37.4
7.47.4
7.37.3
7.27.3
7.27.1
7.17.2
7.17.0
7.121
4007.3
7.37.3
7.37.3
7.27.2
7.27.2
7.27.1
7.27.2
7.27.1
7.07.0
22420
7.47.3
7.37.1
7.06.9
6.97.0
7.07.1
7.07.0
7.07.0
7.17.0
7.023
4407.5
7.47.2
6.86.7
6.56.5
6.56.8
6.86.6
6.56.3
6.16.7
6.97.0
24460
7.37.3
7.06.6
6.36.1
5.95.8
5.96.1
6.06.2
6.36.1
6.26.7
7.025
4807.2
7.16.8
6.66.2
5.85.6
5.45.6
5.65.8
6.16.4
6.46.4
6.77.0
26500
7.17.0
6.86.5
6.15.6
5.14.9
4.95.1
5.76.1
6.36.5
6.66.8
7.027
5207.1
6.96.7
6.46.0
5.55.2
5.15.1
5.15.8
6.16.4
6.56.7
6.87.0
28540
7.16.9
6.86.4
6.15.7
5.55.3
5.25.4
6.06.2
6.46.5
6.66.7
6.829
5607.3
7.16.8
6.46.2
5.95.7
5.65.6
5.76.1
6.36.4
6.56.6
6.76.7
30580
7.27.0
6.86.6
6.46.1
5.95.9
5.85.8
6.16.4
6.46.6
6.76.7
6.731
6006.9
6.86.8
6.66.5
6.36.1
6.06.0
5.96.2
6.36.4
6.56.7
6.96.7
32620
6.66.8
6.86.7
6.66.4
6.26.0
6.06.0
6.26.3
6.56.7
6.96.8
6.833
6406.4
7.06.9
6.76.4
6.26.1
6.16.1
6.26.4
6.76.8
7.06.8
6.934
6606.3
7.06.8
6.76.4
6.36.3
6.36.1
6.06.4
6.46.5
6.86.7
7.035
6806.4
6.86.6
6.56.4
6.56.5
6.46.4
6.66.5
6.56.7
6.86.7
7.2
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
7.37.3
7.37.3
7.37.2
7.27.2
7.27.2
7.17.2
7.27.2
7.17.0
7.07.4
7.37.3
7.17.0
6.96.9
7.07.0
7.17.0
7.07.0
7.07.1
7.07.0
7.57.4
7.26.8
6.76.5
6.56.5
6.86.8
6.66.5
6.36.1
6.76.9
7.07.3
7.37.0
6.66.3
6.15.9
5.85.9
6.16.0
6.26.3
6.16.2
6.77.0
7.27.1
6.86.6
6.25.8
5.65.4
5.65.6
5.86.1
6.46.4
6.46.7
7.07.1
7.06.8
6.56.1
5.65.1
4.94.9
5.15.7
6.16.3
6.56.6
6.87.0
7.16.9
6.76.4
6.05.5
5.25.1
5.15.1
5.86.1
6.46.5
6.76.8
7.07.1
6.96.8
6.46.1
5.75.5
5.35.2
5.46.0
6.26.4
6.56.6
6.76.8
7.37.1
6.86.4
6.25.9
5.75.6
5.65.7
6.16.3
6.46.5
6.66.7
6.77.2
7.06.8
6.66.4
6.15.9
5.95.8
5.86.1
6.46.4
6.66.7
6.76.7
6.96.8
6.86.6
6.56.3
6.16.0
6.05.9
6.26.3
6.46.5
6.76.9
6.76.6
6.86.8
6.76.6
6.46.2
6.06.0
6.06.2
6.36.5
6.76.9
6.86.8
6.47.0
6.96.7
6.46.2
6.16.1
6.16.2
6.46.7
6.87.0
6.86.9
6.37.0
6.86.7
6.46.3
6.36.3
6.16.0
6.46.4
6.56.8
6.77.0
6.46.8
6.66.5
6.46.5
6.56.4
6.46.6
6.56.5
6.76.8
6.77.2
Example 7 - PEC Results
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 8
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 8
Section 4-36
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 8 - RAD & PEC of Elbow
Different
Schedule
Different
Schedule
Weld Area
Weld Area
Detected Defect
JOINT ICORR/IOM3 EVENT, ABERDEEN BRANCH, TUESDAY 28TH NOVEMBER, 2017
Example 9