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Saudi Aramco ProactiveSaudi Aramco Proactive Approach to Identify Stress Corrosion Cracking Using Latest EMAT InspectionLatest EMAT Inspection
Technology
© Copyright 2011, Saudi Aramco. All rights reserved.
Objectivej
Share Electromagnetic Acoustic Transducer (EMAT) in-line-inspection (ILI) major findings in Saudi Aramco’s pipelinesinspection (ILI) major findings in Saudi Aramco s pipelines network.
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Outline
• Pipelines Network Description
EMAT ILI T h l O i• EMAT ILI Technology Overview
• Pipelines Selection Criteria
• EMAT Major Findings
• Summary
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QAISUMAH SAFANIYAQAISUMAH
QASSIM QATIFRAS TANURA
JUBAIL
SAFANIYA
RIYADH
AL MADINAH
YANBU’
KHURAIS
SHEDGUM
DHAHRAN
ABQAIQ
HAWTAH
‘UTHMANIYAH
HARADH
SHAYBAH
HAWIYAH
Rabigh
In Operation
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Mothballed
Pipelines Network Description 22050p p18000 19300
12500
1000 1500 2500
5500
1940 1950 1970 1980 1990 2002 2009 2014
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Pipelines Network Description<20” 22-46” >46”
25% 40% 35%SizesSizes
C d G P d t & NGL
35% 36% 29%ServiceService
Crude Gas Product & NGL
<20 Years 20 30 Year >30 Year
44% 33% 23%AgeAge
20-30 Year >30 Year
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EMAT ILI Technology Overview• Technology Capability
Stress Corrosion Cracking
Coating disbondment
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EMAT ILI Technology Overviewgy
Sender Crack
Sensitive Pixel
Sender
ReceiverReceiver
Transmission Signal
Echo Signal
CoatingDisbondmentDetection
Crack Detection
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Pipelines Selection Criteria• Category A pipelines
— Pipelines History of Stress Corrosion Cracking
• Category B pipelines
— Similar Pipelines Environment (soil condition)
• Category C pipelines
- ASME B31 8S MANAGING SYSTEMASME B31.8S — MANAGING SYSTEM INTEGRITY OF GAS PIPELINES
ANSI/NACE Standard RP0204 — Stress Corrosion Cracking (SCC) Direct Assessment Methodology
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gy
EMAT ILI Outcome• EMAT Major Findings (64 Stress Corrosion Cracks)• EMAT Major Findings (64 Stress Corrosion Cracks)
NGL, 2
Crude,Gas, 37
Crude, 25
N f SCC F d ith tNo. of SCC Found with respect to pipelines Service
The following types of cracks detected and verified:g ypThrough wall cracksShallow cracksCracks associated and across girth welds
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Cracks associated and across girth weldsCracks associated with long seam welds
Examples of SCC foundp
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Examples of SCC foundp
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Examples of SCC foundp
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Examples of SCC foundp
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Examples of SCC foundp
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Examples of SCC foundp
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Summary• Maintain pipelines integrity
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