Saudi Aramco ProactiveSaudi Aramco Proactive Approach to Identify Stress Corrosion Cracking Using Latest EMAT InspectionLatest EMAT Inspection

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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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