NDLI: Applying Corrosion Growth Rates Derived From Repeat ILI Runs to Predict Future Severity

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Volume 3: Operations, Monitoring and Maintenance; Materials and Joining

Volume 1: Pipelines and Facilities Integrity

Failure Along Spiral Welds in Gas Pipeline

Numerical Simulations of Burst of Corroded Pipes With Thermally Induced Compressive Axial Strain

Formulation and Experimental Validation of a New Erosion Flow Model

Applying Corrosion Growth Rates Derived From Repeat ILI Runs to Predict Future Severity

Effect of Crack Depth on Burst Strength of X70 Linepipe With Dent-Crack Defect

Relative Statistical Calibration of ILI Measurements

Assessment of In-Line Inspection Performance and Interpretation of Field Measurements for Characterization of Complex Dents

Findings From an Investigation of Hydrotest Protocols

Experimental Validation of a Finite-Element Model to Simulate an Impact on Pipeline due to Vehicles or Heavy Object Fall

The Development and Use of an Absolute Depth Size Specification in ILI-Based Crack Integrity Management of Pipelines

New Classification Approach for Dents With Metal Loss and Corrosion Along the Seam Weld

Thermal Response of Gas Pipeline Metal to Gas Decompression

Assessing the Benefits of Hydrotests for Pipelines With SCC History Post-Crack Detection ILI Runs

Probabilistic Assessment of Crack Detection ILI Effectiveness for Managing Stress Corrosion Cracking on Buried Pipelines

Susceptibility of Stress Corrosion Cracking in Liquid and Gas Pipelines: A Saudi Aramco Study Using Statistical Approaches

De Facto Hydrostatic Test Pressures: A Study in Double Stroking

Failure Pressure Ratios and Implied Reliability Levels for Corrosion Anomalies on Gas Transmission Pipelines

Pipeline Operator Perspective in Use of Hydrostatic Testing as an Integrity Management Tool

Material Properties and Flaw Characteristics of Vintage Girth Welds

Corrosion Growth and Remnant Life Assessment: How to Pick the Right Approach for Your Pipeline

Non-Linear Corrosion Growth: A More Appropriate and Accurate Model for Predicting Corrosion Growth Rate

Full-Scale Stress Corrosion Crack Growth Testing of an X70 Spiral-Welded Pipe in Near-Neutral pH Soil Environment

Probability-Based Sentencing Criteria for Volumetric In-Line Inspection Data

A Life-Cycle Approach to the Assessment of Pipeline Dents

The Effects of Pressure Fluctuations on Hydrogen Embrittlement in Pipeline Steels

Improvement of Pipeline Fatigue Life Estimation

Evaluation of Fatigue in Gas Pipelines

Development and Implementation of a Risk Based Prioritization Methodology for MAOP Reconfirmation of Gas Transmission Facilities

Development of Key Performance Indicator for Management of Under Deposit Corrosion (UDC)

Integrity of Buried Gas Pipeline Subjected to an Adjacent Pipe Rupture Event

Analysis of Pressure Test Failure Performance for Vintage Pipe

ILI-to-Field Data Comparisons: What Accuracy Can You Expect?

ILI to ILI Comparisons: Quantifying the Impact of Multiple Inspections

Study of a Plastic Strain Limit Damage Criterion for Pipeline Mechanical Damage Using FEA and Full-Scale Denting Tests

Girth Welds Integrity Evaluation on a Vintage Gas Pipeline

Making Integrity Decisions Using Metal Loss ILI Validation Process

A Study of Crack Interaction Criteria

Review of Engineering Fracture Mechanics Model for Pipeline Applications

Estimating J-R Curve From CVN Upper Shelf Energy and its Application

Integrity Assessment of Post-Peak-Moment Wrinkles

Finite Element Modeling and Quantification of Mechanical Damage Severity in Pipelines

A Review of Rules and Analysis Models for Interaction of LF-ERW Manufacturing Linear Features in Pipelines

Determining the Number of Excavations Required to Confirm the Presence or Absence of SCC on a Pipeline Following an SCCDA Process

Risk-Based Mitigation of Mechanical Damage

Reinforcement of Planar Defects in Low-Frequency ERW Long Seams Using Composite Reinforcing Materials

Full-Scale Elevated Temperature Testing of Composite Repairs in Bending and Compression

Finite Element Analysis of Composite Repairs With Full-Scale Validation Testing

Mitigation of Infilling Around Pipelines With Cyclic Lateral Deflections

Pipeline Failures Resulting From Interacting Integrity Threats

Restored Crossings: When and Where to Apply Stream Restoration Techniques to Protect Exposed Pipelines

Finite Element Analysis and Test Verification of Composite Repair Length on Corrosion Defects

Application of Load Sequence to Control Crack Growth in Steel Pipelines Under Near Neutral pH SCC

Identifying and Sizing Axial Seam Weld Flaws in ERW Pipe Seams and SCC in the Pipe Body Using Ultrasonic Imaging

Measuring Critical Strains in Dent Defect of Oil and Gas Pipes

Hydrotesting and In-Line Inspection: Now and in the Future

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Pipeline Strain and Vibration Monitoring by Smart Materials

Pipeline In-Line Inspection Enhancement Opportunities

Development of a Magnetic Eddy Current In-Line Inspection Tool

Continuous Depth Sizing of ILI Ultrasonic Crack Detection

Graded EMAT Performance Specification Validated in Blind Test

Shear-Wave Ultrasonic Crack Inspection Tool Performance for Cracks Associated With Metal Loss

Detection of Crack Initiation Based on Repeat In-Line Inspection

Improved Pipeline Integrity Management by Using Multiple ILI Technologies

Identification of Repair Coatings on Pipelines Using In-Line Inspection Technologies

Case Study on Management of a Pipeline Exhibiting Challenging Crack ILI Performance

A Finite Element Procedure to Model the Effect of Hydrostatic Testing on Subsequent Fatigue Crack Growth

Hydrostatic Pressure Testing as Part of an Integrity Management Program: A Case Study

A Study of Crack Detection Ultrasonic Attributes to Manage Leak Threats Associated With Short Crack-Like Flaws in ERW Pipelines

Casing and Inserted Pipe Inspection Program on the San Francisco Peninsula Using Robotic ILI

The Benefits of Accurate ILI Performance on Pipeline Integrity Programs for Axial Crack and Metal Loss Corrosion Threats

Update of Understanding of Near-Neutral pH SCC Crack Growth Mechanisms and Development of Pipe-Online Software for Pipeline Integrity Management

The Use of Hydrotesting and EMAT Inline Inspection Technology for the Integrity Management of Stress Corrosion Cracking (SCC) in Gas Pipelines

Evaluating Pipeline Ovality Acceptability Criteria for Straight Pipe Sections

Development of the UKOPA Strategy for the Management of Ageing Pipelines

Experimental and Numerical Investigation Into the Behavior of Buried Steel Pipelines Under Strike-Slip Fault Movement

Review of Phase II for the Comprehensive Study to Understand Longitudinal ERW Seam Failures

Development Towards a Novel Approach for Assessment of Corroded Pipe

Full-Bore Pipeline Rupture as ‘Transient Fanno’ Flow

Stress Corrosion Cracking (SCC) Integrity Management Plans for Onshore Liquid and Gas Pipelines: Saudi Aramco Comprehensive Study

What Do Pipelines and Airplanes Have in Common?

Evaluating Dents With Metal Loss Using Finite Element Analysis

Integrity Management of Ground Movement Hazards

Improved Pipeline Dent Integrity Management

Longitudinal Stress Limits in Managing Spans and Other Longitudinal Loads

Advanced Integrity Management Framework for Pipelines

Retarding Crack Growth by Static Pressure Hold for Pipeline Steel Exposed to a Near-Neutral pH Environment

AIV and FIV in Pipelines, Plants, and Facilities

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Applying Corrosion Growth Rates Derived From Repeat ILI Runs to Predict Future Severity

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Dawson, Jane Ganim, Lautaro
Copyright Year	2016
Abstract	Corrosion is still one of the major threats to the integrity of onshore and offshore pipelines. Realistic corrosion growth rates are essential inputs to safe and effective pipeline integrity management decisions. For example, corrosion rates are needed to predict pipeline reliability as a function of time, to identify the need for and timing of field investigations and/or repairs and to determine optimum re-inspection intervals to name just a few applications. The consequences associated with using wrong corrosion growth rates range from the inefficient use of resources (time, people and money) on unnecessary repairs and/or inspections to unexpected pipeline releases. The identification of where corrosion is active on a pipeline and how fast it is growing is a complex process which is understood in the general sense but is highly variable. Corrosion is therefore difficult to predict due to the very localised nature of its behaviour and the many parameters that influence the corrosion reaction. Running an in-line inspection (ILI) tool in a pipeline identifies the internal and/or external corrosion located along the full length of the pipeline. The ILI inspection also determines the depth, length and width measurements for each corrosion site and for the overall feature. The use of repeat ILI data to match and compare metal loss sites in order to estimate the corrosion growth rates at individual defects along a pipeline is a well-used and established practice in the industry. The use of such corrosion rates to make predictions of the future integrity of a pipeline started in earnest approximately 5 to 10 years ago and over that time considerable experience has been gained. Now that we are starting to collect 3, 4 or even 5 or more ILI data sets for the same pipelines we are able to test and validate our earlier ILI based growth rate predictions versus what actually occurred in the pipeline over time. With the benefit of this hindsight, the methodologies employed for evaluating and applying ILI based corrosion rates can be further improved and refined to give more accurate predictions of the future pipeline condition, the response schedule and for setting the timing of re-inspections. This paper shares the experience gained and the improvements that can be made to the determination of corrosion rates and application of these rates in a pipeline integrity assessment. These topics are illustrated and investigated via the use of case studies on real ILI data sets.
Sponsorship	Pipeline Division
File Format	PDF
ISBN	9780791850251
DOI	10.1115/IPC2016-64072
Volume Number	Volume 1: Pipelines and Facilities Integrity
Conference Proceedings	2016 11th International Pipeline Conference
Language	English
Publisher Date	2016-09-26
Publisher Place	Calgary, Alberta, Canada
Access Restriction	Subscribed
Subject Keyword	Corrosion Pipelines Metals Pipeline integrity management Inspection Maintenance Reliability Underwater pipelines Pipeline integrity
Content Type	Text
Resource Type	Article

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