Pipeline Materials
2002 Program: Program and Project List

Material Technology

• Mill Test Techniques for Predicting Crack Arrest for High Toughness Steels
• Database of Mechanical and Toughness Properties of Pipe
• Evaluation of Modern Line Pipe Including Weld Zone Toughness
• Effect of Y/T Ratio on Mechanical Damage Tolerance

Stress Corrosion Cracking (SCC)

• SCC Acceptance Criteria
• Model for Assessing Remaining Strength of Line Pipe with Co-existence of Corrosion and SCC
• Cyclic Stress/Strain Behavior of Steels for SCC Susceptible Materials
• Integrity and Remaining Life of Line Pipe Containing SCC

Structural Integrity

• Improved Methods for Assessing the Remaining Life of Corroded Pipelines
• Evaluation of Joints Between Pipe and Materials of Unequal Wall Thickness
• Safe Use of Low Toughness Pipe
• Determine Arrest Toughness to Avoid Dynamic Ductile Fracture in Gas Transmission Pipelines
• Upgrade Fracture Control Technology for Natural Gas Transmission Pipelines
• Crack Arrestor Design
• Line Pipe Resistance to Outside Force Damage
• Line Rupture and Spacing of Parallel Pipelines
• Further Analysis of Pipeline Incident Data
• Influence of Higher Design Factor on Structural Integrity of X70 and X80 Pipe
• Time-dependent Ductile Flaw Growth

Mechanical Damage

• Real-time Monitoring for 3rd Party Contact
• Real-time Contact Monitoring of Pipelines
• Detecting 3rd Party Contact with a Pipeline in a Chaotic Flow Noise Environment
• Digital Signal Processing of 3rd Party Damage Signals
• Improving ILI for Mechanical Damage
• Assessment Criteria for Mechanical Damage in Gas Pipelines

Corrosion

• Detection of Anomalies at Crossings Using Ultrasonic Technology
• Detection & Sizing of Corrosion Using EMATs
• Magnetic Telescope for Inspection of Corrosion on Buried Pipe
• Effects of Stress on MFL Signals
• Critical Assessment of the Remaining Strength of Corroded Pipe Using MFL Signals
• Gas Coupled Ultrasonic Inspection

Stress Corrosion Cracking (SCC)

• SCC Sample Management
• SCC Crack Depth Measurement Tool
• Growth Prediction for SCC
• Sizing of SCC Colonies Using Phased Array Ultrasonics
• Non-linear Acoustic Detection and Characterization of Defects
• Environmental Factors Affect on SCC Growth
• Rotating Magnetic Field Probe
• Modeling of Ultrasonic Waves for Characterizing SCC & Pipeline Inclusions

Coating Disbondment

• Enhanced Implementation of MFL to Detect Coating Disbondment - Active CIS & Induced Plate Wave
• Commercialization of MEIS for Detecting Coating Disbonds

Welding

• Application of Phased Array UT for Weld Inspections

Material Properties

• Ultrasonic Measurement of Stress in Pipelines
• MIVC Stress Measurement

Pipeline Simulation Facility

Alternative Weld Acceptance Standards

• Interaction of Multiple Defects Under Plastic Collapse Conditions
• Development of Limit States & Reliability-based Procedure for Integrity Assessments of Long Segments and Entire Pipelines
• Reliability of Older Pipelines
• Development of Structural Integrity Assessment Procedures & Software for Girth Welded Pipes & Welded Sleeve Assemblies
• Strain Criteria for Assessment of Girth Weld Defects/Plastic Collapse Behavior of Girth Welds Containing Multiple Buried Near-surface Breaking and/or Vertically Stacked Defects
• Compendium of ECA Methodologies and Support to the Revisions of API 1104 , Appendix A
• Optimized Sampling Frequencies for Weld Reliability Assessments of Long Pipeline Segments

Improved Welding Processes and Procedures

• Wet Welding of Pipeline Steels
• Review of High Productivity Welding Process
• Deep Water Pipeline Welding - An Industry Primer
• Limitations of Cellulosic Welding Procedures for Heavy Wall Pipe & Fittings
• Develop Recommended Practice for Field Welding of Sour Service Piping Systems
• Feasibility of Nd:YAG Laser & Hybrid Laser/Arc Welding Processes for Pipeline Girth Welding Applications

Welding of Higher Strength/Higher Alloy Steels

• Evaluation of Weldable 13% Chromium Martensitic Stainless Steels for Flow Line Applications
• Effect on Base Metal Yield Strength Due to Repair Welding of TMCP Steels
• Effect of Weld Metal Yield Strength and Yield to Tensile Ratio on the Structural Integrity of Girth Welds in API 5L X80 Pipe
• Factors Affecting Productivity & Mechanical Properties of Weld Metals for X80 and Higher Strength Pipe
• Girth Welding X100 Line Pipe

Welding on In-service Pipelines

• Transient 3D Analysis
• Additional Features for Hot Tap Weld Cooling Rate Model
• Welding onto In-service Thin Wall Pipelines
• Alternative Process for In-service Welding