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 Evaluation and Rehabilitation of Pipelines

Training courses: October 18-19
Conference: October 20-21
Exhibition: October 20-21

Pipeline Repair Methods / In-Service Welding


Course Objectives

The various aspects of pipeline repair using weld and non-weld methods will be covered, as will the concerns for welding onto in-service pipelines and the approaches used to address them.

Who Should Attend

Pipeline engineers, Operations and Maintenance personnel, inspectors, and welders.

Course Notes

All delegates will receive a detailed set of lecture notes containing more than 250 pages, providing an invaluable reference document after the course.



Bill Bruce is Director of Welding Technology with DNV Columbus (formerly CC Technologies). Prior to joining CCT, he was a technology leader at Edison Welding Institute and a senior engineer at Panhandle Eastern Pipeline Co. He is a member of the American Petroleum Institute API 1104 Committee and is the chairman of the Maintenance Welding Subcommittee.

Course Program


Pipeline Repair Methods/In-Service Welding
• Introduction
• Incentives
• Primary Concerns
Defect Assessment Prior to Repair
• Reason for Assessment
• Types of pipeline defects
• Pressure Reduction Requirements
• Corrosion Measurement Methods
• Corrosion Assessment Methods
Selecting an Appropriate Repair Method
• Pipeline Repair Manual
• Detailed Selection Criteria
Burnthrough and Related Safety Concerns
• Factors Affecting Burnthrough
• Effect of Wall Thickness
• Effect of Heat Input
• Effect of Flow Rate/Pressure
• Avoiding Burnthrough
Hydrogen Cracking Concerns
• Recent Significant Incidents
• Common Factor/Recommendation
• Hydrogen Cracking Requirements
• Welding Metallurgy 101
• Prevention of Hydrogen Cracking


Full Encirclement Repair Sleeves
• FullEncirclement Sleeve Types
• Principle of Operation
• Assuring Effective Reinforcement
• Sleeve Design
• Sleeve Fabrication
Hot Tap Branch Connections
• Branch Connection Design
• Reinforcement Types
• IntegrallyReinforced
Pipeline Repair by Weld Deposition
• Physical Concept
• History of Weld Deposition Repair
• Burnthrough Risk
• Integrity Restoration
• Practical Application
NonWelded Repairs
• Repair by Grinding
• Composite Repairs
• Epoxy Filled Shells
Code and Regulatory Requirements
• Recent Changes to API 1104
• Code Requirements for Weld Deposition Repair

Procedure Selection for Hot Tap and Repair Sleeve Welding

• Burnthrough Risk Summary
• Prevention of Hydrogen Cracking
• Welding Procedure Options
• Welder/Procedure Qualification
• Predicting Required Heat Input
• Selecting an appropriate procedure
Practical Aspects of Hot Tap and Repair Sleeve Welding
• Proper electrode handling
• Proper fitup
• Proper welding sequence
• Control of Heat Input Levels
• Inspection and Testing
Lessons to be Learned from Past Pipeline Repair Incidents
• Reported Incidents
• Previously Unreported Incidents
• Ten Commandments of In-Service Welding


Organized by:  
Clarion Technical Conferences Tiratsoo Technical
Supported by:
Journal of Pipeline Engineering
Pipelines International PRCI

The PIPE is the international membership organization for those who work in the design, construction, operation, and maintenance of oil and gas pipelines.

The Journal of Pipeline Engineering
Established in 2001, The Journal of Pipeline Engineering (incorporating the Journal of Pipeline Integrity) is an independent, international, quarterly journal, devoted to all aspects of engineering for oil, gas, and products pipelines.