The 6th international forum on
Fixing Pipeline Problems

Technical Conference, Training Courses, and Exhibition

21 – 24 October, 2014 · Estrel Hotel, Berlin, Germany

Training courses: 21-22 October
Conference: 23-24 October
Exhibition: 23-24 October

Pipeline Repair, Hot Tapping, and 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.

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 GL in Columbus, Ohio. Prior to this he was a technology leader at the Edison Welding Institute and a senior engineer at Panhandle Eastern Pipeline Company. He is a member of the American Petroleum Institute API 1104 Committee and is the chairman of the Maintenance Welding Subcommittee.


Who Should Attend

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

Why attend this course?

  • The course will dispel a number of misconceptions that have developed pertaining to operating practices required to safely weld onto an in-service pipeline.
  • If the knowledge gained can be used to justify the application of in-service welding where it would have otherwise been prohibited (or prevent a single failure), the first application of the results can often offset the cost of attendance by orders of magnitude.
  • The application of industry best practices for pipeline repair, hot tapping, and in-service welding will ensure the safety of workers, reduce the probability of a failure, and can help to extend the life of pipeline systems. 

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

 Gold Sponsor


 Supported by

Journal of Pipeline Engineering
Pipelines International PPSA

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.