February 15, 2010
7:30am	Registration & coffee
8:00am-5:00pm	Course
February 16, 2010
8:00am-4:45pm	Course

Pipeline Repair Methods/
In-Service Welding Course

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.

Continuing Education Units

Upon completion of the course, participants will be eligible to receive 1.4 Continuing Education Units (CEUs).

Lecturers

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.

Dr. Chris Alexander is a Principal at Stress Engineering Services, Inc. In terms of pipeline work, He has been integrally involved in assessing the effects of dents and mechanical damage on the structural integrity of pipelines. These efforts have involved full-scale burst and cyclic pressure fatigue testing, as well as modeling dents using finite element analysis. Dr. Alexander has also been involved in assessing the use of composites in repairing pipelines and offshore risers. He has published more than 50 technical papers and has made international presentations on a wide range of topics. He has received B.S. M.S., and Ph.D. degrees in Mechanical Engineering from Texas A&M University.

Course Program

DAY 1

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

DAY 2

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