• What You Need to Know About In-Service Welding – Practices and Procedures, Design Implementation, Inspection & Testing, Regulation & Compliance 2018
    February 20, 2019 - February 21, 2019
    8:00 am - 12:00 pm
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Performing welding operations onto operating pipelines for maintenance purposes or to attach branch connections is very dangerous. These operations require proper procedures, welder qualifications, and must address safety issues successfully. Published documentation and recommended practices and procedures regarding in-service welding, commonly referred to as hot-tapping or hot-tap welding, are continually being updated and pipeline engineers are constantly faced with problem solving in this arena.

Day 1: time 8:15 am to 4:30 pm.
Day 2: time 8:15 am – 12 pm

Students will receive:
Course notes in paper and flash drive format
Certificate of Completion providing 12 PDHs

This training will address in-service welding onto gas and liquid pipelines under both typical and non-typical conditions. It describes the concerns, design implementation, inspection and testing of in-service welds with particular emphasis on regulation/compliance review, recommended practices and case studies. In addition to the lecture portion, the course is designed to enable participants to successfully run Hot Tap® weld cooling rate prediction software and interpret the results.

The first portion of the course provides participants with an understanding of the factors that contribute to burn-through or cracking.

Participants will also learn the highlights of various technical resources that supplement the Hot Tap® program to provide a more comprehensive body of technical information pertaining to welding onto operating pipelines.

Who Should Attend?
– Engineers, technicians, and service professionals involved with construction, maintenance, inspection, and repair of liquids, gas, and products pipelines
– Project managers with oversight for third party engineering or maintenance
– Project and facility managers concerned with system integrity and maintenance



  • Factors influencing burnthrough
  • Determining burnthrough risk
  • Recent research

Hydrogen Cracking

  • Failures attributed to hydrogen cracking
  • Factors influencing hydrogen cracking
  • Hydrogen cracking mitigation

Lunch ~11:30

In-Service Welding Applications

  • Full-encirclement repair sleeves
  • Hot-tapped branch connections
  • Weld metal deposition

Developing In-Service Welding Procedures

  • Procedure options
  • Selecting appropriate procedures

What the Applicable Codes and Standards Say About In-Service Welding

  • API 1104 Appendix B
  • ASME codes
  • CSA Z662

Day 2
Things To Do Before You In-Service Weld

  • Pre-weld inspection
  • Heat input monitoring
  • Field Guidance
  • Other in-service welding concerns

Things To Do After You Perform An In-Service weld

  • Non-destructive testing methods
  • Confirmation coupons

Lessons To Be Learned and Simplified Approach to In-Service Weld

  • Reported incidents
  • Previously unreported incidents
  • Five general rules of thumb

The Role of Hot Tap® In Developing And Selecting Welding Procedures For Use On Pressurized Pipes

  • History of thermal analysis models
  • Interpolating between qualified procedures
  • Doing “what-if” scenarios and sensitivity analyses
  • Operating the Hot Tap® Model
  • Interpreting the Hot Tap® software results
  • Sources of error and conservatism

“Answers to questions very good and understandable for blue collar beer drinkers. Excellent!”
“Matt is clear and concise. He is a great presenter.”
“Handouts were very useful.  Provided valuable information.”
“The videos were great!”
“Very knowledgeable and engaging instructor.”
“Overall very informative class. Great presentation.”
“Very well delivered.”

The Instructor:
Matt is a consulting welding engineer to the Oil and Gas industry with his experience primarily focused on new pipeline construction and pipeline repair or in-service welding.  Matt works at DNV GL with previous experience with Kiefner and Associates and EWI.  Matt is a member of API 1104 and the co-chair of the API 1104 Annex B subcommittee on in-service welding.  He also a member of the ASME Section IX standards committee, ASME Post Construction standards committee that oversees ASME PCC-2 and is the chair of the Welded Repair subgroup of ASME PCC-2.

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Venue:   Las Vegas, NV