Mechanical Integrity and Reliability of Coke Drums

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This course provides participants with the knowledge and skills needed to understand mechanical and structural failure modes in coke drums and manage their integrity in an efficient manner.

This course is tailored for refinery engineers and inspectors who are involved in the operation, reliability, and maintenance of delayed cokers. This training is also useful to managers who are involved in making decisions regarding vessel replacement. This class is intended for operating company personnel. Registration of others requires instructor approval.

You Will Learn


  • Design primer
  • Uniqueness of coke drums
  • Common failure modes
  • Relevant industry documents
  • Introduction to FEA

Skirt Failures

  • Skirt cracking and buckling
  • Assessment of cracked and distorted skirts
  • Skirt bolt failures
  • Skirt repairs and retrofitting
  • Unconventional skirts

Shell Failures

  • Tilting
  • Cracking
  • Bulging
  • Types of bulges
  • Bulging assessment
  • Bulge repairs
  • Unconventional shells

Action Plan

  • Drum life
  • Inspection and monitoring
  • Actions and strategies


Recommended for those with previous experience in design, process, operations or maintenance of delayed cokers.


Dr. Mahmod Samman, P.E.Dr. Mahmod Samman is the president of Houston Engineering Solutions. He has thirty years of industry experience mostly in damage assessment, repair, and life extension of coke drums. His state-of-the-art techniques in this field are utilized around the world. A licensed professional engineer in Texas, he has a Ph.D. in Engineering Mechanics from Duke University, numerous publications, and four issued and pending patents. He is a member of ASME and ASCE and a committee member of API 579/ASME FFS, API 934G and API 934J.

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