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Subsea Engineering and training experts

Since 1988

Jee Star Logo Advanced design and stress analysis of subsea equipment

Advanced design and stress analysis of subsea equipment

About the course

This course provides an intensive overview for engineers working to the rules of API specifications 6A, 16A and 17D (ISO 10423, ISO 13533 and ISO 13628-4). These codes are the standard approach for the design of valve bodies, hubs, clamps, wellhead and tree equipment for both normal and high temperature (HT)/high pressure (HP) usage.

The tutor will explain the principles of stress analysis and review standard and non-standard materials used for these specifications. Topics include the concepts of membrane and bending stress, as well as primary, secondary and peak stresses. To add context to your knowledge base, the history and logic of the specifications is explained, in addition to techniques and formulas for analysis of stresses from pressure, external loads, and thermal gradients. Linear and non-linear finite element analysis and the interpretation of finite element results are also covered.


Learning outcomes

  • Apply API specifications 6A, 16A and 17D
  • Incorporate stress analysis principles into design
  • Select appropriate specialist techniques

View course contents
course bar chart Level Technical Awareness
timer icon Duration 3 Days
clock Study Hours 21
Also available in house

About the Tutor

Russell Thornton
MSc MInst. MDT

Russell has spent over 30 years’ in the oil and gas industry and has extensive expertise in hardware design and subsea controls. He has acted as a mentor for staff on a wide range of projects and has extensive knowledge of project, system and design roles.

Russell teaches the Subsea controls course.

Jee Star Logo Advanced design and stress analysis of subsea equipment - course contents

Day 1

Basic requirements of design

  • Appropriate material selection
  • API design rules
  • Analysis of wall thickness criteria
  • Membrane stress intensity
  • Bolting and screw threads
  • Bearing and direct shear stresses
  • Bending stress
  • Primary and secondary stresses
  • Bending stress calculations

Day 2

Procedure for stress categorisation

  • Thermal stress
  • Fatigue design
  • Stress considerations
  • Fatigue analysis

Day 3

Procedure for stress categorisation (continued)

  • High temperatures design
  • Finite-element analysis
  • Linearizing stress distributions from linear elastic models
  • Interpreting post-processor output
  • Non-linear finite-element analysis
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