OSBIT Power

 

Pipelines, Moorings and Risers (C11)

Venue: University of Newcastle upon Tyne

Staff: Dr Narakorn Srinil

Aims: To provide a detailed account of the fundamental requirements for the design, analysis and installation of offshore pipeline and risers. To provide an understanding of the hydrodynamics and design of mooring systems and umbilicals.

Module Content:

  • Pipeline and riser design overview.
  • Internal and external corrosion, monitoring and corrosion protection. Pipeline and riser materials & welding; pipes for transmission, linepipe in sour service, testing for corrosion resistance, girth welding of pipelines, pipe lay barge welding procedures, weld inspections and imperfections.
  • Structural design - internal and external pressure, longitudinal stress, bending, impact & indentation, upheaval buckling of pipelines.
  • Hydrodynamic design and analysis - wave excitation and fluid loading, hydrodynamic forces in steady and unsteady flow, vortex induced vibrations, design currents and waves, lateral resistance of pipelines, stability design.
  • Coating systems - anti-corrosion, concrete weight and thermal insulation coating systems.
  • Pipeline installation techniques - S-lay, J-lay, reel and controlled depth tow methods.
  • Assessment of pipeline spans - span analysis, natural frequency of spans, limit states relevant to spans, trawl gear loads.
  • Introduction to mooring systems and umbilicals.
  • Catenary analysis - chains and heavy cables, neutral buoyant cables, all system forces, application to moorings, risers and umbilicals

Learning outcomes: Students will have an understanding of all key factors associated pipeline and riser design and will be able to undertake the related calculations. They will be able to undertake some analyses related to the hydrodynamic and structural design of mooring systems.

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