This course provides a detailed understanding of subsea pipeline installation calculations and the engineering principles governing them. The course assembles the calculations you are likely to need with the know-how to use them correctly
Learning from worked examples and step by step tutoring will help delegates to confidently and accurately produce installation calculations for offshore pipelay projects, plus the ability to check and question construction contractors' output.
Catenaries
Catenary curves, Pipelay catenary equations, Pipe stresses, Control by tension, J-lay pipe stress exercise
Bending
Bending during S-lay, Break-over lengths, Concrete-coated pipe, Horizontal lay curve radii, Stinger pipe stress exercise
Reeling
Reeling criteria – back tension; low cycle fatigue; strength and ovality, Ovalisation exercise
Sagbend Buckling
Local buckling criteria, Prediction of buckling in catenary, Buckle propagation, Buckle arrestors and detectors, Plastic moment and axial force, Buckle prevention exercise
Ropes, winches and chains
Pulley usage, Wire rope construction, Fatigue life, Linear and drum winches, Chains and fittings, Winch capacity exercise
Pipe pull forces
Linear winch set-up – diablo roller forces, Alternative pull setups, Offshore pulls, Landfall pull load exercise
Steelwork
Design process, Visualisation, Analysis, Steelwork design codes, Combined load checks, Fatigue, Connections, Frame analysis exercise, Strut design code exercise
Pipelifting
Attachments, 2 / 3 and 4 point lifts, Strop sizing, Spreader beams, Deepwater resonance, Strop sizing exercise, Spool lift exercise
Lugs and seafastenings
Lug and padeye design, Foundations and fixing to deck, Sea fastenings, Lug stress exercise
Barge Stability
Stable floating bodies, Determining vessel stability, Free liquid surfaces and suspended loads, Modular craft and local barge adaptation, Crane load stability exercise
Anchors and piles
Anchor types and handling, Driven/suction and gravity piles, Sheet pile anchorage, Soils properties, Anchor capacity exercise, Sheet pile exercise
Abandonment and recovery
A&R overview, Case study for reel-lay barge, A&R analysis, Laydown exercise
