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Lay Barge Pipeline Stresses 

Sub-sea oil and gas pipelines are often fabricated and laid from a vessel known as a lay barge. In order to minimise the bending stresses that occur during installation, the barge would apply a forward load to the pipeline, usually by the use of forward anchors. The welded sections of pipe are then fed aft through tensioners and over a curved structure called a 'stinger'. 
 
Best Solution developed a simple tool for use with finite element software to find the optimum forward load for a given pipe geometry and sea bed depth. The forward load which minimised pipeline stress, and consequent peak stress and it's location could be found efficiently. 
Lay barge 
Contours of Von-Mises stress in a section of pipe near the 'stinger' (250 m radius)