| 摘要 |
In undersea laying pipeline (P) which is being unreeled from a ship spool (S) in a plastically deformed state, the pipeline is straightened from the plastic state into a behaviorally elastic state as it is unreeled. The straightened pipeline is dispensed in the behaviorally elastic state through a downstream pipe tensioner (40 ) while the straightened pipeline upstream of the tensioner is maintained in the behaviorally elastic state. The pipeline laying assemblage may include a flange weld station immediately upstream of the tensioner and/or an anode weld station (80) downstream of the tensioner in the above -waterline freeboard of the ship (V). The pipeline laying method reduces the number of components and the size and cost of the ships in comparison to conventional systems. |
