A lifting system (10) for a subsea pipeline (18) comprises paired subsea foundations (20) that are spaced apart from each other to define a gap between them through which the pipeline extends. A removable lifting frame (12) is mounted on the foundations to bridge over the pipeline disposed in the gap. The lifting frame comprises a pair of feet (32) that are cooperable with respective support formations (34, 36) on the foundations. One support formation defines a hinge component to restrain one of the feet for pivotal movement. The other support formation defines a platform on which the other foot can rest in any of various positions within a support area. This compensates for differences in level, spacing or alignment between the foundations. The lifting frame (12) can be transferred to another location by dismounting it from a first pair of foundations and then mounting it onto a second pair of like foundations in a corresponding manner.
Lifting systems for subsea pipelines
2022-10-06
Patent
Elektronische Ressource
Englisch