Production Unit for Rigid Rolled Tubular Pipe

摘要

Intermediate deformation- and coiling equipment (11) is provided on a first float (10) distinct from the pipelaying ship. This equipment causes plastic deformation of the rigid pipe (28), coiling it onto the intermediate reel (11), following formation of the rigid tubular pipe (28). The float is connected by a bridge (18) to the assembly unit (16) The intermediate equipment includes an intermediate storage reel. Its drum diameter exceeds that of the reel on the pipelaying ship (42). The diameter of the drum of the intermediate storage reel (11) exceeds that of the last section of rigid pipe to be reeled on the storage reel of the pipelaying ship. The pipe assembly plant is installed on a second float (12) its length being 40-120 m. The bridge is articulated at each end, permitting vertical float motion. The articulation is detachable. The bridge is a latticework. Rotating mountings are detailed. Ballasting is controlled in accordance with the quantity of tubing reeled onto the float. The first float is a barge or stable hull construction. An Independent claim is included for the corresponding method of making the rolled rigid tubing to be laid from a ship.