Deep Water Cleaning System (DWCS)

The Deep Water Cleaning System (DWCS) is a patented subsea deployed manifold, tree and pipeline remediation cleaning system developed by Pipetech. It is a compact technology that sets a new global standard for subsea cleaning operations. 

The DWCS comprises topside and subsea equipment to remove subsea scale, wax, and other foulants. It utilizes a high-pressure water supply from topside, routed through a large bore high-pressure downline to the DWCS subsea unit. At the subsea unit, the high-pressure water is discharged through a specialized nozzle at the end of a feeder hose.

The DWCS is coupled to the entry point of the subsea piping infrastructure using a subsea guide frame or a bespoke base as a secure foundation. It can operate at a sea depth of 500m and can clean pipelines up to 30m in length. The cleaning speed is approximately 1 foot per 2 minutes, with a high-pressure water velocity of 430 m/s. It can operate in up to 4m wave heights.

The DWCS is designed according to DNV 2.7-3, TR1231, and DNV-RP-H103 standards. It accommodates a single-point lift with a 12 metric ton shackle, and can be deployed through a moon pool or by crane from the vessel's side. The DWCS enables Pipetech to complete cleaning operations in subsea manifolds, trees, and pipelines in a fraction of the time required by conventional methods.