The Frequensea Decommissioning Tool has reached another important milestone in its development. The integrated vibration motor assembly (vibration module) successfully completed factory acceptance testing at steel construction specialist J. van Belzen, where functional and watertightness tests confirmed its performance and integrity.
The vibration module has now been delivered to Deltares, where the next phase of the qualification programme is about to begin.
At Deltares, the vibration module will undergo a series of sweep tests under controlled laboratory conditions. During these tests, the assembly will be placed under water beneath a layer of sand in a dedicated test basin, replicating subsea buried conditions. By gradually varying the operating frequency of the vibration motors, the test team will determine the optimum frequency at which soil liquefaction occurs. These results will form the basis for the entire testing programme at Deltares this summer.
Once qualified, the Frequensea Decommissioning Tool will utilise its patented vibration-induced fluidization technology to provide the offshore industry with an efficient and environmentally responsible solution for the removal of redundant subsea cables and pipelines.
By minimising disturbance to the surrounding seabed, the technology supports the growing need for sustainable offshore decommissioning.
