In response to the increasing demand for specialist mechanical engineering challenges, C-Job is paying more attention to the subject of hydraulics. A major part of this decision – in providing clients with an all-inclusive design that includes all the necessary mission equipment – has been to bring hydraulics expert Peter Lankreijer into C-Job team.


C-Job goes Hydraulics


Peter has extensive experience with designing hydraulic lifting platforms, drive systems and heave compensation systems in the maritime industry. After graduating from Delft University of Technology, he worked for 10 years for a renowned offshore and subsea service provider, working on the concept, basic and detailed design of a hydraulic lift system capable of lifting over 48,000 tonnes.


Flexible power

“There are endless possibilities for using hydraulics systems in the maritime sector,” he says enthusiastically. “For example, looking at the operational requirements of many of the vessels and projects that C-Job works on, large forces are often required to move components or equipment. In many of these cases, hydraulic systems are a very suitable option.” He is not only referring to the large scale projects in the offshore heavy lift, oil & gas, and renewables industries, but also smaller applications involving workboats, tugs, dredgers, yachts and ferries.


“This is because hydraulic systems are a very flexible source of power. This is important when looking at the diversity of applications. Power requirements in the dredging industry, for instance, are variable – sometimes demanding ‘high forces at low speed’ and at other times ‘low forces at high speed’. This can easily be combined into one hydraulics system.”


Efficient supply

Another example is motion compensation, which can be achieved without adding any power, in what is known as passive motion compensation to allow motions with low force variations. “Alternatively, active compensation for these motions can be done as well. Since not all waves have the maximum height, the peak power can come from the system’s storage of energy.” Such power storage involves an accumulator using pressurised nitrogen in a system that can be used as a ‘peak power shaver’. “This helps the operator work towards a more constant and efficient installed power with less peak requirements.”


Although the applications are numerous throughout the maritime industry, Peter points out that hydraulic systems do have one aspect in common: “When you are dealing with small spaces that have a high power requirement, hydraulic systems are extremely suitable. This is because while the force actuator is small, the ‘hydraulic power pack’, which supplies the pressurised oil is larger, and can easily be located at a more suitable location.”


Independent hydraulics support

With his previous experience of designing the largest hydraulic lift system in the offshore industry, Peter is without doubt a hydraulics expert. But how is C-Job going to incorporate these skills into its services? “The level of detail of hydraulic design at C-Job is the functional design, system dynamics and systems layout. This includes the size and type of the actuators, valves and piping. However, the selection of the actual brand and design of components comes down to the expertise of the hydraulic suppliers and so will not be part of the C-Job scope.”


Furthermore, as a client’s application may be more suited to a mechanical, electrical or combined solution, C-Job can also advise on these choices as well. “And since we are not a hydraulic equipment supplier, this advice will be fully independent. We can of course assist in the procurement process and communicate with the suppliers to make sure that the final set-up will meet the requirements of your system.”


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