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Hydraulics aids in keeping offshore platforms stable

May 1, 2013 By Paul Heney

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Barge Master BV, a Dutch company, has installed Rexroth motion compensation to neutralize waves and enhance the usefulness and safety of offshore cranes. Barge Master launched the BM-001, its first operational motion compensation platform in December to provide stability and safety to offshore crane operations. The moving platform uses a drive and control system neutralize the roll, pitch and heave caused by waves and considerably expands the uses for standard floating cranes.

Crane stability has historically been a major challenge for offshore installation and decommissioning work because even small waves on the sea produce major movements for the tip of the crane, endangering the crew.

“Right now, standard floating cranes encounter difficulty with waves cresting at 30 cm. Safe crane operation can no longer be guaranteed,” said Barge Master Director Jan-Paul van den Bos.

Working together with Rexroth, Barge Master developed a comprehensive solution including all the necessary drive and control components to compensate for movements in three degrees of freedom.

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Barge_MasterSpecial sensors deliver motion data to the system, which calculates how the platform must move to compensate for the action of the waves. Three degrees of freedom (heave, roll and pitch) are compensated by three hydraulic cylinders that attach the crane to the hull of the ship. By measuring the motions of the vessel, and controlling the motion of the actuators, the cylinders’ movements can compensate for the waves.

The remaining degrees of freedom (surge, sway and yaw) are compensated by dynamic positioning of the vessel or traditional mooring systems.

The launch of the Barge Master platform will allow for cranes weighing approximately 400 tons to operate in swells up to five times greater than allowed by current systems. “

With Rexroth motion compensation we have expanded the application window for the floating cranes – handling waves of up to 150 cm,” van den Bos said.

The Barge Master system is suitable for all kinds of standard marine vessels, significantly expanding the utility of standard cranes, and drastically reducing the manufacturing costs and operating expenses for offshore projects.

Bosch Rexroth
www.boschrexroth.com

Filed Under: Cylinders, Featured, Mobile Hydraulics Blog, System Design

Reader Interactions

Comments

  1. Top Elevated Work Platforms says

    February 10, 2014 at 8:34 am

    Great post about hydraulic work platforms!! I think our work construction and mining work industry is incomplete without these hydraulic aids.

  2. Choose the Right Work Platform says

    February 11, 2014 at 9:44 am

    Great idea to enhance the usefulness and safety of offshore cranes. Thanks for enlightening about it.

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