OUR GREAT MINDS

    by Tina Olivero

    CRP Subsea launches new Motion Stabiliser

    CRP Subsea is launching its new Motion Stabiliser technology, specifically designed to
    protect cables, umbilicals and flowlines from motion instability and damage from
    uncontrolled movement. Engineered to mitigate instability in both axial and lateral
    directions, the unique Motion Stabiliser design includes customisable fins that anchor into
    the seabed increasing overall resistance.

    The Motion Stabiliser incorporates CRP Subsea’s established Uraduct® and Tri-strakes®
    materials and designs. It is supplied in two lightweight halves, which are banded together
    during pipe lay deployment operations, removing the need for a secondary installation
    vessel. Fins placed along the length of the stabiliser, are custom-designed for varied soil
    conditions, ensuring they effectively embed into the seabed and create the required
    resistance per metre of the system. In tests this proved to give significantly increased
    resistance compared to cables, umbilicals and flowlines without stabilizers.
    Louvain-Walters, continues: “The Motion Stabilizer complements our existing range of
    subsea ancillary protection technology. It is manufactured from CRP Subsea’s highly
    abrasion resistant API 17L certified and REACH compliant Uraduct® material, which has an
    enviable track record of over 30 years. The Motion Stabilisers are highly resilient and will
    survive considerable seabed abrasion and over boarding chutes or S-Lay operations.”

    Motion Stabilisers

    Subsea cables, umbilicals and flowlines laid on the seabed without trenching commonly suffer from motion instability. This can be externally induced by current flow, internally induced by thermal variations or slugging, can be due to bathymetric features (seabed geometry) or the laid characteristics of the flowline. This motion instability can sometimes be referred to as on-bottom stability, axial walking or lateral sliding. Irrespective of the phenomenon causing the motion instability, the system should be controlled in its movement, remaining in its laid location where desired or allowed to move where needed throughout life, mitigating the risk of damage or undue stresses to cables, umbilicals or flowlines.

    The Motion Stabiliser technology has been engineered to protect subsea cables, umbilicals and flowlines by mitigating instability in both axial and lateral directions. The unique Motion Stabiliser design includes self-burying helical fins of varied pitch along the length of the stabiliser, that anchor into the seabed increasing overall resistance by over three times. The fins are custom designed for the varied soil conditions, to ensure they effectively embed into the seabed and create the required resistance per meter of the system.

    Motion Stabilisers use established Uraduct® and Tri-strakes® materials and designs, supplied in two lightweight halves, which are quickly and easily banded together in minimal time during pipe lay deployment operations, without the need for a secondary vessel. The Motion Stabiliser is resilient and will survive considerable seabed abrasion and overboarding chutes or S-Lay operations.

    Motion Stabilisers are manufactured from CRP Subsea’s highly abrasion resistant API 17L certified Uraduct® material, with an enviable track record of over 30 years, used in a variety of locations and environments.

    Motion Stabiliser powered by Mimir Digital Intelligence

    The Motion Stabiliser can be customised to be powered by Mimir Digital Intelligence, providing you with continuous monitoring and recording of cable, umbilical and flowline motion data. This includes a built-in Digital Intelligence electronic module, encompassing a state-of-the-art multi-sensor array, providing an effective solution for continual monitoring without the need for additional stand-alone monitoring devices.

    CRP Subsea (formerly Trelleborg Offshore UK)

    Using advanced material technology, CRP Subsea provides high integrity solutions for
    the harshest and most demanding offshore environments. CRP Subsea specialises in the
    development and production of polymer and syntactic foam-based buoyancy and
    protection products for the offshore renewables and oil & gas industries. CRP Subsea
    has been providing innovative solutions to the industry for over 40
    years.

    Source and Photo: CRP Subsea

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