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Plattform Jacket decomissioning equipment - Heavy Lift salvage bouys system

BTA

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Set of 4 Buoyancy Tanks Assemblies(BTA) with lifting capacity of 12.000 TON Gross - 9.000 TON NET.

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    Plattform Jacket decomissioning equipment - Heavy Lift salvage bouys system

    Plattform Jacket decomissioning equipment - Heavy Lift salvage bouys system

    Set of 4 Buoyancy Tanks Assemblies(BTA) with lifting capacity of 12.000 TON Gross - 9.000 TON NET.

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    Data sheet

    ManufacturerAker solutions - Norway
    ModelBTA DP2
    Performance specificationAbout 12.000 TON lifting capacity gross - 9.000 ton NET
    Year2008
    OtherOperational water depth about 59 meter
    ClassDocumented and DNV certified method for removal of jackets

    More info

    • Documented and DnV certified method for removal of jackets

    • Comprehensive systems & operations description

    Buoyancy Tanks Assemblies(BTA)

    • Total length of assembly 65 meter
    • Maximum with of assembly 13,7 meter
    • OD of each tank 6,6 meter
    • Length of each tank 53 meter
    • Maximum draft during installation 59 meter
    • Dry weight of assembly 1025 MT
    • Net lifting per assembly 2250 MT
    • The system consists of four identical assemblies

    BTA ballast system description

    One 4” combined seawater inlet/outlet line and one 4” combined vent/compressed air supply line to each ballast compartment.

    Each seawater inlet/outlet line is equipped with one remote operated valve and one ROV operated valve, the latter for contingency purpose.

    The vent lines are connected to a distribution manifold located inside the pyramid at the top of the BTA. This manifold is equipped with two remote operated vent valves and one remote operated valve to segregate the air flow between the lower ballast tanks and the upper ballast tanks.

    In addition there are two inlets for compressed air which are equipped with check valves.

    Each vent line is equipped with an in-line block valve outside the pyramid for use during Roll Over and Roll Back operations.

    Compressed air for ballasting is supplied from a compressors located on the OSV via two air hoses (part of the umbilical) connected to the distribution manifold on the BTA.

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