Advances in Latest Spill Response Technology

Advances in Latest Spill Response Technology for Offshore and High Risk Arctic and Ice Covered Waters

By Frands Jensen Vice President - DESMI Ro-Clean 1

The NEW Giant Octopus offshore brush skimmer with unique “Desmi -Y-Shaped” Orbit Design.

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Orbit top view Circular approach Wide area of attack/ contact “Y�-shaped configuration of orbits Accumulation towards centre Brushes extended beyond floats (No restrictions) Patent pending

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Exposed Orbit Module Brush banks driven by individual drive wheels Each Orbit has it’s own hydraulic drive motor

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Knuckle supplied with brushes Knuckle with brush carriers grabbing the oil and feeding the skimmer pumps Able to run on double curved orbit

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Cross section side view The circular approach along with the orbits accumulates the oil, increasing the oil layer towards the centre.

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Giant Octopus Single point lifting Orbit

Hydraulic drive

Hydraulic & discharge

Float

Thrusters DOP-250 pumps 8

Very first test model â˜ş

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One Complete Module 5 Orbit in oil

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Oil discharge from one Orbit Module

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Test Results on few cm of oil One Module - 5 Orbits approx 6500 cSt Free Water ≈2%

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M /h

Recovery rate

Rpm

rpm

120

240

100

200

80

160

60

120

40

80

20

40

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0 0

1

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6 7 8 Oil layer cm

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Ohmsett Test Facility, New Jersey, USA

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ASTM protocol for Nameplate Capacity in the Ohmsett test facility

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The skimmer can be used together with conventionel offshore boom

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Speed Sweep Triple-boom configuration as tested with NOFO, Norway System speed at up to 2.8-3.2 knots without exceeding 1.0 knot in apex .

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or in conjunction with new RO-Boom Speed Sweep On behalf of Exxon Production Research (EPR), AFTI and SL Ross did the first experimental work at Ohmsett back in 1998, and today the concept has today been fully improved and successful tested.

Patent pending 17

Speed logging record Sweeping speed approx. 3 times normal speed Readings from doppler logs

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Svalbard expedition

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Mechanical recovery in ice

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In-situ Burning

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PyroBoom Deepwater Horizon oil spill 21

Dispersant spray

OSR Hercules spray plane

Boat Spray

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Polar Bear Ice Skimmer Hexagonal shape 6 brush modules individual driven Large skimmer inlet Special scraper system Two hydraulic driven thrusters Single point lifting 23

Polar Bear Ice Skimmer Integrated center float, no external 360째 oil axes DOP Archimedes screw pump Heavy duty aluminium body Viscosityy range : lighter and heavy oils 24

Polar Bear Ice Skimmer

Ice Skimmer operation at Svalbard

ASTM test at Ohmsett

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Thank you very much for your attention !

Questions most welcome

Frands Jensen

www.desmi.ro-clean.com

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