A SALVOR’S APPROACH TO DECOMMISSIONING

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ARDENTSAFE AND TRUSTED PARTNER

Safety Record0 Loss Time Incidents (LTIs) since May 1st, 2015

Quality Management System is ISO 9001: 2015 certified

Certifications and Association Memberships

FPAL Supplier Number 10053937

Ownership structure

ARDENTOffshore Decommissioning

COSTA CONCORDIA WRECK REMOVALREFLOATING A BEHEMOTH• Italy 2012 – 2016• Depth 41m, gross tonnage 114,147 ton• Parbuckling, refloating and removal of the stranded

Costa Concordia Wreck in one piece• 530 people in 7 teams dedicated to different aspects• 130 Divers working 24/7, conduction over 18,000

dives• Current Contract value c. $1B

COSTA CONCORDIABY THE NUMBERS• 40,000 Man hours of

engineering• 530 People working on

site• 55 Certified welders• 130 Certified divers• 15,000 Individual dives logged

• 27,000 Hours of ROV footage

• 19,978 Tons of grout cement• 33,020 Tons of steel

fabricated• 1,000,000 Point FEM

CROSS SECTOR TRANSFERFROM SALVAGE TO DECOM• Extensive experience globally• Challenges Overcome:

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• Environmental sensitivity• Multiple stakeholder

management• Damaged or unknown condition• Challenging logistics chains• Safe disposal

• Dynamic planning and scheduling

F I N D I N G T H E S O L U T I O NTHE PROCESS

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SOLUTION: ONEBOUYANCY IN LEGS – VERTICAL REFLOAT

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SOLUTION TWO:TOPPLING AND LIFTING

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SOLUTION THREE:FLOTATION

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LIFTING WITH BUOYANCYMODULAR LIFTING CONCEPT

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• Modular system; Usable for most Jackets

• Closed A-Shape Design

• Divided in several compartment / tanks

• Clamped onto straight vertical side of the

Jacket

• Jacket Structure is able to bear the imposed

forces and moments

• Sufficient stability due to adequate waterplane

area at all steps of operation

• System is able to turn the Jacket horizontally

(overall 360˚ possible)

CAISSON DESIGNKEY FEATURES

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