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Decommissioning

Quantity surveying and claims support for agreed dismantling, removal and reinstatement packages on oil and gas assets.

Commercial challenges and how we approach them

Decommissioning-related construction can include dismantling structures, removing installations and reinstating work areas. The priced scope depends on asset information, access and the defined treatment of materials. Specialist operations and construction activities need distinct responsibilities.

Asset inventories that do not match the removal scope

The Challenge

The removal inventory may not match what the surveys find. Unrecorded contents, connections or structural alterations can change the preparation needed before a lift.

Our approach

We identify the inventory and survey assumptions used in the price. Authorised changes are reconciled with the actual assets and specialist findings, distinguishing additional scope from investigation already included.

Heavy-lift campaigns and uncertain readiness

The Challenge

Removal can depend on cleaning, separation and structural preparation being completed before a booked vessel arrives. A late workfront can create substantial standby or remobilisation costs.

Our approach

We compare the preparation and readiness obligations with the booked lifting campaign. The records need to show what remained incomplete, why that prevented the lift and what could be done to reduce standby. Vessel invoices are then reconciled with that chronology and any cancellation or remobilisation provisions, rather than accepted solely because the vessel was present.

Waste classification and disposal destinations

The Challenge

Recovered material may require different cleaning, treatment or disposal from that assumed at tender. Hazardous residues and unsuitable recycling routes can change transport and handling costs.

Our approach

We check specialist classifications, transfer records and destination charges against the disposal allowance. Any value assigned to recovered material follows the actual contract.

Making the retained facility safe and complete

The Challenge

Removing the asset does not necessarily complete the job. The retained site may still need capped services, structural protection, reinstatement and final surveys.

Our approach

We agree the required end state and make those obligations visible in the package scope. The final account is checked against completion evidence for both the removal and the work left behind.