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IndustryGlossary Term

Legacy Site

An older facility or work location operating on outdated infrastructure, systems, or equipment. Subcontractors often face non-standard conditions, ageing assets, and extra compliance requirements on these sites. Mobilisation and scoping costs can be higher due to undocumented or deteriorated site conditions.

Related Terms

Displacement Rate (fuel)

Industry

The volume of fuel consumed per unit of work output by equipment or vehicles on a job site. Subcontractors use this figure to forecast fuel costs and validate reimbursement claims. Tracking it helps flag inefficient equipment before overruns hit your margins.

Full Displacement Pile

Industry

A foundation pile driven or screwed into soil without removing material, pushing ground laterally to create a tight fit. Common in oil and gas facility and construction site foundations. Subcontractors should confirm soil displacement specs early, as ground conditions directly affect equipment selection and crew scheduling.

2d/3d Seismic Survey

Industry

A geophysical mapping operation that uses sound waves to image underground formations before drilling begins. Subcontractors are hired to deploy geophones, vibroseis trucks, or marine streamers across large survey grids. Work is often remote and time-sensitive, with crews mobilising quickly once permits are secured.

PAUT (Phased Array Ultrasonic Testing)

Industry

An advanced non-destructive testing method that uses multiple ultrasonic beams to inspect welds, pipelines, and structural components for defects. It produces detailed cross-sectional images without cutting or damaging the material. Subcontractors offering PAUT services typically require certified Level II or III technicians and specialised portable equipment.

Ngl (natural Gas Liquid) Fractionator

Industry

A processing facility that separates mixed natural gas liquids into individual products like propane, butane, and ethane. Subcontractors often work these sites for maintenance, turnarounds, and equipment servicing. Fractionators operate continuously, so field crews should expect shift-based schedules and strict hot-work permitting.

Lease Sale

Industry

A government auction where energy companies bid for the right to explore and develop specific land or offshore blocks. Winning bids signal upcoming exploration activity, which often leads to new work opportunities for field service subcontractors. Tracking lease sales helps companies anticipate demand and position crews and equipment accordingly.

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