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IndustryGlossary Term

Fired Heater

A combustion-based unit that uses burners to heat process fluids in oil and gas facilities. Subcontractors are often called in for inspection, refractory work, burner maintenance, and turnaround servicing. Hot work permits and confined space protocols typically apply.

Related Terms

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.

Preventive Maintenance

Industry

Scheduled servicing of equipment before failures occur, reducing costly downtime on job sites. Subcontractors are often contracted specifically to perform PM work on client assets. Documented PM records also support compliance audits and contract renewals.

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.

Chokepoint

Industry

A stage in a project where workflow bottlenecks, delaying downstream tasks and crew productivity. For subcontractors, chokepoints often occur at inspection holds, permit approvals, or material deliveries. Identifying them early helps protect schedule and avoid costly standby time.

Tolerance Zone

Industry

The acceptable range of variation allowed in measurements, materials, or workmanship on a job site. Subcontractors must stay within these limits or face rework orders and cost penalties. Specs are set by the prime contractor or engineering drawings.

Cryogenic Processing

Industry

A method of separating natural gas into valuable components by cooling it to extremely low temperatures. Subcontractors may be required to hold specialised certifications and use cryogenic-rated equipment on these sites. Strict handling protocols apply, as cryogenic materials pose serious safety risks to field crews.

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