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IndustryGlossary Term

Combined-Cycle Gas Plant

A power generation facility that uses both gas turbines and steam turbines to maximise efficiency. For subcontractors, these sites involve complex, multi-discipline scopes across mechanical, electrical, and instrumentation trades. Outage and commissioning work is highly scheduled, requiring precise crew coordination and fast mobilisation.

Related Terms

Crown Land Sale

Industry

A government auction where energy companies bid on licences to explore or develop publicly owned land. Winning bids signal upcoming drilling and field activity in that area. Subcontractors watch these sales to anticipate new work and mobilise resources early.

Call-Out (call-Out Activity)

Industry

A single, unplanned service request dispatched to a subcontractor or field technician outside of scheduled work. Each call-out is typically logged as a discrete billable event. Subcontractors often charge a flat call-out fee plus time and materials.

Cathodic Protection

Industry

A corrosion control method that uses electrical current to protect buried or submerged metal infrastructure like pipelines and tanks. Subcontractors installing or maintaining CP (Cathodic Protection) systems must hold recognised certifications. Inspections and anode replacements are common billable scopes in pipeline integrity contracts.

Instrumentation

Industry

The installation, calibration, and maintenance of measurement and control devices such as gauges, transmitters, and sensors. Subcontractors are often scoped specifically for instrumentation work, requiring certified trades and precise documentation. It is a common standalone discipline on large oil and gas and industrial construction projects.

Takeaway Infrastructure

Industry

Pipelines, rail lines, and processing facilities that move product away from a well site or project area. Limited takeaway capacity can delay or shut down operations, directly affecting subcontractor schedules and utilisation. Always confirm takeaway status before committing crews and equipment to a project.

Processing Train

Industry

A series of vessels and equipment that separates wellhead fluids into oil, gas, and water. Subcontractors are often scoped to one train at a time, so know which train your work order covers. Shutdowns or upsets on your train can directly affect your crew's schedule and completion milestones.

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