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Industry Glossary Term

Combined-Cycle

A power generation system that uses both gas and steam turbines to maximise efficiency. Subcontractors working these facilities must be prepared for complex, multi-system shutdowns and specialised maintenance scopes. Expect longer turnaround windows and stricter equipment handling requirements.

Related Terms

SMR (Small Modular Reactor)

Industry

A compact, factory-built nuclear power unit used to generate on-site electricity for remote industrial facilities and resource projects. For subcontractors, SMR sites represent emerging work in civil, electrical, and mechanical trades. Expect strict federal nuclear safety compliance requirements affecting worker certifications and site access.

PPA (Power Purchase Agreement)

Industry

A long-term contract where a buyer agrees to purchase electricity from a generator at a fixed price. For subcontractors, PPAs on large sites can affect whether temporary or permanent power infrastructure is in scope. Understanding site power arrangements helps clarify mobilisation costs and equipment requirements.

Transmission Planning

Industry

The long-term process of designing and expanding power grid infrastructure to meet future energy demand. For subcontractors, it drives project pipelines for line construction, right-of-way clearing, and equipment installation. Winning transmission work often requires early engagement with utilities and grid operators.

Coal Bed Methane

Industry

CBM (Coal Bed Methane) is natural gas extracted from coal seams rather than conventional reservoirs. Field crews typically handle dewatering operations, pipeline tie-ins, and wellsite maintenance on CBM projects. Work is often spread across large numbers of shallow, closely spaced wells requiring frequent travel between sites.

Substation

Industry

A facility that converts high-voltage electrical power to usable levels for a job site or facility. Subcontractors in construction and oil & gas often work in, around, or on behalf of substations. Strict access controls and electrical safety certifications are typically required.

Cryogenic Process Equipment

Industry

Vessels, piping, and heat exchangers designed to handle fluids at extremely low temperatures, typically below -150°C. Common in LNG (Liquefied Natural Gas) facilities and gas processing plants. Subcontractors must hold specialised certifications and use compatible tools and PPE when servicing this equipment.

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