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IndustryGlossary Term

Early-Works

Preliminary site preparation activities awarded before a project's main contract is finalised. For subcontractors, this means mobilising early—often under a letter of intent—to handle clearing, grading, or utility work. Scope and payment terms can be limited, so review your agreement carefully before committing resources.

Related Terms

Tieback

Industry

A structural anchor or connection point used to secure equipment, pipelines, or wellheads back to an existing infrastructure system, commonly referenced in subcontractor scopes of work when connecting new installations to live or existing lines. Subcontractors should confirm tieback specifications and isolation procedures clearly in their contracts, as this work often involves elevated risk and may require additional certifications or permits.

Major Projects Office (mpo)

Industry

A centralised owner or operator division that oversees large-scale capital projects and manages contractor relationships. Subcontractors typically submit bids, invoices, and compliance documents through the MPO rather than individual site teams. Knowing your MPO contact streamlines approvals, change orders, and payment processing.

Electrification

Industry

The shift from diesel-powered equipment to electric or hybrid alternatives on job sites. For subcontractors, this affects equipment specs, crew certifications, and bid requirements. Clients increasingly mandate electrification targets, changing what gear and skills you must supply.

Design-Bid-Build

Industry

A project delivery method where design is completed before subcontractors are invited to bid. Scope is fully defined upfront, reducing ambiguity in your quote. Common in construction; less flexible once awarded, so price your bid carefully.

Marine Infrastructure

Industry

Offshore and coastal structures such as platforms, jetties, pipelines, and subsea systems where field work is performed. Subcontractors must hold marine-specific certifications and follow offshore safety protocols. Mobilisation costs and logistics are typically higher than onshore projects.

Storage Injection

Industry

The process of pumping natural gas into underground storage facilities during periods of low demand. For subcontractors, it signals increased compression, pipeline, and maintenance work tied to seasonal injection cycles. Crews should expect elevated activity from spring through early fall.

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