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IndustryGlossary Term

Topside

The above-water structure of an offshore platform, including processing equipment, living quarters, and wellheads. Subcontractors working topside must meet strict offshore safety and certification requirements. Scope of work and billing rates often differ significantly from subsea or onshore assignments.

Related Terms

Call for Participation

Industry

A formal notice from an operator or prime contractor inviting subcontractors to express interest in an upcoming project or contract. It typically outlines scope, required certifications, and submission deadlines. Responding early can improve your chances of being shortlisted for the work.

TOFD (Time-of-flight Diffraction)

Industry

An ultrasonic weld inspection method used to detect and size internal flaws in pipelines and pressure vessels. Subcontractors performing NDT work must hold TOFD-specific certifications to qualify for this scope. It is widely accepted by regulators as an alternative to radiographic testing.

Hyperscale

Industry

Refers to massive, rapidly expanding infrastructure projects — such as data centre campuses or LNG facilities — that require large volumes of specialised subcontractors in a compressed timeframe. For field service crews, hyperscale projects offer high-volume work but demand fast mobilisation and flexible staffing.

Shaft Sinking

Industry

The process of excavating a vertical or near-vertical tunnel from surface down to an underground work area. Subcontractors are often engaged for specialised tasks like lining, hoisting, or ground support during this phase. It is common in mining, utility, and heavy civil construction projects.

Bonus Bid

Industry

A lump-sum payment made by an operator to secure rights to a lease block, separate from royalties. For subcontractors, a large bonus bid signals operator commitment and can indicate upcoming project activity in that area.

Frac Fleet

Industry

A complete set of hydraulic fracturing equipment deployed together at a well site, including pumps, blenders, and support units. For subcontractors, a frac fleet mobilisation often triggers large, time-sensitive labour and equipment contracts. Knowing fleet size helps you scope crew requirements and forecast workload duration.

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