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Industry Glossary 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

Run Schedule

Industry

A timeline that outlines when specific tools, equipment, or crews are deployed downhole or on-site during an operation, dictating when a subcontractor's services are required and for how long. For field service companies, the run schedule directly determines mobilisation timing, crew rotations, and invoiceable hours on location.

Modular Construction

Industry

A build method where structures are assembled from prefabricated units manufactured offsite, then transported and installed on location. Subcontractors are often scoped for site prep, mechanical tie-ins, or installation crews rather than full builds. Work tends to come in concentrated, short-duration packages tied to delivery schedules.

Oilsands

Industry

Bitumen-rich deposits in northern Alberta requiring large-scale extraction and upgrading operations. For subcontractors, oilsands projects involve extended scopes, remote site conditions, and strict client safety programmes. Work is typically tied to major operators like Suncor, CNRL, or Imperial Oil.

Condition Monitoring

Industry

The ongoing tracking of equipment health using sensors, vibration analysis, or fluid sampling to detect faults early. Subcontractors may be hired specifically to perform these checks or provide monitored assets. It helps prevent costly breakdowns and supports predictive maintenance schedules on site.

Mmbtu (million British Thermal Units)

Industry

A standard unit for measuring natural gas energy content, commonly used in supply contracts and fuel billing. Subcontractors working on gas facilities or equipment commissioning will encounter MMBtu-based pricing. It directly affects how fuel costs and energy consumption are calculated on invoices.

Caustic Service

Industry

Work involving equipment or piping that handles highly alkaline chemicals, such as sodium hydroxide. Subcontractors must use compatible materials and certified personnel to avoid rapid corrosion and serious chemical burns. Specialised PPE and handling procedures are typically required by the client's safety plan.

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