FieldNews
Subscribe
Industry Glossary Term

Switchgear

Electrical equipment used to control, protect, and isolate power systems on job sites. Subcontractors working near switchgear must follow strict lockout/tagout procedures. Installation and maintenance work often requires certified electricians and site-specific safety permits.

Related Terms

Custody Transfer

Industry

The formal handover point where ownership or responsibility for a measured quantity of oil, gas, or other product moves from one party to another — typically triggering billing, invoicing, or contractual obligations for subcontractors involved in metering, transport, or handling operations. Field service crews working custody transfer points must ensure measurements are accurate and fully documented, as discrepancies can directly affect client invoices and liability.

Direct-Air Capture

Industry

DAC (Direct-Air Capture) is a technology that pulls CO₂ directly from the atmosphere using specialised equipment. Subcontractors may support DAC facility construction, maintenance, or mechanical services as energy clients expand carbon removal projects. It is an emerging work sector tied to federal clean-technology incentives in Canada.

CCS (Carbon Capture and Storage)

Industry

A process that captures CO₂ emissions from industrial sources and injects them underground for permanent storage. For subcontractors, CCS projects create demand for pipeline welding, compression equipment installation, and wellsite services. Familiarity with emissions-related scopes can open access to a growing segment of energy infrastructure work.

Cavern Storage

Industry

Underground storage facilities carved out of salt formations or rock, used to hold large volumes of natural gas, crude oil, or other hydrocarbons. Subcontractors handle construction, maintenance, inspection, and integrity testing at these sites, often needing confined-space and geotechnical certifications. Injection and withdrawal seasons create predictable maintenance windows, helping field service companies plan mobilisation.

Vam Connections

Industry

Premium threaded pipe connections used in oil and gas drilling and completion operations. Subcontractors handling, installing, or inspecting VAM connections must follow strict torque specs and handling procedures. Improper makeup can result in costly downhole failures and liability exposure.

VRU (Vapour Recovery Unit)

Industry

A compression system that captures hydrocarbon vapours from storage tanks or production equipment instead of venting them. Subcontractors are often hired to install, maintain, or service VRUs to meet emissions regulations. Familiarity with VRU work is increasingly required on oil and gas production sites.

Stay sharp on field operations

Industry news and insights, delivered to your inbox.

Subscribe to FieldNews
A community project by Aimsio