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IndustryGlossary Term

PSI (Pounds Per Square Inch)

A unit measuring pressure in pipelines, hydraulic systems, and wellhead equipment. Subcontractors must verify PSI ratings when selecting tools, hoses, and fittings for safe operation. Exceeding rated PSI limits can trigger equipment failure, injuries, and liability.

Related Terms

Npr-A (national Petroleum Reserve in Alaska)

Industry

A federally managed exploration zone on Alaska's North Slope, open to oil and gas development. Subcontractors working here face strict federal permitting, remote logistics, and seasonal access limitations. Mobilisation costs and compliance requirements are significantly higher than standard onshore projects.

WCSB (Western Canadian Sedimentary Basin)

Industry

A vast sedimentary basin spanning BC, Alberta, Saskatchewan, and Manitoba that hosts Canada's largest oil and gas reserves. It is the primary operating region for most Canadian upstream field service subcontractors. Work here includes conventional drilling, oil sands operations, and pipeline construction.

Batch Reactor

Industry

A closed vessel used to process materials in discrete, timed cycles rather than continuously. Subcontractors may be called to inspect, clean, or maintain these units during scheduled shutdowns. Work is typically project-based, tied to turnaround or maintenance contracts.

Raise Boring

Industry

A drilling method that creates vertical or inclined shafts by reaming upward from a pilot hole. Subcontractors use it for ventilation shafts, ore passes, and utility corridors. It requires specialised rigs and certified crews, affecting your equipment and labour bids.

Work Package

Industry

A defined bundle of tasks, drawings, and specs issued to a subcontractor for a specific scope of work. It sets the boundaries of your crew's responsibilities on a project. Work packages drive your billing milestones and progress claims.

SAAR (Seasonally Adjusted Annualized Rate)

Industry

A statistical measure that projects a short-term activity figure into a full-year estimate, removing seasonal fluctuations. Clients and prime contractors use SAAR data to forecast project pipelines and award subcontracts. Tracking SAAR trends helps field service companies anticipate hiring surges or slowdowns before they hit.

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