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IndustryGlossary Term

RAP (Reclaimed Asphalt Pavement)

Milled or crushed material salvaged from existing asphalt surfaces during road removal or rehabilitation work. Subcontractors reuse RAP as base material or blend it into new asphalt mixes, reducing material costs. Proper handling and testing requirements may apply depending on project specs.

Related Terms

Stress-Corrosion Cracking

Industry

A failure mode where metal components crack under the combined effect of tensile stress and corrosive environments. Subcontractors must inspect susceptible equipment — like pipelines, pressure vessels, and lifting gear — for early signs. Missed SCC (Stress-Corrosion Cracking) damage can trigger costly shutdowns, liability claims, or failed inspections.

Support Activities for Oil and Gas Operations

Industry

An industry classification covering subcontractors who provide services to upstream oil and gas producers without extracting resources themselves. This includes well servicing, site prep, equipment rental, and pipeline support. Most field service companies in oil and gas fall under this category for tax and regulatory purposes.

Retrofit

Industry

Upgrading or modifying existing equipment to meet new specs, safety standards, or operational requirements. Subcontractors are often hired specifically for retrofit scopes on aging infrastructure. Work may require specialised certifications and careful coordination with the client's existing systems.

Corrective Maintenance

Industry

Repair work performed after equipment has already failed or broken down. For subcontractors, it often means urgent mobilisation and unplanned labour costs. Scope can expand quickly, so clear change-order procedures are essential.

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.

STACK (Sooner Trend Anadarko Basin Canadian and Kingfisher)

Industry

A prolific multi-zone oil and gas play in central Oklahoma covering Canadian and Kingfisher counties. Subcontractors active here support high-density horizontal drilling and completions work. Mobilisation demand can spike quickly, so maintaining local crew and equipment availability is critical.

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