IDLH (Immediately Dangerous To Life and Health)

The share of electrical capacity a subcontractor's site equipment or temporary facilities must supply during periods of maximum demand. Operators may contractually require field crews to manage or limit equipment startup times to avoid triggering peak load charges. Failing to comply can result in cost penalties passed down through the prime contractor.

Any task performed at an elevation where a fall could cause injury, typically above 3 metres. Subcontractors must hold valid Working at Heights certification and comply with provincial OH&S regulations. Clients often require proof of training before allowing workers on site.

A federal or provincial regulation passed by cabinet without a full legislative vote. For subcontractors, these can quickly change environmental rules, project approvals, or labour requirements on active job sites. Monitor them closely, as non-compliance can halt work or void contracts.

A struck-by hazard refers to any situation on a worksite where personnel risk injury from a moving object, such as swinging loads, dropped tools, vehicles, or pressurised line failures — a leading cause of fatality that subcontractors must identify and control in their site-specific hazard assessments and toolbox talks. For field service crews working around heavy equipment, cranes, or high-traffic laydown yards, recognising and mitigating struck-by risks is a core compliance obligation under provincial occupational health and safety legislation.

Inspection methods used to evaluate welds, pipelines, and structures without damaging them. Common NDT techniques include ultrasonic, radiographic, and magnetic particle testing. Subcontractors often need certified NDT technicians on crew to meet client and regulatory requirements.

A global industry body that sets drilling standards, safety training programmes, and well control certifications. Subcontractors working on drilling sites often need IADC-recognised credentials to qualify for contracts. Holding valid IADC certifications can directly affect your crew's eligibility and your bid competitiveness.

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