OCS (Overhead Contact Systems) are electrified wire networks suspended above roadways or rail lines to power heavy equipment or vehicles. Subcontractors working near OCS must follow strict clearance protocols to avoid contact hazards. Awareness of OCS boundaries is essential for crane operators, rig movers, and elevated work crews.
Overhead Contact Systems
Related Terms
CBP (Customs and Border Protection)
ComplianceThe U.S. federal agency that regulates the entry of workers, equipment, and materials across the Canadian-American border, which subcontractors must navigate when mobilising crews or hauling specialised equipment into U.S. job sites. Non-compliance with CBP requirements can result in delays at the border, seized equipment, or crews being turned away, making proper documentation and advance planning critical for cross-border field work.
Walkaround Inspection
ComplianceA pre-shift visual check of equipment, vehicles, or a worksite to identify hazards, damage, or defects before work begins. Subcontractors are typically required to document findings using a checklist. Incomplete or skipped inspections can create liability exposure and violate site safety requirements.
Leading Indicators
ComplianceProactive metrics that signal future safety or performance issues before incidents occur. For subcontractors, these include near-miss reports, toolbox talk attendance, and equipment inspection rates. Tracking them helps crews stay ahead of problems rather than reacting after the fact.
Third-Party Representative
ComplianceAn independent inspector or agent hired by an operator or owner to verify that field work meets contract specifications. They are not your direct client but hold authority to approve, reject, or halt work on site. As a subcontractor, their sign-off is often required before progress billing is accepted.
Certified Payroll
ComplianceA government-required weekly payroll report proving workers were paid prevailing wages on publicly funded projects. Subcontractors must submit it to the prime contractor or project owner. Errors or late submissions can delay payment or trigger contract penalties.
Nfpa 70e (national Fire Protection Association 70e Standard for Electrical Safety in the Workplace)
ComplianceA U.S. standard governing electrical safety practices, PPE requirements, and arc flash hazard protocols on job sites. Subcontractors working on energised electrical systems must comply to meet site access and insurance requirements. Canadian contractors often encounter it on cross-border projects or with American general contractors.
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