An occupational lung illness caused by inhaling crystalline silica dust during drilling, sandblasting, or concrete work. Subcontractors must implement exposure controls and monitoring to meet regulatory requirements. Failure to protect workers can result in serious liability and lost contracts.
Silica Disease
Related Terms
811 (one-Call System)
ComplianceA mandatory pre-dig notification service subcontractors must contact before any ground disturbance work. It triggers utility locates to mark buried lines, protecting crews from strikes. Failure to call can result in fines, liability, and project shutdowns.
Hold Point
ComplianceA mandatory stop in work where a client or inspector must review and sign off before the subcontractor can proceed. Missing a hold point can void certifications or trigger costly rework. Always confirm hold points during project kickoff to avoid schedule delays.
Exclusion Zone
ComplianceA clearly marked area on a worksite where only authorised personnel are permitted to enter. Subcontractors must identify and respect these boundaries before mobilising crews or equipment. Violations can result in stop-work orders, fines, or removal from site.
Heat Nep (heat National Emphasis Program)
ComplianceA targeted OSHA enforcement initiative directing inspectors to prioritise heat illness inspections at outdoor and indoor worksites. Subcontractors in oil & gas and construction face heightened scrutiny of heat safety plans, water access, and worker training. Non-compliance can trigger citations, fines, and work stoppages.
OFCCP (Office of Federal Contract Compliance Programs)
ComplianceA U.S. federal agency enforcing equal employment rules for companies working on federal contracts. Subcontractors on U.S. federal projects must meet hiring and anti-discrimination requirements. Non-compliance can result in contract termination or debarment from future federal work.
Well Barrier
ComplianceA physical or mechanical system that prevents uncontrolled flow of fluids from a wellbore. Subcontractors working on or near wells must verify barriers are in place before starting work. Barrier failures can trigger stop-work obligations and regulatory reporting requirements.
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