SIF (Serious Injuries and Fatalities)

Engineering controls used to prevent trench or excavation collapse, including shoring, sloping, and trench boxes. Required by regulation on any excavation deeper than 1.2 metres. Subcontractors must have the correct system in place before workers enter.

Federal Canadian regulations governing how hazardous materials are transported by road, rail, or air. Subcontractors hauling fuels, chemicals, or compressed gases must carry proper documentation and placards. Non-compliance can result in fines, work stoppages, or loss of site access.

A site-specific document outlining how vehicle and pedestrian movement will be managed safely around a worksite. Subcontractors are often required to submit one before mobilising crews near roads or active facilities. It typically details signage, flagging requirements, and designated haul routes.

A provision in occupational health and safety legislation requiring employers to protect workers from recognised hazards, even when no specific regulation exists. For subcontractors, this means you can be cited for unsafe conditions on site regardless of client-controlled environments. It applies to your workers whether you own the worksite or not.

A U.S. EPA regulation requiring water utilities to replace lead service lines within 10 years. Subcontractors performing pipe replacement or water system work must meet strict material and testing standards. Non-compliance can disqualify firms from municipal infrastructure contracts.

A sudden cave-in of trench walls during excavation, posing serious injury or fatality risk to workers below grade. Subcontractors must ensure shoring, sloping, or trench box systems meet provincial OH&S requirements before crew entry. Liability for collapse incidents often falls on the excavating subcontractor, making documented safety compliance critical.

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