A method used to protect workers from cave-ins during excavation work, including sloping, shoring, or trench boxes. Subcontractors are legally required to implement an adequate protective system before workers enter any trench deeper than 1.2 metres. Failure to comply can result in stop-work orders, fines, or loss of contract.
Protective System
Related Terms
Zero-Tolerance (drug and Alcohol Policy)
ComplianceA site policy that prohibits any detectable level of drugs or alcohol in workers. Subcontractors must ensure all personnel pass pre-access and random testing. Violations typically result in immediate removal from site and contract penalties.
Susan Harwood Training Grant
ComplianceA U.S. OSHA-funded grant that helps non-profit organisations develop safety training for high-hazard industries like oil and gas and construction. Subcontractors can access resulting training materials at no cost. Programmes often cover fall protection, confined spaces, and hazard recognition.
Structural Safety Margin
ComplianceThe buffer between a structure's maximum rated load capacity and the actual working load applied during operations. Subcontractors must verify these margins before rigging, lifting, or loading any platform, scaffold, or support structure. Exceeding the margin creates liability and triggers mandatory incident reporting.
Evacuation Readiness
ComplianceA subcontractor's documented ability to safely remove all personnel from a worksite during an emergency. It includes maintained muster lists, assigned roles, and verified escape routes. Primes often audit subcontractor evacuation plans before mobilisation.
Heat Stress
ComplianceA condition where the body cannot cool itself fast enough during hot or humid work conditions. It poses serious health and liability risks for subcontractors with outdoor or confined-space crews. Unmanaged heat stress can trigger site shutdowns and affect your compliance standing with the prime contractor.
Reactive Hazards
ComplianceMaterials or conditions that can cause fires, explosions, or toxic releases through chemical reactions when exposed to heat, water, or other substances. Subcontractors must identify these hazards before work begins and follow site-specific handling protocols. Common examples in oilfield and construction work include peroxides, unstable gases, and certain drilling chemicals.
Latest Compliance News
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United Mine Workers of America president Brian Sanson is demanding MSHA immediately enforce its stalled silica exposure rule, citing new black lung data from coal country. The fight has direct implications for any contractor cutting, drilling or blasting rock and concrete.
2 days agoComplianceOSHA Probes Electrician's Death at Mizzou Stadium Renovation Site
OSHA opened an investigation after a 44-year-old electrical foreman died during a June workplace incident at the University of Missouri's Memorial Stadium renovation project.
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Pipeline Technology Journal analysis shows the US aims to grow its CO2 pipeline network up to 20x by 2050, a buildout that could create sustained work for pipeline construction and integrity contractors.
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A lightning strike ignited three storage tanks at Explorer Pipeline's Glenpool depot near Tulsa, halting operations at a hub that moves gasoline, diesel, and jet fuel across Texas, Oklahoma, and the Midwest.
5 days agoRelated Guides
When a Jobsite Incident Happens: What Field Workers Need to Know Before Signing Anything
What to do after a jobsite injury or incident, what your rights are before signing incident reports, how workers' compensation works, and how to protect yourself on multi-employer worksites.
Compliance GuideOSHA Citations on Multi-Employer Worksites: What Subcontractors Need to Know
Learn how OSHA's multi-employer citation policy works, why subcontractors get cited for hazards they didn't create, and how to protect your company on operator-controlled job sites.
Compliance GuideHow to Read and Negotiate an Oilfield Master Service Agreement (MSA): A Subcontractor's Guide
Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.
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