The process of digging near existing underground infrastructure such as gas lines, electrical conduits, or water mains. Subcontractors must locate and expose utilities safely before major earthworks begin. Requires ground disturbance permits and adherence to provincial Dig Safe or Click Before You Dig protocols.
Utility Excavation
Related Terms
Cave-In
ComplianceThe sudden collapse of excavation walls or trench sides onto workers below. Under provincial OHS regulations, subcontractors must implement protective systems before personnel enter any excavation deeper than 1.2 metres. Failure to comply can result in work stoppages, fines, and serious liability exposure.
Local Content
ComplianceA requirement that a set percentage of workers, materials, or services come from the local region or country. Subcontractors must often prove local hiring and sourcing to help clients meet these obligations. Non-compliance can disqualify your bid or void a contract.
Struck-By Hazard
ComplianceA 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.
Federal Lease
ComplianceA government-issued agreement granting a company the right to explore or extract resources on federally managed land. Subcontractors working on these sites must meet stricter regulatory and documentation requirements. Expect additional compliance checks, environmental controls, and reporting obligations on federally leased projects.
Federal Onshore Acreage
ComplianceLand managed by the federal government and leased for oil, gas, or resource extraction. Work on these lands requires additional permits, compliance steps, and federal oversight. Subcontractors must verify their employer holds valid federal authorisations before mobilising.
Api 510 (american Petroleum Institute Standard 510)
ComplianceAn inspection code governing the maintenance and repair of in-service pressure vessels. Subcontractors performing vessel work must often comply with API 510 requirements and use certified inspectors. Non-compliance can result in work stoppages or contract disqualification.
Latest Compliance News
McElhattan Foundation Offering $1 Million Prizes to Eliminate Workplace Electrocutions
The McElhattan Foundation has extended deadlines for its Zero Electrocution Challenge, offering two $1 million grants for innovations that eliminate on-the-job electrical hazards. Registration closes Sept. 1, 2026.
11 hours ago ComplianceOSHA Sets August Hearings on 20+ Proposed Rule Rollbacks, Including Chemical and Fall Protection Standards
OSHA has scheduled virtual public hearings beginning August 19 on more than 20 proposed deregulatory rules, covering chemical exposure standards, respiratory protection, and fixed ladder safety systems. Subcontractors have until July 6 to register to testify.
2 days ago ComplianceTrench Safety Stand Down Set for June 15-19, Registration Now Open
The National Utility Contractors Association is hosting the Trench Safety Stand Down June 15-19, open to all employers doing trench and excavation work. Utility and pipeline subcontractors can register crews online now.
2 days ago ComplianceCSB Warns Chemical Facilities to Prep for Hurricane Season Now
The U.S. Chemical Safety Board is urging chemical facilities to complete hurricane preparations before a single storm can trigger a catastrophic release. Gulf Coast maintenance and turnaround subcontractors should expect heightened client scrutiny this season.
3 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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