A safety assembly that automatically releases excess pressure from vessels, pipelines, or equipment to prevent catastrophic failure. Subcontractors must verify these systems are inspected, certified, and functional before commencing work. Tampering with or bypassing relief devices is a serious regulatory violation.
Pressure Relief System
Related Terms
Workers' Compensation Premium
ComplianceThe periodic fee subcontractors pay to provincial workers' compensation boards to fund injury coverage for their workers. Premium rates vary by industry classification and your company's claims history. High premiums directly impact your labour costs and project bid pricing.
Environmental Permitting
ComplianceThe process of obtaining government approvals before starting work that may impact land, water, or air. Subcontractors must confirm permits are in place before mobilising — delays can halt work without pay. Missing or expired permits can expose your company to fines and contract termination.
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.
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.
PSC (Public Service Commission)
ComplianceA provincial regulatory body that oversees public utilities and energy services in its jurisdiction. Subcontractors working on regulated utility projects must ensure their work meets PSC standards and approvals. Non-compliance can delay project sign-off and affect payment milestones.
Respiratory Protection Standard
ComplianceA regulatory requirement mandating fit-tested respirators and written programmes when workers face airborne hazards like H2S, silica, or fumes. Subcontractors must maintain records of fit tests, training, and equipment inspections for each worker. Non-compliance can result in stop-work orders or disqualification from site.
Latest Compliance News
CSB Report: Undersized Pressure Relief System Caused Fatal 2024 Reactor Explosion
The Chemical Safety Board's final report on a November 2024 explosion at a Louisville chemical facility found an undersized emergency pressure relief system contributed to two worker deaths. The findings carry direct implications for industrial maintenance subcontractors working around pressurized vessels.
20 hours ago ComplianceOSHA Orders Railroad to Pay Back Wages After Worker Suspended for Reporting Safety Incident
OSHA found Canadian Pacific Kansas City violated federal whistleblower protections after suspending a union chairman who reported a train collision to federal regulators. Field service employers take note.
4 days ago ComplianceTwo-Thirds of Organizations Struggle With PPE Compliance, 2026 Study Finds
A new study from ISEA and J. J. Keller finds that compliance, comfort, and safety culture remain the top challenges facing PPE programs, with more than two-thirds of organizations unable to get workers to consistently wear required equipment.
4 days ago ComplianceDOT Confirms Marijuana Ban Stands for Safety-Sensitive Workers Despite Federal Rescheduling
The Department of Transportation reaffirmed its zero-tolerance marijuana policy for safety-sensitive transportation workers following the DEA's reclassification of marijuana as a Schedule III substance. Medical marijuana cards and physician recommendations do not override DOT drug testing rules.
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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