An unplanned release of a hazardous substance — liquid, gas, or solid — from piping, vessels, or equipment. For subcontractors, an LOC incident can trigger immediate work stoppages, site investigations, and liability exposure. Proper reporting and response procedures are typically required under your prime contractor agreement.
Loss of Containment
Related Terms
Certified Payroll
ComplianceA government-required weekly payroll report proving workers were paid prevailing wages on publicly funded projects. Subcontractors must submit it to the prime contractor or project owner. Errors or late submissions can delay payment or trigger contract penalties.
Api 579
ComplianceAPI 579 (Fitness-For-Service) is an industry standard used to assess whether ageing or damaged equipment is safe to keep operating. Subcontractors may be required to support or comply with these assessments during inspection and maintenance scopes. Understanding it helps when working alongside integrity engineers on pressure vessels, piping, and tanks.
Director Liability
CompliancePersonal legal responsibility that company directors carry when their firm fails to meet obligations like unpaid wages or HST remittances. In field service companies, owners acting as directors can be held personally liable for corporate debts. Subcontractors operating as incorporated businesses should understand this risk before taking on large contracts.
Utility Locate Service
ComplianceA service that identifies and marks the location of underground utilities before excavation begins. Subcontractors are typically required to arrange locates before breaking ground. Failing to do so can result in project delays, fines, or liability for damages.
Intrastate Pipeline
ComplianceA pipeline that operates entirely within one province or state, regulated by provincial or state authorities rather than federal bodies. Subcontractors must hold the correct provincial certifications and follow local codes when working on these systems. Permitting, inspections, and compliance requirements differ significantly from interprovincial lines.
Permit (well Permit)
ComplianceA government-issued authorisation required before drilling or servicing a well can begin. Subcontractors should confirm a valid permit is in place before mobilising crews or equipment. Work started without one can result in shutdowns, fines, or liability for the operator and service company.
Latest Compliance News
WVU Study Links Plumber Injuries to PPE Avoidance, Rush Culture
A West Virginia University study of 23 licensed plumbers finds PPE reluctance, employer productivity pressure, and inadequate training are driving workplace injuries and long-term health problems.
11 hours agoComplianceTwo Traffic Plans, One Work Zone: Closing the Safety Gap Subcontractors Miss
Construction Executive breaks down why work zone fatalities persist even when signage and cones follow the rules, pointing to a disconnect between public traffic control plans and internal crew/equipment protocols.
3 days agoComplianceNYC Voids 2,000 Safety Cards After Training Provider Fraud Indictment
New York City is invalidating roughly 2,000 construction safety credentials tied to RedCode Inc. after prosecutors indicted the company and two of its principals for allegedly selling training cards without conducting the required courses.
5 days agoComplianceMSHA Alert Pushes Mine Operators to Step Up Impoundment Inspections
MSHA has issued a safety alert calling on mine operators to increase engineering assessments and inspections of impoundments, citing aging infrastructure and heavier precipitation events.
6 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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