ELG (Effluent Limitations Guidelines)

A 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.

A system for categorising ground conditions by type, stability, and load-bearing capacity. Subcontractors use it to determine excavation methods, shoring requirements, and equipment suitability. Misreading soil class can trigger safety violations or costly project delays.

API 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.

A designated worker assigned to monitor for fire or sparks during and after hot work operations like welding or grinding. Subcontractors are often required to supply certified firewatchers as a condition of their work permit. This role carries direct liability, so confirm scope and duration with the prime contractor before mobilising.

Any part that contains or holds pressurised fluid, such as a valve, fitting, or vessel wall. Subcontractors handling these parts must meet strict inspection and certification requirements. Improper installation or repair can trigger liability, stop-work orders, or regulatory penalties.

A water pipe made from lead that connects a municipal main to a building. Subcontractors must identify and report LSLs during excavation, pipe work, or utility upgrades. Strict handling and disposal regulations apply under federal and provincial environmental codes.

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.

OSHA 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.

How 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.