Electrical systems operating between 1 kV and 35 kV, commonly found on industrial sites and oil and gas facilities. Subcontractors working near MV equipment typically require specialised certifications and strict site safety compliance. Always confirm voltage classifications before mobilising electrical crews.
Medium-Voltage
Related Terms
Cal/osha (california Division of Occupational Safety and Health)
ComplianceCalifornia's state workplace safety regulator, enforcing standards that often exceed federal OSHA requirements. Subcontractors working on California job sites must comply with Cal/OSHA rules, not just federal ones. Non-compliance can result in fines, stop-work orders, and disqualification from future contracts.
ISEA (International Safety Equipment Association)
ComplianceA North American trade body that sets performance standards for personal protective equipment (PPE). Subcontractors should verify that hard hats, high-visibility vests, and eye protection meet ISEA standards. Many operator and general contractor safety plans require ISEA-compliant PPE on site.
Bonded Operator License
ComplianceA licence that requires the holder to carry a surety bond as financial assurance that they will meet regulatory obligations, meaning subcontractors and field service companies must maintain this bond coverage to legally operate certain equipment or perform specific scopes of work on a client's site. For subcontractors, holding a bonded operator licence is often a prerequisite for bidding on contracts, as it signals to operators and general contractors that financial accountability is in place if work standards or regulatory requirements are not met.
RBI (Risk-based Inspection)
ComplianceA method that prioritises equipment inspections based on failure risk and consequence severity. Subcontractors may be required to follow RBI schedules set by operators rather than fixed calendar intervals. Understanding RBI helps field crews anticipate inspection scopes and mobilisation timing.
Asme Bpv (boiler and Pressure Vessel) Code
ComplianceA set of standards governing the design, fabrication, and inspection of pressure vessels and boilers. Subcontractors working on pressure equipment must ensure their work meets applicable ASME BPV sections or risk failing inspection. Non-compliance can result in project shutdowns, liability exposure, and lost contracts.
Methane Mitigation
ComplianceEfforts to detect, reduce, and report methane emissions from oil and gas operations. Subcontractors may be required to use low-bleed equipment, perform leak detection, and document emissions. Clients increasingly include methane mitigation requirements in scopes of work and contracts.
Latest Compliance News
IRS Waives Penalties for Red-Dyed Diesel on Highways Through Dec. 31
The IRS will not penalize highway use of dyed diesel from Oct. 1 to Dec. 31, 2026. Contractors running off-road fuel in trucks should still check state rules and document fuel purchases.
20 hours agoComplianceSpecialty Trades Cut Injury Rates 32.4% Since 2011-12, CPWR Finds
CPWR's June 2026 data bulletin shows nonfatal injury rates fell 46.9% in heavy and civil, 32.4% in specialty trades and 32.2% in building construction. Safety leads should benchmark against the specialty-trades figure before their next renewal.
20 hours agoComplianceOSHA Targets November Proposal to Revisit Computer-Based LOTO Controls
OSHA lists a lockout/tagout update (RIN 1218-AD00) with a November 2026 target for a proposed rule on computer-based controls. The current 29 CFR 1910.147 requirements still apply.
yesterdayComplianceOSHA Proposes $648K Against Six Contractors at Monroe, NY Excavation
OSHA cited a general contractor and five subcontractors at the Monroe Commons site for willful and serious excavation violations. The proposed penalties total $648,094.
6 days agoRelated Guides
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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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