PSC (Public Service Commission)

A targeted OSHA enforcement initiative focusing inspections on high-hazard industries or specific workplace dangers. Subcontractors in oil and gas or construction may face increased on-site audits under an active NEP. Being caught unprepared can result in citations, stop-work orders, and lost contracts.

An emissions control device fitted to diesel-powered equipment that traps soot and particulate matter from exhaust. Subcontractors must ensure DPFs are maintained and operational to meet Tier 4 emissions requirements on regulated job sites. Failing inspections or bypassing filters can result in equipment being pulled from service.

A U.S. federal regulation governing the licensing of nuclear power plants and facilities. Subcontractors working on nuclear sites must comply with its strict safety, quality assurance, and documentation requirements. Non-compliance can result in work stoppages or removal from site.

Official documentation submitted to regulatory bodies before starting work on a site. Subcontractors may be responsible for obtaining specific trade or activity permits. Delays in filings can halt work and affect project timelines and invoicing.

A written document identifying hazards and controls for a specific task before work begins. Subcontractors are typically required to complete and submit JHAs to the prime contractor or site owner. Failure to have a compliant JHA on site can result in work stoppages or disqualification from bidding.

A formal system for isolating and de-energising equipment before maintenance or repair work begins. For subcontractors, this typically means following a client's lockout/tagout (LOTO) programme on site. Non-compliance can result in work stoppages, contract termination, or serious injury.

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Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.