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.
Api 579
Related Terms
Ground Disturbance
ComplianceAny activity that breaks soil, such as excavating, grading, or driving stakes. Subcontractors must obtain utility locates and permits before starting work. Skipping this step risks fines and liability for damaged lines.
Compliance Theater
ComplianceWhen a prime contractor or owner requires paperwork and box-checking that looks rigorous but adds no real safety value. Subcontractors absorb the administrative burden without reducing on-site risk. Recognising it helps crews push back on inefficiencies that drain time and resources.
Dust Suppression
ComplianceThe process of controlling airborne particulates on worksites using water trucks, chemical agents, or barriers. Subcontractors may be contractually responsible for dust suppression on access roads, laydown yards, or excavation sites. Failure to comply can result in stop-work orders or back-charges from the prime contractor.
Agreed Order
ComplianceA court-approved settlement between parties that resolves a dispute without a full trial. For subcontractors, it often governs payment terms, lien releases, or compliance obligations. Both sides must follow its terms or face legal consequences.
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.
Corrective Action
ComplianceA documented response to a safety incident, audit finding, or client complaint that outlines steps taken to fix the root cause. Subcontractors are often required to submit corrective action reports to maintain contract standing. Failure to close them out on time can result in suspension from a client's approved vendor list.
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