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IndustryGlossary Term

Gas Processing

The treatment of raw natural gas to remove impurities and separate saleable products like propane and condensate. Processing plants are major work sites for subcontractors providing maintenance, instrumentation, and turnaround services. Scopes can be large and ongoing, making them reliable sources of repeat field work.

Related Terms

Fixed Equipment

Industry

Stationary assets such as pressure vessels, heat exchangers, and storage tanks that require scheduled inspection, maintenance, or repair. Subcontractors are often mobilised specifically to service fixed equipment during turnarounds or planned shutdowns. Scope is typically defined by inspection reports and regulatory requirements.

Sealed Bid

Industry

A confidential tender submission where subcontractors submit pricing without knowing competitors' rates. All bids are opened simultaneously by the hiring company. This process is common in public sector and large operator contracts across oil and gas and construction.

Recommissioning

Industry

The process of reactivating idle or mothballed equipment and facilities for resumed operations. Subcontractors are often mobilised to inspect, test, and restore systems to operational standards. Scope can be extensive, requiring multi-trade crews and detailed documentation.

FFS (Fitness-for-service)

Industry

A structured engineering assessment that determines whether ageing or damaged equipment is safe to keep operating. Subcontractors are often hired to collect inspection data, run integrity tests, or execute repairs recommended by FFS evaluations. Understanding FFS scope helps field crews prioritise work orders and meet client fitness thresholds before returning assets to service.

AFE (Authorization for Expenditure)

Industry

A budgeting document used in oil and gas projects that outlines expected costs and seeks approval before work begins. Subcontractors often work under AFEs issued by operators.

Upstream

Industry

The segment of the oil and gas industry involved in exploration and production (E&P). Includes drilling, completions, and well operations.

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