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Industry Glossary Term

In-Situ

Work performed on-site without removing equipment or materials from their installed position. Subcontractors are often mobilised specifically for in-situ repairs, inspections, or testing. Scope and billing should clearly reflect the fixed work location.

Related Terms

Membrane Separation

Industry

A filtration process that uses semi-permeable membranes to separate gases or liquids by molecular size or pressure. Common in natural gas processing and produced water treatment on field sites. Subcontractors may install, inspect, or maintain membrane units as part of facility service scopes.

Grid-Tie

Industry

A system that connects on-site power generation to the utility grid. Subcontractors working on grid-tie installations must coordinate with utility companies and meet strict interconnection standards. Common on solar and wind projects in remote industrial or construction settings.

Transmission Planning

Industry

The long-term process of designing and expanding power grid infrastructure to meet future energy demand. For subcontractors, it drives project pipelines for line construction, right-of-way clearing, and equipment installation. Winning transmission work often requires early engagement with utilities and grid operators.

Proactive Maintenance

Industry

Scheduled inspections and repairs performed before equipment fails, reducing costly downtime on job sites. Subcontractors who offer proactive maintenance services can secure longer-term service agreements with operators. It also helps avoid liability tied to unexpected breakdowns during active contracts.

2p Reserves

Industry

2P (Proved Plus Probable) Reserves represent the total oil or gas a client is reasonably confident exists and can extract. Operators use 2P figures to justify long-term capital spending and multi-year field development plans. Higher 2P reserves often signal sustained work programmes and stronger subcontractor demand.

Refractory Lining

Industry

Heat-resistant material installed inside furnaces, boilers, and process vessels to protect steel from extreme temperatures. Subcontractors are often hired for installation, inspection, and repair during turnarounds. Proper curing and dryout procedures are critical to avoid costly failures.

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