A notice issued by a client or prime contractor to identify qualified subcontractors before a formal tender is released. Responding helps get your company on the bidders list. It is not a contract offer, but skipping it can mean missing the actual bid.
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Cctv (closed-Circuit Television) Inspection
IndustryA method of inspecting pipelines, conduits, or underground infrastructure using a camera mounted on a remote-controlled crawler. Subcontractors are often mobilised to conduct these surveys and deliver video footage with written condition reports. Findings directly affect scope changes, defect repair contracts, and downstream work orders.
Refractory Lining
IndustryHeat-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.
Upstream Tie-in
IndustryA connection point where new pipeline or equipment is integrated into an existing live system closer to the wellhead or source. For subcontractors, this work typically requires strict hot-work permits and precise scheduling around production shutdowns. Delays at tie-in points directly impact your crew's standby time and invoice milestones.
Ip120 (initial Production 120-Day Rate)
IndustryThe average daily production output of a new well over its first 120 days. Operators use this benchmark to schedule and extend field service contracts. Strong IP120 results often trigger follow-on work for completions and production crews.
Substrate
IndustryThe base material or surface that a coating, lining, or treatment is applied to, such as steel pipe, concrete, or wood. Subcontractors must assess substrate condition before starting surface prep or application work. Poor substrate quality can affect adhesion, warranty, and job acceptance.
Aggregates
IndustryCrushed stone, gravel, and sand used as base materials in construction and oil and gas site preparation. Subcontractors sourcing or hauling aggregates must account for material costs, transport, and site access conditions. Pricing and availability vary significantly by region and project remoteness.
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