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IndustryGlossary Term

Easement

A legal right allowing access to land owned by someone else for a specific purpose, such as running pipelines or power lines. Subcontractors must confirm easement boundaries before mobilising equipment or breaking ground. Working outside easement limits can trigger legal liability and project shutdowns.

Related Terms

Flowback

Industry

The initial release of fluids, sand, and gases from a wellbore after hydraulic fracturing, which requires specialised crews and equipment on-site to manage, separate, and dispose of the returned materials safely. For field service subcontractors, flowback operations represent a distinct scope of work with dedicated mobilisation requirements and often involve tight scheduling windows tied to the operator's completion timeline.

Default Order

Industry

A purchase or work order automatically issued to a subcontractor when a client's primary vendor cannot fulfil a job. It serves as a backup contract, so subcontractors should confirm scope and rates before accepting. Default orders may come with tighter mobilisation timelines.

Interconnection Delay

Industry

A postponement caused by unfinished grid or pipeline tie-in work that prevents a facility from going live. For subcontractors, it often means demobilisation holds, scope gaps, or standby costs with no clear end date. Document all waiting time carefully to support delay claims or change orders.

Intervention Vessel

Industry

A specialised ship used to perform maintenance, repair, or remediation work on subsea wells and pipelines. Subcontractors are often mobilised to these vessels for ROV operations, well work, or equipment installation. Scheduling and access are tightly controlled by the operator.

Lng (liquefied Natural Gas) Train

Industry

A single end-to-end processing unit that cools natural gas into liquid form for storage and export. Large LNG facilities run multiple trains, each requiring dedicated construction, maintenance, and shutdown crews. Subcontractors are typically mobilised per train, making scope and schedule highly compartmentalised.

On-Dock Rail

Industry

A rail line built directly inside a port terminal, allowing freight to transfer between ships and railcars without trucking. For subcontractors, this affects equipment and material delivery timelines on import-heavy projects. Factor it into your mobilisation planning when staging gear through coastal terminals.

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