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IndustryGlossary Term

Secondary Stress

Indirect mechanical stress that develops in structures or piping due to thermal expansion, settlement, or equipment movement. Unlike primary stress, it isn't caused by direct applied loads. Subcontractors must account for it during installation and inspection to avoid material fatigue and warranty disputes.

Related Terms

Proved Development Locations

Industry

Sites already approved for drilling within a producing field, based on confirmed reserves data. For subcontractors, these locations represent near-term, lower-risk work opportunities. Expect faster mobilisation timelines and more defined scopes compared to exploratory sites.

Surface Alignment

Industry

The process of ensuring above-ground equipment, piping, or structural components are precisely positioned and levelled before commissioning. Subcontractors are often responsible for completing alignment checks as a hold point prior to handover. Poor alignment can trigger costly rework and delay final sign-off.

Oil-Directed Drilling

Industry

A drilling programme targeting oil reservoirs rather than natural gas. Subcontractors can expect higher rig activity and longer campaign durations in regions where oil prices justify development. Demand for completions, fluid hauling, and wellsite services typically rises during oil-directed cycles.

Pilot Bore

Industry

A small-diameter initial hole drilled along a planned path before reaming to full size, commonly used in horizontal directional drilling. Subcontractors use it to verify alignment and ground conditions before committing to the full excavation scope.

Medium Voltage Transformer

Industry

A device that steps electrical voltage up or down within the 1 kV to 35 kV range on industrial job sites. Subcontractors often work around these units when installing temporary power or connecting equipment. Strict lockout/tagout and electrical certification requirements apply near this equipment.

Open Season

Industry

A formal period when a pipeline or facility operator accepts capacity commitments from potential shippers or users. For subcontractors, it signals upcoming project activity and a chance to position for related field service work. Winning commitments during open season often triggers procurement and mobilisation timelines.

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