The date when equipment or a facility is officially commissioned and begins active operation. For subcontractors, this date often triggers billing milestones, warranty periods, or contract close-out requirements. Missing this date can result in penalties or delayed final payment.
In-Service Date
Related Terms
Satellite Jetty
IndustryA secondary or auxiliary dock located away from a main terminal, used to load or offload vessels at remote points along a waterway. Subcontractors may be mobilised specifically to satellite jetties for marine construction, maintenance, or material handling work. Access and logistics can differ significantly from main terminals, affecting crew scheduling and equipment mobilisation.
Deepwater
IndustryRefers to offshore oil and gas operations conducted in water depths exceeding 300 metres, where subcontractors and field service crews must hold specialised certifications, work within stricter regulatory frameworks, and often face extended mobilisation timelines and higher equipment day-rates.
Substation
IndustryA facility that converts high-voltage electrical power to usable levels for a job site or facility. Subcontractors in construction and oil & gas often work in, around, or on behalf of substations. Strict access controls and electrical safety certifications are typically required.
Construction Manager At Risk
IndustryA delivery model where a construction manager guarantees a maximum project cost and takes on financial risk if it's exceeded. Subcontractors are hired by the CM, not the owner, making the CM your direct client and contract holder. Your scope, payments, and change orders all flow through the CM.
Gathering System
IndustryA network of pipelines, compressors, and facilities that collect hydrocarbons from wellheads and move them to processing points. Subcontractors frequently support construction, inspection, and maintenance work across these systems. Scopes can span remote multi-well pads, requiring strong logistics and crew coordination.
Subsea Production System
IndustryA network of underwater equipment — including wellheads, manifolds, flowlines, and control systems — installed on the seabed to extract and transport oil or gas to a surface facility, representing a specialised scope of subsea installation, inspection, and maintenance work that subcontractors must hold specific certifications and equipment to perform. For field service companies, contracts in this space typically involve saturation diving support, remotely operated vehicle (ROV) operations, or subsea engineering services under strict offshore safety and quality regimes.
Latest Industry News
Williams Targets End-of-2027 In-Service Date for $1.2B Southeast Supply Enhancement Project
Williams is targeting an end-of-2027 in-service date for its $1.2 billion Transco Southeast Supply Enhancement project, adding 1.6 million dekatherms per day of gas transport capacity across Virginia, the Carolinas, Georgia, and Alabama.
21 days ago IndustryHydro One Files for Approval on $430M Ontario Transmission Line Targeting 2029 In-Service Date
Hydro One has applied to the Ontario Energy Board to build a 55-kilometre, 230-kilovolt transmission line between Clarington and Peterborough County, representing a $430 million construction opportunity for utility subcontractors.
16 days ago IndustrySpaceX Files Plans for 8-Mile "Starpipe" Natural Gas Pipeline at South Texas Launch Site
SpaceX plans to begin construction next month on an 8-mile natural gas pipeline called Starpipe to its Starbase facility in South Texas, targeting a January 2026 in-service date.
8 days ago IndustryCanada Greenlights 1M-Bpd Alberta-to-Pacific Pipeline for 2027 Start
Canada and Alberta unveiled plans for a new 1-million-barrel-per-day pipeline from the oil sands to British Columbia's coast, with construction targeted to start as early as September 2027.
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