A contract that limits a subcontractor to one defined service or trade, such as civil work or instrumentation. It prevents scope creep by clearly separating responsibilities between contractors. This structure helps subcontractors price accurately and avoid liability for work outside their expertise.
Single-Scope Contract
Related Terms
Spring Break-Up
IndustryThe seasonal period when melting snow and frost causes ground conditions to soften, restricting heavy equipment access to remote sites. Municipalities impose road bans limiting load weights, delaying material hauls and crew mobilisation. Subcontractors should plan for project slowdowns and reduced billable hours during this window.
Pjm (pennsylvania-New Jersey-Maryland) Interconnection Queue
IndustryA waiting list managed by PJM for new power generation and transmission projects seeking grid connection approval. Subcontractors use it to track upcoming infrastructure builds and time their bids accordingly. Long queue backlogs signal sustained field work demand in the PJM service territory.
Phase Gate
IndustryA formal approval checkpoint where a project must meet defined criteria before work advances to the next stage. Subcontractors often cannot mobilise, invoice, or begin new scope until the client clears each gate. Delays at phase gates directly impact crew scheduling and cash flow.
Custody Transfer
IndustryThe formal handover point where ownership or responsibility for a measured quantity of oil, gas, or other product moves from one party to another — typically triggering billing, invoicing, or contractual obligations for subcontractors involved in metering, transport, or handling operations. Field service crews working custody transfer points must ensure measurements are accurate and fully documented, as discrepancies can directly affect client invoices and liability.
Cold Milling
IndustryA surface removal process where a rotating drum grinds down asphalt or concrete without heat. Subcontractors use it for road rehabilitation, pad preparation, and surface levelling on well sites or construction projects. Reclaimed material is often reused, reducing disposal costs.
FID (Final Investment Decision)
IndustryThe point when a project owner formally approves funding and commits to proceeding with a major project. For subcontractors, FID is the trigger that converts preliminary work into confirmed scopes and purchase orders. Mobilisation planning, crew hiring, and equipment sourcing typically begin after FID is announced.
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