A closed vessel used to process materials in discrete, timed cycles rather than continuously. Subcontractors may be called to inspect, clean, or maintain these units during scheduled shutdowns. Work is typically project-based, tied to turnaround or maintenance contracts.
Batch Reactor
Related Terms
Full-Depth Reclamation
IndustryA road rehabilitation method where the full pavement structure is pulverised and mixed with the subgrade to create a stabilised base. Subcontractors use specialised reclaimers and stabilisers to complete the work in a single pass. It is common on oilfield lease roads and remote access routes requiring cost-effective repair.
Pre-Salt
IndustryRefers to oil reservoirs located beneath thick layers of underground salt, typically in deepwater offshore basins. For subcontractors, pre-salt projects involve specialised equipment, extended mobilisation timelines, and higher operational complexity. Expect longer contract cycles and stricter certification requirements from operators.
GC (General Contractor)
IndustryThe prime contractor hired by an owner to manage a project, responsible for awarding and overseeing subcontracts. As a sub, your contract, invoicing, and site access typically flow through the GC. They control your payment terms and schedule, making them your primary business relationship on site.
OSHA
IndustryOccupational Safety and Health Administration. The US federal agency responsible for workplace safety regulations. Compliance with OSHA standards is required for contractors working in the United States.
Berth
IndustryA designated docking space where vessels load or offload equipment, materials, and crew. Subcontractors must coordinate mobilisation schedules around berth availability to avoid costly delays. Port congestion can directly impact your invoicing milestones and crew rotations.
Guidance Engineer
IndustryA specialist who oversees directional drilling operations, ensuring wellbores are steered accurately to target zones. Subcontractors often supply these roles to operators on a contract basis. They work closely with MWD (Measurement While Drilling) technicians on site.
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