The process of running a device called a pig through a pipeline to clean, inspect, or displace fluids. Subcontractors are often hired to provide pig launcher and receiver equipment, operators, and associated support services. Pigging scopes can range from routine maintenance runs to complex inline inspection campaigns.
Pigging
Related Terms
Hydrostatic Testing
IndustryA pressure integrity test where pipelines, vessels, or equipment are filled with water and pressurised to detect leaks or weaknesses. Subcontractors are often hired to perform or witness these tests before commissioning. Proper documentation is critical, as clients and regulators require certified test records.
EPCM (Engineering, Procurement, Construction Management)
IndustryA project delivery model where one firm manages engineering, procurement, and construction on the owner's behalf. Subcontractors are hired directly by the owner, not the EPCM firm. Understanding this structure clarifies your contract chain, payment authority, and site reporting lines.
AFE (Authorization for Expenditure)
IndustryA budgeting document used in oil and gas projects that outlines expected costs and seeks approval before work begins. Subcontractors often work under AFEs issued by operators.
Grid Hardening
IndustryUpgrades to electrical infrastructure that improve resilience against outages, extreme weather, and physical damage. For subcontractors, it drives demand for line work, equipment installation, and civil construction crews. Contracts often involve tight timelines and utility compliance requirements.
IEA (International Energy Agency)
IndustryAn intergovernmental organisation that publishes global energy outlooks and demand forecasts, which subcontractors and field service companies use to anticipate shifts in upstream and downstream activity levels that may affect project pipelines and contract opportunities.
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.
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