Pan or lower compartment below the lowest shale-shaker screen.

Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards



Sump―a container constructed of steel, fiberglass, sealed concrete, or some other impermeable material utilized for temporary storage of E and P Waste, including, but not limited to, wash water and solids (sludge) generated by the removal/cleaning of residual amounts of E and P Waste from storage containers.

Source: Natural Resources, Office of Conservation – General Operations, Louisiana Administrative Code, Title 43, Part XIX, March 2013. Regulations



“Sump” means an impermeable vessel, or a collection device incorporated within a secondary containment system, with a capacity less than 500 gallons, which remains predominantly empty, serves as a drain or receptacle for de minimis releases on an intermittent basis and is not used to store, treat, dispose of or evaporate products or wastes.

Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. Regulations



A pit or excavation, for holding liquids.

Source: Petroleum Safety Orders–Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations


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