Industrial drainage equipment and maintenance

Industrial drainage assets and maintenance

Guidance on common industrial drainage assets, what they collect and the factors that affect inspection, cleaning and maintenance.

Technical guidanceSources and further reading

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28 reference records · 5 detailed guides

Identifying industrial drainage assets and maintenance needs

Oil separators, silt traps, catchpits and attenuation systems do different jobs. The maintenance approach depends on the asset installed, what drains to it and where the system discharges.

  • Asset details: manufacturer, model, capacity and drawings, where available.
  • Drainage duty: the area or process served and the oil, residues, sediment or other contamination it may receive.
  • Maintenance history: previous emptying or inspection, reported defects and recurring problems.
  • Access and discharge: cover locations, connected drains, outlet arrangement and known discharge destination.
Technical sources for this library

The references below support the drainage, product and pollution-control information used in these guides. Manufacturer literature is specific to the product or system named and is not a specification for an unidentified installation. Regulatory guidance should be read within the jurisdiction and scope stated by the source.

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Drainage chambers

Catchpits and sediment control

How catchpits collect settleable material, what standing water can mean and what to record when sediment is removed.

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Maintenance notes
Asset
Catchpit / sediment collection chamber
Function
Collect settleable material in the drainage system
Inspect
Sump, inlet, outlet and connected route
Waste source
The area draining into the chamber
  • Asset location and drawings
  • Catchment and recent works
  • Sediment or blockage observations
  • Vehicle access and cover details

Pollution prevention for businesses - GOV.UK

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Published by Industrial Drain Cleaning. Sources checked 12 September 2026. Editorial policy.

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Drainage maintenance

The maintenance needed depends on the asset, what drains to it, access and its condition.

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