Get Your Commercial Site Ready for Wet Weather with Interceptor Cleaning

An interceptor can be easy to forget when it sits beneath a busy yard and causes no obvious disruption. Interceptor cleaning deserves a place in the maintenance diary because collected oil and sediment have to be managed if the unit is to continue doing its job.

As autumn approaches, review the service history alongside the site’s drainage arrangements. A clear surface gully does not tell you whether the interceptor further along the system needs attention.

Identify the unit before booking the work

Find the asset reference, location, manufacturer information and previous service reports. Check which areas drain towards it and whether site activities have changed. A yard now used for vehicle maintenance may present different conditions from the same space used only for parking.

Share that information with the contractor. Oil separator maintenance should reflect the equipment fitted and the manufacturer’s instructions. A generic emptying request may miss inspection or servicing tasks that need to be included.

Review the records rather than guessing

Look for the date of the last clean, observations about accumulated material and unresolved defects. Where levels are monitored or alarms are fitted, check the records and report any warnings to the responsible maintenance team.

There is no sensible cleaning interval that suits every site. Usage, contamination levels, equipment requirements and any applicable site conditions all affect the maintenance plan. If the history is missing, explain that at the enquiry stage so the contractor can advise on establishing a baseline.

Agree the cleaning and inspection scope

Ask what the visit includes beyond removal of the contents. Depending on the unit, relevant work may include checking internal components, recording defects and servicing fitted equipment. The contractor should confirm the appropriate scope before attending.

The National Association of Drainage Contractors’ oil separator guidance highlights the importance of inspection and refilling with clean water after clearance. Reinstatement should follow the requirements for the particular system, with responsibility agreed in advance.

Mantank provides interceptor maintenance support, including scheduled emptying, cleaning and inspection for utility and infrastructure sites. Contact the team to discuss the equipment and access arrangements at your premises.

Make the visit workable on a busy yard

Reserve access to the covers and agree a suitable vehicle position. Let dispatch and security teams know which areas will be affected. If the interceptor receives flow from activities on site, discuss how those activities will be managed during the work.

Confirm how removed material will be assessed and taken away, then retain the service report and waste records. Any defects need a named owner and a follow-up date. Emptying a unit does not resolve damaged components or make an unsuitable drainage arrangement acceptable.

To arrange interceptor cleaning before wet weather, contact Mantank with the unit details and its latest maintenance record.