Interceptor Suitability Assessment

interceptor functionality assessment via camera

If you are wondering “is my oil interceptor fit for purpose?” you are not alone. We often have enquiries from customers who would like to know if their oil interceptor works and if it is adequate for the risks they have on site. Our compliance and suitability assessments combine our separator design consultancy with our separator integrity servicing. The output of the assessment will provide an assessment as to the functionality and suitability of the interceptor.

Cases where our clients request an oil interceptor compliance assessment include:

  • Following concerns raised by ISO 14001 auditors.
  • You have moved onto a new site and want to check if the existing interceptors are working and adequate.
  • You are redeveloping a site and want to check if the existing interceptors are working and adequate.
  • Operations have changed on site since the interceptors were installed and you want to check if the existing interceptors are still fit for purpose.
  • Changes to site activities and risks in the catchment area.
  • Previously unknown interceptors have been discovered e.g. following a drain survey.

Oil Interceptor Functionality Assessment

To test functionality of the system we undertake an integrity service/general inspection of the separator in line with BS EN 858-2:2003. You will be provided with a general inspection report meaning another integrity service should not be needed for another 5 years.

We can also perform additional checks such as sampling the discharge of the interceptor to ensure contamination is reduced to within set parameters (5 ppm class I, 100 ppm class II).

The report will detail the functionality of the system and if defects are found give advice for any repairs which may be necessary.

Oil Interceptor Suitability Assessment

Your current interceptors will be assessed and compared against the required specification. If your interceptors meet or exceed the required specification you will be provided with a report validating the interceptors are fit for purpose.

If your interceptors fail to meet the requirements we can recommend further actions required. Unfortunately if inadequate interceptors have been installed it will often require replacing the old interceptor or installing additional interceptors. However remedial actions will not always require replacing the interceptor; alternative risk mitigation measures can be implemented based upon a site specific risk assessment such as making drain alterations, installing new equipment upstream of the interceptor e.g. silt traps, installing new equipment inside the interceptor e.g. interceptor high oil alarms or installing new equipment downstream of the interceptor e.g. containment valves or SUDS.

If further actions are required we can liaise with the Environmental Regulator's local Pollution Incident Reduction team to ensure they are satisfied that the proposed changes are adequate.

Interceptor Suitability Assesment Case Studies

interceptor suitability assessment and install case study
interceptor suitability service case study
inadequate oil interceptor case study
company unaware of interceptor

Extracts from interceptor suitability legislation and guidance

"The type and class of interceptor needed will depend on the activity and where the discharge is directed to."

Environment Agency Guidance - Pollution prevention for businesses

Need advice for services and products? Call us now 01656 741 799

Geo Pollution Technologies (UK) LTD - company number - 04689357


GPT head office is based in South Wales and covers all areas of South Wales, West Wales and Mid Wales including Cardiff, Swansea, Bridgend, Newport, Port Talbot, Powys, Llanelli, Neath, Pembrokeshire and Aberystwyth.

We also cover the South West of England from our premesis in Exeter including Cornwall, Devon, Taunton, Redruth, Truro, St Austell, Falmouth, New quay, Torquay, Paignton, Bristol, Plymouth, Bath, Gloucester and Somerset, .

We also operate across the midlands, London, Birmingham, Leicester, Northampton, Derby, Stoke, Nottingham, Coventry, Liverpool, Worcester, Southampton, Swindon, Manchester, Sheffield, Slough, Heathrow, Leatherhead and Surrey.