Interceptor Tanks and Separators

We carry out installations and maintenance work on interceptor tanks and separators for businesses such as:

  • Filling Station Forecourt Separators
  • Vehicle Wash Water Interceptor Tanks
  • Grease trap and oil interceptor tanks eg. restaurants, pubs, schools, care homes
  • Bypass Separators - for car parks, hard standing areas and roads

Getting It Right

There are quite a few rules and regulations issued by the Environment Agency to ensure that the correct sort of tanks are installed and that once in the ground they are serviced and maintained so as to run safely and efficiently. You can trust Lancs Tanks to make sure that your tanks are installed properly and are serviced correctly and in a timely manner.

Maintenance and use

To prevent pollution and minimise your costs, you need to manage your separator effectively. Every six months, or in accordance with manufacturer’s instructions, experienced personnel should:
  • Physically inspect the integrity of the separator and all mechanical parts
  • Assess the depth of accumulated oil and silt
  • Service all electrical equipment such as alarms and separator management systems
  • Check the condition of any coalescing device and replace it if necessary
  • Some heavily used or high-risk sites might require more frequent inspections.
Environment Agency
Pollution Prevention Guidelines PPG13

Regular Maintenance Is Vital

Effluent and run-off from vehicle washing and cleaning activities can damage the environment. If you cause pollution, you are breaking the law and spoiling your environment. Whether you’re cleaning just one vehicle or responsible for a large lorry fleet, you must arrange for collection and disposal of effluent to prevent pollution. It’s illegal to discharge trade effluent to the environment or into drains without permission. Environment Agency
Pollution Prevention Guidelines PPG13

Picture of a rural pubPicture of a car washPicture of a car parkPicture of a spade

Further Recommendations from the EA for Tank Owners

  • Keep a detailed log of when the separator is inspected, maintained, emptied and serviced.
  • Record specific events relating to the separator system such as cleaning, repairs, accidents and incidents.
  • Empty your separator as soon as a significant quantity of oil and/or silt has built up. The retained waste, including the silt, must be removed and the separator must be refilled with clean water before being put back in to service to prevent damage and to prevent oil passing through it.
  • In addition to normal emptying of the separator, it will also need to be emptied right away if oil or silt levels exceed 90 per cent of the storage volume of the separator and the alarm is activated (see Section 5b). When the oil or silt reaches this level or after a spillage, employ a registered waste removal company to empty the separator (see Section 8 for information about waste management).
  • For all waste removal operations you must make sure that the waste removal company has experience in emptying separators and that they do not allow any of the contents to escape from the outlet during emptying.
  • Every five years it is recommended that separators be emptied and given a general inspection to test the integrity and performance of the system. The separator must be refilled with clean water following such an inspection. Information on separator maintenance is in Part 2 of the European Standard.