Developed over 10 years ago specifically at the request of the UK electricity industry, the PPL BundGuard system addresses the serious water removal problems at sub-station sites all over the country.

Any tank, drum or plant containing more than 200 litres of oil must be provided with some form of secondary containment or "bund", to retain leaks, spills or worse. By law the bund must be capable of holding at least 110% of the contents of the main oil tank.