Leakage

Recent research shows a link between pressure changes and the frequency and size of leaks in distribution systems. Indeed one company believes that surge pressures cause over 50% of the leaks in distribution networks. Other studies show that higher leak frequencies occur when there is direct pumping and hence surges.

Some water companies and authorities around the world have implemented strategies to control leakages and understanding, measuring and controlling pressure surges features as one of the key strategies.

Other risk based techniques use surge pressures as one of the major inputs to determining the need to replace or upgrade pipes and systems. Our studies identify the highest risk areas and that finding then forms the basis of the future investment plans.

Some of our recent studies on pipe failures have shown that surges were a probable cause at the locations where such leaks and bursts have been reported. Other work shows that the re-start after a shutdown or after an incident can be the cause of additional leaks due to poor operating practices.

Our studies can identify the causes of leaks due to surge pressures. Then we specify equipment and operations that reduce the risk of future damage and hence additional leakage.

Leakage rates are reportedly between 10-32% and there is a strong correlation between leakage and contamination.

The current business & regulatory environment means that leakage reduction and reducing leakage rates are key performance indicators.