Ice Pigging™ is a patented process for cleaning the inside of pipes using a pumpable ice slurry. It is fast, extremely effective, and requires no chemicals.

When commissioning district heating or cooling networks, all newly laid pipes have to be cleared of sediment and particulate contaminants before the system can be made operational. Cleaning these out with conventional methods such as water flushing can take several weeks and require significant amounts of power and chemicals.

Ice Pigging™ produces equivalent results to solid pigging, without any of the associated challenges; the ice can navigate complex pipework including diameter restrictions, bends, valve systems and other obstructions with no risk of becoming stuck. It can also be inserted and removed from the network using existing fill and drain vents.

Ice Pigging™ can be used as part of the commissioning process on new networks, or as a maintenance technique on existing pipework.

Ice Pigging™ is generally applied on larger bore pipes (between 40 and 500mm); therefore it is most commonly used on below ground pipework running between the energy centre and plant rooms.

For more information, contact or go to

Severnside Energy Recovery Centre
Severn Road
BS10 7SP