Pipework cleaning

Ice PiggingTM is an innovative pipeline cleaning solution that uses a thick ice slurry. An alternative to conventional pipeline-pigging and other pipeline cleaning techniques, Ice PiggingTM is highly effective, low-risk and suitable for all types of pipework.
Ice Pigging™

This solution harnesses the complex properties of semi-solid ice, which can be pumped like a liquid, but acts like a solid when a ‘pig’ of ice is formed within a pipe. Under pressure this removes sediment and built-up deposits to leave the pipe clear and obstruction-free. A relatively quick process, it also leaves pipe walls undamaged.

Among its many advantages, Ice Pigging™ is:
  • Up to 1,000 times more effective than water flushing.
  • Effective for all diameters, flowing through fittings and bends of pipes.
  • Exceptionally low risk – if ice were ever to get stuck it would simply melt.
  • Harmless to public health.
  • A highly flexible solution applicable to multiple industries.



of pipes have been cleaned with Ice Pigging™ globally

Services and equipment

SUEZ offers an Ice Pigging™ service from mobile delivery units as well as Ice Pigging™ machines that can be permanently installed in factory or industrial plant facilities. This low-risk, clean-in-place process can be applied to a wide range of pipe systems in diverse industrial and municipal applications.


Our Ice Pigging™ equipment enables a customer to clean their pipework at a touch of a button, always ready within their facility, be that in a factory, at the dockside or within their production plant. For the Ice Pigging™ cleaning service, tankers of ice slurry are transported to a customers’ site to undertake one-off or periodic cleaning.

A cleaner solution that is fast and versatile

Ice PiggingTM uses less water and requires less clean-up than traditional pipe-flushing or other pigging techniques.


When the ice pig is inserted into the pipe, its semi-liquid form adapts to the topography of the pipes and any changes in diameter, making it an ideal solution to common pigging problems – while avoiding the risk of damage to pipe walls.


The duration of a typical operation will depend on the length, diameter and material of the pipe to be cleaned. A clean that might have taken six months can be done in two weeks and something that typically takes six hours can be done in four minutes


Ice PiggingTM is a fast and powerful process for commissioning new, decommissioning old and maintaining existing pipe systems. It is ideal when you need to remove materials that impact process efficiency to improve flow performance and achieve quality requirements.

Ice Pigging: How does it work? - SUEZ

Credit: SUEZ UK

Ice pigging was used to clean a section of dairy rising main due to material build-up on the pipe wall and the effects of this to the performance of the main.

Wessex WaterUnited Kingdom

Ice pigging was chosen as a low-risk pipe cleaning solution to remove sediment in parts of the water network as part of [the SUEZ] water framework.

Dwr Cymru Welsh WaterWales

Ice Pigging™ has proved to be a ‘game changer’ for us and has now been adopted for other production sites.

Johnson MattheyUnited Kingdom

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