It is often challenging to carry out repair work on pipes containing liquids and one option is to completely drain the system.
However, this method can prove costly for companies.
Pipe Freezing Experts Huntingdon Fusion Techniques HFT has introduced the Qwik-Freezer Systems to their Pipestoppers Division.
These systems use CO2 to create ice plugs or freeze seals in the pipes, avoiding the requirement to completely drain down systems.
Luke Keane, technical sales manager for HFT, said: “Temporarily isolating the water in a system with CO2 Pipe Freezing Qwik-Freezer allows for repairs or modifications to be made without draining or shutting off the system, saving time, wastage and is quick and easy.”
A specially designed jacket is wrapped around the pipe at the point where the freeze is required.
A nozzle on the jacket is then coupled to a cylinder of liquid CO2 by means of a high-pressure hose. When the liquid CO2 is injected into the space between the Qwik-Freezer jacket and pipe, it immediately reduces the temperature inside the Qwik-Freezer jacket to -78C and this is transferred rapidly to freeze the pipe contents and thus seal the volume.
Qwik-Freezer, the industry standard portable CO2 Pipe Freezing System requires little set-up time and is the only low cost CO2 Pipe Freezing System capable of making ice plugs in pipes up to 200 mm diameter.
The Qwik-Freezer ice plug forms only in a section of pipe covered by the jacket so the resulting rise in pressure is very small and there is no damage to the pipe. The Qwik-Freezer pipe freezing kit can be used safely on metal or plastic pipes.
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