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We are Yunik
Pipe Freezing
Pipe freezing is a cost effective commercial technique for solidifying the liquid in a pipe, with the utilization of cryogen to form a pressure resistant plugs so that maintenance or repair work can be carried out on the pipe without the need to drain down the whole system. This technique has been used for over 30 years in nuclear submarines, on cross-country pipeline, process plant and in many other applications on pipelines containing water, sewage and a wide range of oils and other fluids.
The this technique of line plugging has been applied successfully in SA in applications such as static fire protection systems, Intricate potable water and service water pipework systems, HVAC systems etc
Pipe freezing applications
Pipe freezing is applicable to a variety of situations in which it would be costly or time-consuming to have to drain the contents of the pipe in order to carry out maintenance or repairs. Examples include:
Pipeline maintenance and repair works
- Pipeline repairs
- Changing of valves, flanges or pumps
- Insert new side valves or branches in a pipe
- Testing for leakage by isolating different sections of a long pipeline
- Isolate one section of fire-protection system without shutting down whole system
- Provide secondary protection on water pipes in nuclear reactors during fuel changes
YUNIK CAPABILITIES
We are capable of providing pipe freezing service for the following applications:
- Freezing of horizontal, vertical and inclined pipes
- Freezing of chilled water, condenser water, sea water
- Freezing of oil-based, hydrocarbon-based fluid and sludge
- Freezing of fluid with glycol (anti-freeze) and most chemicals
- Freezing of leaking pipes
- Freezing of metal, cement-lining, PVC and other plastic pipes
- Freezing of pipe diameters up to 48″