This is an effective and efficient means of isolating a system, freeze plugs are developed within the pipes by applying liquid nitrogen. The cryogenic process begins with heat being removed from the liquid inside the pipe until it reaches a temperature below its freezing point. Once an established freeze plug is formed, Yunik has automated the control of the flow of liquid nitrogen to maintain the proper sized plug based on known system parameters.
How pipe freezing works
Pipe freezing involves the use of liquid nitrogen in the controlled formation of a solid ice plug inside the pipeline using specialist equipment and techniques. Once formed, the plug is able to withstand very high differential pressures and provide reliable and effective isolation of the line while modifications or repairs are carried out.
Pipe Freezing Services can be performed on:
- Valve installations
- Pipe modifications
- Pipe section replacement
- Pipe branch terminations
- Equipment isolation
Pipe Freezing can be used on pipe materials and liquids, including:
- Carbon Steel
- Lined or coated pipes
- Nickel Alloy
- Copper-based Alloys
- Aluminium Alloys
- Stainless Steel etc
Typical pipe product liquids are:
- Liquid food products
- Several chemicals
Qwik- freezer kits
We are agents of COB-industries in freezing equipment supply and training.
Qwik-Freezer® equipment utilizes liquid carbon dioxide (CO2) to freeze stationary water in selected sections of pipe or tubing. By producing very low “dry ice” temperatures, Qwik-Freezer® forms a secure in-line ice plug. This temporarily isolates the water in the system and allows repairs or modifications to be made without draining down or shutting off systems.
Read more about the technology here.