UTS Ltd offers a cost effective method of carrying out pipe maintenance or line modification without shutdown of plant process. The process involves the use of liquid nitrogen and solid freeze plugs, and minimises draindown, refill and system downtime. The procedure can often be instigated without any system downtime whatsoever, which minimises the loss of expensive process fluids.
Upon completion of work the plugs are thawed and the line is then fully operational. The plugs themselves range in size from
½" to 48" (13mm to 1,220mm) OD.

Pipe Freezing applications include:
Valve Replacement
System Maintenance
Modifications
Pressure Testing
Fire System Integrity

Pipe freezing can be performed in most locations, including:
Chemical & Petrochemical Plants
Fossil Fuel Power Plants
Nuclear Power Plants
Hospitals & Institutions
Industrial & Commercial Production Facilities
Telecommunications Industry
Water & Sewage Treatment
Malls & Shopping Centres
Hotels & Apartment Complexes
Paper Mills
Office Buildings
Fire Protection Systems
Refineries
Schools