Heat tracing systems

Lam, V. and Sandberg, C., Choose the Right Heat Tracing System, Chem. Eng. Prog. March, 1992, pp. 63-67. 

Wiring and terminal connection diagrams for heat-tracing systems. 

Many caustic lines require insulation and heat tracing. Systems should be designed to prevent excessive surface temperatures, especially when using ferrous metal piping. Steam tracing should use standoffs to prevent direct contact of steam lines with pipe walls. High-chloride insulation material should not be applied to stainless steel piping. 

The transfer and storage of materials that have high freezing points and that become viscous or solid at normal ambient temperatures have long been a difficult problem. Consequently, piping and equipment often need to be heated and this is usually accomplished with some type of heat tracing system. Three types of tracing systems are employed ... 

The special process heat trace system provides electrical heating where temperature above ambient is required for system operation and freeze protection. 

The special process heat tracing system has no design requirements associated with safety. 

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