Installation of Heat Tracing Cables

Heat tracing cables shall be strapped to equipment and pipes using glass fiber tape, spaced
approximately at 300 mm intervals along pipes and as required elsewhere. Stainless steel straps,
AISI 316, or high temperature glass fiber tape shall be used on high temperature cables.

Heat tracing cables should be installed along the lower semi-circle of the pipes.

Cables shall pass through thermal insulation from below or side on vertical pipes.

Heat tracing cables shall be installed in such a way that it allows dismantling of joints, valves,
instruments etc. without cutting or damaging the cable.

Where the heat tracing cables are crossing flanges, thermal insulation covers or other sharp edges,
protectors of stainless steel AISI 316 shall be used.

Heat tracing cables should not be spliced.

Purpose made flexible stainless steel conduit shall be used for protection of the heat tracing cable
between stand alone junction boxes and insulation entry kit.

Flexible conduits protecting heat tracing cables shall be fixed to support approximately every 200
mm.

Heat tracing cables shall be 100 % covered. Exceptions may be in instrument enclosures.

The heat tracing cable should be protected against damage by applying an aluminium tape/foil on
top of the cable when cellular glass is used as insulation material.

1 Like