TM 1-1500-204-23-11
Figure 6-40. Thermocouple Placement in Repair Area
(1) Inspection. Prior to heat blanket use, per-
(a) Ensure the heat blanket overlaps the
form the following inspections:
repair by a minimum of 2 inches on
each side to ensure even heating of the
repair. This is necessary as tempera-
(a) Inspect the wires, connectors, and heat-
tures on the edges of the heat blanket,
ing pad for loose or frayed wires or sili-
especially constant watt density blan-
con cracking.
kets, can be as much as 50 F cooler
than the rest of the heat blanket. A
(b) Energize the heating pad and ensure all
smaller overlap may only be used if a
areas of the heating pad are working.
thermal survey has been performed and
It s possible for a defective heating pad
actions taken to ensure even heating of
to heat one side or area and be cool on
the repair. For structures thicker than
another.
0.100 inch, an overlap greater than 2
inches may be required.
(2) Use. Follow the manufacturer s guidelines
and the following: