Roxul Industrial Insulation Process User Manual
Page 52
Insulation of v
es
sels
These values can only be used as reference
values. In each individual case, determine
whether different strap measurements and
intervals should be used.
If the insulation is assembled in multiple layers,
the joints of the individual insulation layers must
be staggered (e.g. masonry bond pattern).
For semi-rigid boards (slabs) and wired mats
usually used the insulate vessels with flat vertical
walls the insulation is attached with welding pins
and spring plates. On flat surfaces, attach the
wired mats using minimum 5 pins per board (or
6 pins per m
2
), and a minimum of 8 pins per board
(or 10 pins per m
2
) on the underneath. Observe
the following when pinning the insulation:
With insulation thicknesses ≤ 5" (120 mm), use
8GA (6AWG) pins with a minimum diameter of
0.162" (4 mm).
With insulation thicknesses ranging from 5 1/2"
to 10" (130 to 240 mm), use 6GA (4AWG) pins
with a minimum diameter of 0.2043" (5 mm).
With insulation thicknesses ≥ 10" (240 mm) use
4GA (3AWG) pins with a minimum diameter of
1/4" (6 mm).
If the cladding rests directly on the insulation
without a gap between the two, the pins must
be 3/8" (10 mm) shorter than the insulation
thickness.
Fasten each insulation layer with clips.
With wired mats, all the lengthwise and crosswise
joints must be sewn or wired together, or joined
with 2 mat hooks per foot. If the insulation is
assembled in multiple layers, the joints of the
individual insulation layers must be staggered.
The following illustrations show a number of
typical methods of insulating vessels.
1. Cladding - 2. ProRox
®
insulation - 3. Crane hooks -
4. Insulation covering for the crane hook
External insulation
diameter
Internal insulation layer strap
measurement
External or single layer insulation
strap measurement
Distance between
straps
8" to 72" (200 to 1800 mm)
1/2" x 0.02" (13 x 0.5 mm)
5/8" x 0.02" (16 x 0.5 mm)
10" (250 mm)
> 72" (1800 mm)
5/8" x 0.02" (16 x 0.5 mm)
3/4" x 0.02" (19 x 0.5 mm)
10" (250 mm)
Insulation of a crane hook
49