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ICAF -
Integrated Compressed Air Foam System
F
Air Supply Section
FM-0723-0-12F
Air supply section
Compressed Air Foam is composed of 90% compressed air.
This air is provided by DOT and TC certified compressed air
cylinders
(V2)
pressurized to 2400 psi (16,547 kPa). Each
cylinder is supplied with a cylinder valve
(V4)
equipped with a
safety relief disc
(V3)
, which provides relief at 3600-4000 psi
(20,684-27,579 kPa).
Factory adjusted air pressure regulators
(V5)
are used to
reduce the storage air pressure to a working pressure of
100 psi (689 kPa) for the system operation.
The cylinders bank pressure is supervised by a pressure
transducer
(V7)
that sends a low pressure supervisory signal
when storage pressure goes under 2200 psi (15,168 kPa).
That pressure represents the minimum pressure required to
provide air supply for the specified system discharge time.
A safety valve
(A2 - mounted in the cabinet)
is also used at
the outlet of the air pressure regulator
(V5)
to protect the
system from high pressure in case of malfunction. The
working air pressure on the system side (downstream of the
air regulator) is adjusted to a maximum of 150
psi
(1034 kPa).
The cylinders bank is factory assembled on a painted steel
skid and includes the cylinders, support brackets, valves,
high pressure tubing, discharge manifold
(V8)
and all the
necessary hardware.
Cylinder valve guards
(V11)
are used instead of cylinder
caps, eliminating the repetitive costs associated with the use
of cylinder caps. These guards protects the cylinder heads
during shipment, therefore no protective caps have to be
removed and most importantly, no tubing or fittings are
required to be installed after receiving.
The cylinders bank is also provided with a refilling outlet
(V9),
which allows refilling the complete bank on-site with a high
pressure compressor, without having to remove any other
parts or having to transport the cylinders to a filling plant.
The skid mounted cylinders bank is available with single or
twin pressure regulator
(V5)
assemblies and is available in
the following storage capacities:
up to 2 cylinders
up to 4 cylinders
up to 6 cylinders
up to 8 cylinders
up to 10 cylinders
1. Air supply design and selection:
The number of cylinders
(V2)
and regulators
(V5)
established
at the design stage is based on both the maximum system
flow and discharge time required for the largest single hazard
protected or group of hazards that are protected
simultaneously.
F
IRE
F
LEX
'
S
program will take that into
account when calculating the system's capacity.
Note regarding air cylinders:
The calculated number of
compressed air cylinders is based on a storage
temperature of 70
F (21
C), for a storage temperature
range between 60
F and 80
F (15.5
C and 26.6
C). Any
storage temperature outside this range must be taken into
consideration during system design phase.
2. Interconnection Piping to ICAF System
There is one interconnection line
(circled item 4)
provided on
all air cylinders banks. This connection is used to supply
compressed air between the cylinders bank and the ICAF
System. Piping is factory prepared according to installation
arrangement and is supplied with the system.
Fig. 1 - Cylinders Bank dimensions & capacity:
Storage
Capacity
Dimensions
(inches)
Nbr of cyls.
W
L
H
2
25
14½
82¼
4 27¼
6 40
8 52¾
10 65¼
Add 2 inches each side to "L" for floor anchors.
Summary of Contents for ICAF System
Page 1: ...Operation Maintenance Manual FM 0723 0 02 A ...
Page 7: ...OWNER S OPERATION MAINTENANCE MANUAL ICAF Integrated Compressed Air Foam System FM 0723 0 5B ...
Page 27: ...Page 4 of 4 ICAF Integrated Compressed Air Foam System System Trim Section FM 0723 0 10 A ...
Page 41: ...Page 2 of 2 J ICAF Integrated Compressed Air Foam System User Notes FM 0723 0 16D User Notes ...
