FireFlex Systems Inc. ARC-1, Руководство по эксплуатации и техническому обслуживанию для владельца

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ICAF -
Integrated Compressed Air Foam System
Foam Supply Section
FM-0723-0-13 C
5. Operation
Foam storage tank
The storage tank (T1) contains foam concentrate under
atmospheric pressure in normal conditions. Upon actuation of
the system, the foam pneumatically activated control valve
(F1) opens, pressurizing the storage tank with air and
expelling the foam concentrate in the foam injection line
through a dip tube
(F2) . Foam concentrate is then injected in
the mixing chamber (C1) through a calibrated orifice (C2)
sized to generate CAF in the correct proportions.
Foam Tank Normal conditions
Before placing the foam tank in service, verify that the piping
between the foam tank and the ICAF System is properly
installed and secured.
1. Tank drain valve
(T3) is locked CLOSED.
2. Tank refill valve (T9) is locked CLOSED.
3. Tank refill vent valve (T6) is locked CLOSED.
4. Sight gauge isolation valves (T4) are locked CLOSED.
5. Foam tank pressure gauge (T7) shows 0 psi (0 kPa)
pressure.
(Refer to Figure 1 for foam storage tank schematic)
Sight gauge
The sight gauge (T5) is a device used to provide visual
indication of the foam concentrate level in the storage tank
(T1) during the system periodic inspections. Sight gauge (T5)
shall not show any reading during normal stand-by and
operating conditions since both its isolation valves
(T4) should
be locked CLOSED.
Level check procedure:
(Refer to figure 2- Foam storage tank schematic).
Normal inspection: Under normal standby conditions, foam
storage tank
(T1) is not pressurized. Sight gauge (T5) should
not show any reading and tank pressure gauge (T7) should
be at 0 psi (0 kPa).
1. Verify that foam storage tank pressure gauge
(T7) shows
0 psi (0 kPa) pressure.
2. OPEN both sight gauge isolation valves (T4).
3. SLOWLY OPEN tank refill vent valve (T6), allowing the
foam concentrate stored in the tank to reach its level in
the sight gauge tube.
4. Check the sight gauge (T5) level:
a) If level is normal , CLOSE the bottom sight gauge
isolation valve (T4) and drain concentrate from level
gauge tube by opening the tank drain valve (T3).
Once the level gauge tube is drained, CLOSE tank
drain valve (T3), both sight gauge isolation valves
(T4) and the tank refill vent valve (T6).
b) If level is below normal , add foam concentrate up
to normal level by following FILLING PROCEDURE
described in section 6.
After a system discharge
Foam storage tank (T1) is pressurized when operated;
therefore pressure must be relieved before a sight gauge
(T5) reading can be taken after a discharge.
1. To allow air to vent from the foam storage tank,
SLOWLY AND PARTIALLY OPEN tank refill vent valve
(T6) until tank pressure gauge (T7) indicates 0 psi (0
kPa) pressure.
2. OPEN both sight gauge isolation valves (T4).
3. SLOWLY OPEN tank refill vent valve (T6). This will
allow the remaining foam concentrate in the tank to
reach its level in the sight gauge tube.
4. Check sight gauge level (T5).
a) If level is normal , CLOSE the bottom sight gauge
isolation valve (T4) and drain concentrate from level
gauge tube by opening the tank drain valve (T3).
Once the level gauge tube is drained, CLOSE tank
drain valve (T3), both sight gauge isolation valves
(T4) and the tank refill vent valve (T6).
b) If level is below normal , add foam concentrate up
to normal level by following FILLING PROCEDURE
described in section 6.
6. Filling Procedure
NOTICE : USE ONLY FOAM CONCENTRATE
APPROVED FOR FIREFLEX'S COMPRESSED AIR
FOAM SYSTEM.
SAFETY NOTICE:
Foam concentrates are primary eye
irritants, and contact with the eyes should be avoided.
Users are advised to wear protective equipment
when filling foam tank. If foam concentrate enters the
eyes, flush them well with water and seek immediate
medical attention. For further details, see foam
concentrate Material Safety Data Sheet.
1. Before starting the fill procedure, insure that the foam
storage tank (T1) is not pressurized. Verify that foam
storage tank pressure gauge (T7) shows 0 psi (0 kPa)
pressure.
2. Verify that you have in hand the amount of foam
concentrate that corresponds to the storage tank rated
capacity.
3. Storage Tank Drain Valve (T3) and Level Sight Gauge
Isolation Valves (T4) should be closed .
4. Open the Foam Refill Valve (T9) and the Foam Refill
Vent Valve (T6).
5. Prime and connect the concentrate pumping apparatus
to the Foam Refill Valve (T9). Use a Hand-operated
Drum Pump, a Centrifugal Pump or Pneumatic Operated
Diaphragm Pump.