FireFlex Systems Inc. ICAF System, Operation & Maintenance Manual

Page: 34 / 41

Page 3 of 4
ICAF -
Integrated Compressed Air Foam System
G
Foam Supply Section
FM-0723-0-13G
Either glass or plastic bottles are satisfactory, provided they
are leak-proof and well packaged. The sample(s) must be
labelled and provide the location, project name, type of
concentrate, lot number and date, storage container, name
and phone number of the person sending the sample(s). The
sample(s) will be evaluated for appearance, foam expansion,
drain time, and film spread, as compared to foam standards.
Foam sample collection procedure
Under normal standby conditions, foam storage tank (T1) is
not pressurized. Sight gauge (T5) should not show any
reading.
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 vent valve (T6), allowing the foam
concentrate stored in the tank to reach its level in the
sight gauge tube
(T5) .
4. Collect the sample of foam concentrate by opening
storage tank drain valve (T3) .
5. Once the sample is collected, close the storage tank
drain valve (T3).
6.
CLOSE
bottom sight gauge isolation valve (T4) and drain
concentrate from level gauge tube by opening tank
drain valve
(T3). Once the level gauge tube is drained,
CLOSE
tank drain valve (T3) , both sight gauge isolation
valves (T4) and tank vent valve (T6).
Foam injection line testing procedure
(Refer to
MECHANICAL OPERATION SECTION
E -
TRIM
SCHEMATICS
)
Regular tests should be performed to verify that the foam
injection line is not clogged by any debris or coagulated foam
concentrate that would impair its proportioning rate.
Under normal standby conditions, foam injection line is not
pressurized. Foam injection line pressure gauge
(F4) should
read 0 psi (0 kPa).
1. System's air supply should be open; air pressure
gauge (A4) inside the ICAF System cabinet should
indicate a pressure of 100 psi (689 kPa).
2.
OPEN
foam injector flushing valve (F5).
3. Wait approximately 5 seconds or until pressure
stabilizes at the foam injection line pressure
gauge
(F4).
4.
CLOSE
foam injector flushing valve (F5).
5. Foam injection line pressure gauge (F4) should vent
quickly and indicate 0 psi (0 kPa) after a few seconds.
6. If the foam injection line doesn't vent properly, the foam
injector (C2) shall be disassembled, cleaned, and
reassembled.
Foam injection line post discharge testing procedure
(Refer to
MECHANICAL OPERATION SECTION
E -
TRIM
SCHEMATICS
)
A test should be performed to verify that the foam injection
line is not clogged by any debris or coagulated foam
concentrate that would impair its proportioning rate.
Under normal standby conditions, foam injection line is not
pressurized. Foam injection line pressure gauge
(F4) should
read 0 psi (0 kPa).
1. System's air supply should be open; air pressure
gauge (A4) inside the ICAF System cabinet should
indicate a pressure of about 100 psi (689 kPa).
2.
OPEN
foam injector flushing valve (F5).
3. Wait approximately 1 minute or until pressure stabilizes
at the Foam injection line pressure gauge (F4).
4.
CLOSE
foam injector flushing valve (F5).
5. Foam injection line pressure gauge (F4) should vent
quickly and indicate 0 psi (0 kPa) after a few seconds.
6. If the foam injection line doesn't vent properly, the foam
injector (C2) shall be disassembled, cleaned, and
reassembled.
Foam injection strainer maintenance
Remove, clean and replace foam injection line strainer (F2)
screen in original position. Inspect cover gasket for damage.
Replace if necessary.
Note: In some instances, a high pressure water jet or steam
may be required for effective cleaning.
Inspection Frequency Table
System/Component Frequency
Foam tank normal conditions Monthly
Foam concentrate level check Annually
Foam sample analysis Annually
Foam injection line test Quarterly
Foam injection strainer maintenance Annually