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T
OTAL
P
AC
®
3
B
Integrated Fire Protection System
Mechanical Section - Non Interlock Preaction System - Pneumatic Release
FM-076A-0-41C
1.7 Inspections and tests
NOTICE
: The owner is responsible for maintaining the fire
protection system and devices in proper operating
condition.
It is imperative that the system be inspected and tested on
a regular basis in accordance with NFPA-25. Refer to
Inspections and Tests recommended in Viking technical
data describing individual components of the preaction
system used.
The frequency of the inspections may vary due to
contaminated or corrosive water supply, corrosive
atmospheres, as well as the condition of the air supply to
the system. For minimum maintenance and inspection
requirements, refer to NFPA-25. In addition, the
AUTHORITY HAVING JURISDICTION
may have additional
maintenance, testing, and inspection requirements that
must be followed.
WARNING !
Any system maintenance that involves placing
a control valve or detection system out of service may
eliminate the fire protection capabilities of that system.
Prior to proceeding any testing, notify all local
AUTHORITIES
HAVING JURISDICTION
. Consideration should be given to
employment of a fire patrol in the affected areas.
1.7.1 System piping network low air supervisory test
1. To prevent operation of the deluge valve
(A1)
and filling
of the piping network with water during the test,
CLOSE
main water supply valve (
D1
) and
OPEN
flow test
valve
(B6)
.
2. If applicable, verify that the shut-off valve
(D4)
is
OPEN
.
3.
FULLY OPEN
the inspector's test valve on the system
piping network, or the main drain valve
(D3)
.
4. Verify that low air supervisory signal operate within
acceptable time period and continue without
interruption.
5.
CLOSE
the inspector's test valve, or the main drain
valve
(D3)
.
6.
CLOSE
priming valve
(B1)
.
7. Establish recommended supervisory pressure to the
system piping network (see section
D
AIR
SUPPLY
).
8.
OPEN
priming valve
(B1)
. Verify that the pressure
indicated at the priming pressure gauge
(B11)
is equal
to, or greater than the pressure indicated at the water
supply pressure gauge
(B12)
.
9.
PARTIALLY OPEN
main water supply valve
(D1)
.
10. When full flow develops from the flow test valve
(B6)
,
CLOSE
the flow test valve. Verify there is no flow from
drip check valve
(B7)
when the plunger is pushed.
11.
FULLY OPEN
the main water supply valve
(D1)
.
1.7.2 Pneumatic release piping network (pilot line) low
air supervisory test
1. To prevent operation of the deluge valve
(A1)
and filling
of the piping network with water during the test,
CLOSE
main water supply valve (
D1
) and
OPEN
flow test
valve
(B6)
.
2.
FULLY OPEN
the inspector's test valve on the piping
network being tested.
3. Verify that low air alarm signal operate within acceptable
time period and continue without interruption.
4.
CLOSE
the inspector's test valve.
5.
CLOSE
priming valve
(B1)
.
6. Establish recommended supervisory pressure to the
system piping network (see section
D
AIR
SUPPLY
).
7.
OPEN
priming valve
(B1)
. Verify that the pressure
indicated at the priming pressure gauge
(B11)
is equal
to, or greater than the pressure indicated at the water
supply pressure gauge
(B12)
.
8.
PARTIALLY OPEN
main water supply valve
(D1)
.
9. When full flow develops from the flow test valve
(B6)
,
CLOSE
the flow test valve. Verify there is no flow from
drip check valve
(B7)
when the plunger is pushed.
10.
FULLY OPEN
the main water supply valve
(D1)
.
1.7.3 Full flow trip test
Performance of a full flow trip test is recommended
annually during warm weather. Consider coordinating this
test with operation testing of the releasing devices.
Caution !
Performance of this test will cause the deluge
valve
(A1)
to open and the system piping network to be
filled with water. If it is not required to fill the system piping
network with water, use the shut-off valve (if applicable)
(see paragraph 1.7.5
OPERATION OF THE SHUT-OFF VALVE
of
the current section).
To trip test the pneumatic release system
1. Trip the deluge valve
(A1)
by performing the following
paragraph “a” or “b”.
a) Open the inspector's test valve from the pneumatic
release piping network (pilot line) or activate a
pneumatic
release
device
according to the
manufacturer's instructions.
b) Open the door of the manual emergency release
valve
(B10)
and trigger the handle.
2. The deluge valve
(A1)
should open. Alarm devices
(C1
and optional
C2)
should operate. The piping network
will be filled with water.
3.
OPEN
the inspector's test valve from the system piping
network to verify adequate flow.
