Test Data
Fire Tests
Introduction
All fire tests where conducted by the WARRINGTON RESEARCH CENTRE
to BRITISH STANDARD 476 PART 20 1987.
This test describes the performance of structural elements under fire conditions,
and considering there is no standard test for this type of fire damper it was
decided to mount both a fusible link operated, and also an electro-magnet
operated fire damper in a standard 1 hour timber fire door.
Test Description
Tests were conducted in order to test both the stability and integrity of the units,
and it was felt that mounting them in a fire door would demonstrate the most
severe combined situation for which the units would likely be installed. Not only
were the fire dampers scrutinised during the test, but also the combined
situation thus demonstrating the total integrity of the installation.
Units tested were of a size 400 Wide x 400mm High which is the largest
manufactured size for this type of unit. They were installed within 54mm thick
fire doors with a suitable backing flange, and secured with mild steel bolts from
one face flange to the other through the door itself. The combined assembly was
placed vertically against one open side of a 1m
3
furnace and then securely
bolted to maintain an air seal between.
Test Results
The duration of the test was 1 hour, and only slight charring of the timber around
the damper frame was apparent after this time. At the end of the test the integrity
and stability of both the damper and door had been maintained.
Air Flow
Test Data
Introduction
The air flow test was conducted by the Building Research and Information Association.
3
2
100
9
8
7
6
5
4
3
2
10
9
8
7
6
5
4
3
2
1.0
0.0001
0.001
0.01
Pressure drop across unit Pa
VOLUME M
3
/
s
A
IR FLOW LEAKAGE CHARACTERISTIC OF A
300
X
200
MM
S
MOKEGARD FIRE DAMPER IN THE CLOSED POSITION
F
LOW RATE
-
PRESSURE DROP CHARACTERISTIC FOR MULTI
-
BLADE FIRE DAMPER IN OPEN POSITION
100
9
8
7
6
5
4
3
2
Pressure drop across unit Pa
10
9
8
7
6
5
4
3
2
200x100
300x100 200
x200
40
0
x100
30
0
x200
20
0
x300
40
0
x200
30
0
x300
200x
4
00
400x
3
00
300x
4
00
400x
4
00
0.01
0.1
1.0
VOLUME M
3
/
s
0.05
0.5
TEST DURATION
100
200
300
400
500
600
700
800
900
1000
0
1100
1200
TEMPERATURE - DEGREES C
S
TANDARD TIME
-
TEMPERATURE
CURVE OF
BS476 PART 20 1987
12
