User's Manual

W
C
750 lb.=
Design
P/N 81-CO2MAN-001 3-9 September 2013
EXAMPLE 2 - TOTAL FLOODING FOR SURFACE FIRES - Material Conversion Factor
Consider a room with dimensions of 20 ft. by 30 ft. by 10 ft. . Determine the
carbon dioxide quantity required for suppression, if the hazard contains acetylene.
From Equation (2):
Where is the Basic Quantity (34%) and
is the Material Conversion Factor.
From Equation (1):
Where is Volume Of The Protected Space and is the Volume Factor.
= 20 ft. x 30 ft. x 10 ft.
= 6,000
ft.
3
= 20 ft.
3
/lb. from Table 3-2 for volumes 4,501 ft.
3
to 50,000 ft.
3
.
From Table 3-1, the design concentration for acetylene is 66%.
Using Figure 3-1, the Material Conversion Factor for 66% is approximately 2.5.
L
W
H
W
C
W
B
f
C
=
W
B
f
C
W
B
Vf
1
=
V
f
1
V
V
f
1
W
B
Vf
1
=
W
B
6000 20=
W
B
300 lb.=
f
C
W
C
W
B
f
C
=
W
C
300 2.5=