Total flood with local app guide

Guide for calculating requirements for CO2systems
that combine local application and total flood hazards.
1.Calculate all total flood hazards discharge quantity
requirements. (lb)
2.Calculate all local application hazards flow rates.
(lb/min)
3.Create a table as shown below.
4.Enter total flood quantities into column number 2 (if
applicable).
5.Convert total flood requirements to increased flow
rates for combined systems.
a.HPCO2
i. Flow rate = Total flood Qty. / (1.4 X Local
app liquid discharge time in minutes)
b.LPCO2
i. Double total flood Qty. and insert as flow rate
for that hazard.
6.Enter converted flow rate in column number 3.
7.Enter local app flow rates in column number 3.
8.Add flow rates to get system total.
9.Convert total system flow rate to storage quantity.
a.HPCO2
i. Total storage Qty. = Total system flow rate X
1.4 X Local app liquid discharge time in
minutes.
b.LPCO2
i. Total storage Qty. = Total system flow rate X
1.3 X Local app liquid discharge time in
minutes. (Use for estimating. Calculation
Qty. will likely be less.)

Hazard names
Total flood Qty
.
(lb) if applicable
Flow rate
(lb/min)
Total flood #1
Total flood #2
Local app #1
Local app #2 Total flow rate =
Total storage qty.=
Example: HPCO2
Hazard requirements
Total flood surface 200 lb CO2
Total flood deep seated 800 lb CO2
Local app rate by area 75 lb/min for 30 sec of liquid
Local app rate by volume 225 lb/min for 30 sec of liquid
Hazard names
Total flood Qty
.
(lb) if applicable
Flow rate
(lb/min)
Total flood #1 200 286
Total flood #2 800 1,143
Local app #1 75
Local app #2 225
Total flow rate = 1,729
Total storage qty.= 1,211

Example: LPCO2
Hazard requirements
Total flood surface 200 lb CO2
Total flood deep seated 800 lb CO2
Local app rate by area 75 lb/min for 30 sec of liquid
Local app rate by volume 225 lb/min for 30 sec of liquid
Hazard names
Total flood Qty
.
(lb) if applicable
Flow rate
(lb/min)
Total flood #1 200 400
Total flood #2 800 1,600
Local app #1 75
Local app #2 225
Total flow rate = 2,300
Total storage qty.= 1,495