Clean Agent System Sizing
9
Da te : Nov eco FM‐ mber, Um dary 200 Utili 012 Al‐ Tec ty Build uwa nical ng Calc in Sch lations ol Rev.
Transcript of Clean Agent System Sizing
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Da
te : Nov
eco
FM‐
mber,
Um
dary
200 Utili
012
Al‐
Tec
ty Build
uwa
nical
ng Calc
in
Sch
lations
ol
Rev.
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Calculations
November 2012, Rev.0
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Umm Al-Quwain Secondary Technical School
FM-200 Fire extinguishing systems:
1. FM-200 system (1) for M.V. Switchgear room:
Room Length = 26 m
Room width = 6.5 m
Room area = 169 m²
Total Room volume = 169 x 5.25 = 887.25 m³
For using FM-200 with density of 0.6 kg/m³ based on 7 % concentration, taking 10% as
a safety factor
Total Amount of agent for the room = 887.25 x 0.6 x 1.1 = 585.6 kg
For discharging at maximum time of 10 seconds:
Total Agent flow rate = 585.6 / 10 = 58.56 kg/sec
cylinders: No of
Three cylinders, filled with 200 kg agent each.
For DC Battery Room:
Room Length = 4 m
Room width = 2.5 m
Room area = 10 m²
Room volume = 10 x 5.25 = 52.5 m³
Amount of agent for DC Battery Room = 52.5 x 0.6 x 1.1 = 34.65 kg
For discharging at maximum time of 10 seconds:
Agent flow rate for DC Battery room = 34.65 / 10 = 3.46556 kg/sec
No of nozzles:
one nozzle with 25mm diameter.
:For M.V. Switchgear room
Room Length = 26 m
Room width = 6.5 m
Room area = 159 m²
Room volume = 159 x 5.25 = 834.75 m³
Amount of agent for M.V Switchgear Room = 834.75 x 0.6 x 1.1 = 551 kg
For discharging at maximum time of 10 seconds:Agent flow rate for the room = 551 / 10 = 55.1 kg/sec
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No of nozzles:
Four nozzles with 50 mm diameter each.
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2. FM-200 system (2) for Transformers room:
Room Length = 26 m
Room width = 10 m
Room area = 260 m²
Room volume = 260 x 5.25 = 1365 m³
For using FM-200 with density of 0.6 kg/m³ based on 7 % concentration, taking 10% as
a safety factor
Amount of agent for the room = 1365 x 0.6 x 1.1 = 900 kg
For discharging at maximum time of 10 seconds:
Agent flow rate for the room = 900 / 10 = 90 kg/sec
No of cylinders:
Four cylinders, filled with 230 kg agent each
No of nozzles:
Seven nozzles with 50mm diameter each.
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3. FM-200 system (3) for L.V Room:
Room Length = 26 m
Room width = 14 m
Room area = 364 m²
Room volume = 364 x 5.25 = 1911 m³
For using FM-200 with density of 0.6 kg/m³ based on 7 % concentration, taking 10% as
a safety factor
Amount of agent for the room = 1911 x 0.6 x 1.1 = 1261 kg
For discharging at maximum time of 10 seconds:
Agent flow rate for the room = 1261 / 10 = 126.1 kg/sec
No of cylinders:
Four cylinders, filled with 300 kg agent each
No of nozzles:
Ten nozzles with 50mm diameter each.
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Calculations
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4. FM-200 system (3) for IT & BMS Room:
Room Length = 4 m
Room width = 3 m
Room area = 12 m²
Room volume = 12 x 5.55 = 66.6 m³
For using FM-200 with density of 0.6 kg/m³ based on 7 % concentration, taking 10% as
a safety factor
Amount of agent for the room = 66.6 x 0.6 x 1.1 = 43.96 kg
For discharging at maximum time of 10 seconds:Agent flow rate for the room = 43.96 / 10 = 4.4 kg/sec
No of cylinders:
one cylinder, filled with 50 kg agent each
No of nozzles:
one nozzle with 25 mm diameter.
