Cabon Dioxide Flooding System (CO2 Flooding System)

CO2 flooding system.

Central bank or CO2 flooding system are most commonly used fixed fire fighting system use on-board a vessel. In this system bulk quantity of CO2 is released to protect ER, Cargo hold, purifier room, pump room, etc.

THE MOST COMMON SYSTEM USE ON BOARD ARE :

1) CO2 Total Flooding System.

2) Semi-controlled CO2  System.

3) Bulk CO2 System. 

General Working.
In the system(s) explained below, CO2 bottle/cylinders  flood CO2 to the space where there's fire origin, CO2 from bottle is directed to common manifold then to main valve and then to distribution pipe line to nozzles.

Why CO2 is used?

1) CO2 is an effective fire suppressor agent which may be used in different Classes of fire.
2) It has high expansion rate which allow it to work fast.
3) CO2 density is 1.5 times higher than that of Air, so CO2 settle down and displace air.
4) It can be easily liquefied and bottled.
5) 20 % to 30% of CO2 concentration is sufficient to extinguish fire.
6) Non-Corrosive
7) Non-Conductor of electricity
8) No residue is left after application
9) No deterioration with age.

How CO2 Work for fighting fire?

To fire to exist there should be three element present, namely Air, Combustible material (Fuel) and Source of ignition.
These three together is called as fire triangle. 

whenever anyone of the factor is removed from the triangle, fire is extinguished.

CO2  extinguish fire by excluding/Removing Air (Oxygen), and this exclusion  of oxygen is termed as smothering.

 

 

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