SELECTION & OPERATION

OF

FIRE EXTINGUISHERS

SUITABILITY OF EXTINGUISHING MEDIA

A-Class

Ordinary

Fire

B-Class

Liquid Fire

C-Class

Gas Fire

Electrical

Fire

Water Type

Ext

Foam Type Ext

DCP Type Ext

CO2 Type Ext

Clean Agent

Ext

SUITABILITY – OTHER CONSIDERATIONS

Energized Electrical Equipment – DCP or

CO2 of Clean Agent

Sensitive Electrical / Electronic /

Computerized Equipments – CO2 or Clean

Agent

Usage of DCP inside confined space reduces

visibility.

Before using CO2 or Clean Agent in confined

unventilated space, vacate the occupants.

FIRE EXTINGUISHERS

HOW THEY WORK ?

DCP (CARTRIDGE) TYPE EXTINGUISHER

Plunger is pushed inside.

CO2 cartridge seal is broken.

CO2 is released and flow is regulated by inner container.

Due to CO2 pressure, powder rises inside siphon tube.

DCP is discharged from tube.

Once activated, discharge can’t be stopped.

WATER (CARTRIDGE) TYPE EXTINGUISHER

Plunger is pushed inside.

CO2 cartridge seal is broken.

CO2 is released and flow is regulated by inner container.

Due to CO2 pressure, water rises inside siphon tube.

Water is discharged from Nozzle.

Once activated, discharge can’t be stopped.

IF OPERATED UPSIDE DOWN. . .

ABC (STORED PRESSURE) TYPE EXTINGUISHER

Contains advanced ABC Powder.

Discharge lever / squeeze grip is squeezed.

DCP rises inside siphon tube due to pressurized Nitrogen.

Powder is discharged from Nozzle/tube.

Pressure guage to check healthiness.

Discharge can be stopped by releasing squeeze grip.

CARBON DI-OXIDE (CO2) TYPE EXTINGUISHER

Rotate ball valve at the top

anti-clockwise.

Pressurized CO2 inside

cylinder rises inside siphon

tube.

CO2 gas is discharged

from Discharge Horn.

Discharge can be stopped

by rotating ball valve

clockwise.

MODULAR (ABC) AUTOMATIC EXTINGUISHER

Ceiling mounted extinguisher with bulb type sprinkler discharge head.

Pressure guage to check healthiness.

At 68°C, the sprinkler bulb bursts.

N2 gas acts as propellant and powder is discharged from sprinkler head.

Once activated, discharge can’t be stopped.

FM 200TOTAL FLOODING SYSTEM

FM-200 SYSTEM - ARCHITECTURE

FM-200 SYSTEM ACTUATION MECHANISM

FIRE SAFETY

CHECKLIST

CHECKLIST – HIGHRISE BUILDING

CHECKLIST – BRANCHES