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Monday, January 4, 2010

OPERATING PROCEDURE FOR SODA ACID FIRE EXTINGUIGHER

1.0 OBJECTIVE

2.0 SCOPE

3.0 RESPONSIBILITY

4.0 PROCEDURE

To operate the extinguisher , remove the guard cap and strike the plunged against a hard surface like the floor keep the cylinder inverted.

Direct the jet emerging from the nozzle on the base of fire. When the plunger is struck , it breaks the acid phial (bottle ) .

The sulphuric acid and sodium bicarbonate solution react together to release carbon dioxide (CO2 )

The CO2 generated creates pressure which forces the water out of the extinguisher .

Note : the CO2 acts only as a propellant and water extinguishes the fire cooling effect.

1 comment:

Nitin said...

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Regards,
Nitin Vanjari
Universal Starch chem Allied Limied,
Dondaicah (Maharashtra)