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| Circular number | No. STC-GS-3 |
|---|---|
| Type | Commercial Circular |
| Topic | catering |
Relief description: Fire affected coach from formation by GDR and tried to put off the fire with fire extinguishers
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FIRE CAUSES AND ELECTRICAL SAFETY MEASURES
IN RAIL COACHES
Phase II – Module No. STC-GS-3
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FIRE
Fire defined as chemical reaction accompanied by evolution of energy in form of heat & light. For a Fire to occur, mixture of oxygen, heat & fuel is required.
Three main elements required to ignite a flame. Without any one of these, it is not possible to start a fire. These three elements are: Oxygen, Fuel and Heat
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# FIRE TRAINGLE
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# COMMON FIRE CLASSIFICATIONS
Class A :“
Ordinary” combustibles
Paper, wood, rubber, plastics,
textile, etc.
Class B:“Flammable liquids”
Oil, gasoline, solvents
Class C :“Flammable Gases”
LPG, Hydrocarbons
Class D: Reactive metal fires.
sodium, titanium, magnesium, potassium, uranium, lithium, plutonium, and calcium
Class E: Electrical equipment
Class K:Cooking oils and
fats (kitchen fires)
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# TYPES OF FIRE
CLASS A – Wood, Paper, Cotton etc- Water Type Ext.
CLASS B – Petrol, Diesel etc – Foam/CO2 Type Ext.
CLASS C- LPG – Dry Chemical powder/ CO2 Type Ext.
CLASS D- Metals like Sodium etc – Special DCP
In case of Electrical Fires, DCP or CO2 Extinguishers should be used.
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# PORTABLE FIRE EXTINGUISHERS
First Aid Fire Fighting Equipment
First Line of Defense
Controls the fire at its early stage
Useless on large fires
Available in various capacities like 2 kg, 5 kg, 10 kg, 50 kg, 100 kg, 150 kg.
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# FIRE EXTINGUISHERS
DCP Type
Gas Cartridge Type
Stored Pressure Type
Trolley Mounted (Gas Cartridge ) Type
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How to Use a Fire Extinguisher
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AIM AT THE BASE OF THE FIRE
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Before attempting to fight a small fire, be sure everyone is out of the area. Ensure someone has called the fire department. If the fire starts to spread or threatens your escape path, get out immediately!
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The operator must know how to use the extinguisher quickly without taking time to read directions during an emergency. Remember that the extinguishers need care and must be recharged after every use.
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IF YOU FIGHT A FIRE, REMEMBER THE WORD P A S S
PULL . . . AIM . . . SQUEEZE . . . SWEEP
PULL... the pin. Some extinguishers require releasing a lock latch, pressing a puncture lever or other motion.
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AIM... low, pointing the extinguisher nozzle (or it's horn or hose) at the base of the fire.
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SQUEEZE... the handle. This releases the extinguishing agent.
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SWEEP... from side to side at the base
of the fire until it appears to be out. Watch the fire area
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