Fire Engineering

First Aid for Burns   Introduction   Burns           Burns are the injuries to the skin caused by:         a)  Dry heat of open flame or molten hot metals or electricity.         b)  Corrosive substances – acid and alkalies.         c)   Friction.         d)  Radiation.   Scalds           Scalds are the […]

Fires & Extinguishing Methods   Introduction Depending upon the fuel involved the fire is classified into 6 classes are as follows:   As Per USA & Australia Type of Fire Fire Sources   ‘A’ Class fire Wood, plastic, paper Ordinary solid fuels ‘B’ Class fire Petrol, diesel, paints, oil, acetylene, hydrogen (Flammable liquids & gases)

Hose Introduction Fire Hose is a flexible high pressure tube used by firefighters to carry water/foam under pressure from the source of supply to a point where it is discharged. Hose is a flexible pipe used to convey water the source to the scene of fire.   1. Types of Hose:     (a) Delivery Hose:

Hose Fittings   Definition           Hose fittings are the equipment fitted to a fire hose. Hose fitting is used to connect to the source of water supply, to another hose and to connect the required type of nozzles/branches.   Wrenches: A wrench is suitable for tightening the female coupling is provided. Tightening is essential since

Hydrant Pumps   Introduction What are Hydrant Pumps?           It is a machine which raises water from a lower level to a higher level and from one place to another by the action of centrifugal force.   Centrifugal force           It is that force which acts upon a body moving in a circular path,

Fire Proximity Suits   Definition           Fire proximity suits are clothing for use by firefighters while approaching fire where it is very difficult to tolerate the temperature.   Types of suits Approach suit – 2000F Rescue suit – up to 7000F Entry suit – 7000F and above     There are 2 types of fire:

Fire Hydrant System   Definition            A fire hydrant is a connection point where water is accumulated and connected by pumps by which firefighters can efficiently fight with fire.   Components & their Installation   a. Fire Water Reservoir:      Tanks of adequate capacity depending upon the risk to be covered. They should

Foam & Foam making Equipment     Introduction   Definition:    Foam is concentration for producing mechanical foam for firefighting.   How is fire stopped by foam? A constant foam concentrate is added to the portioner. The resulting water/foam concentrate is expanded with air in the foam generator. The foam blankets the fuel surface smothering

Flammability & Combustibility   Introduction  What is Flammability?     If the material easily catches fire under normal circumstances and with the help or minimal ignition source, just a spark is sufficient. Eg: Propane.   What is Combustibility?     Material like wood and paper require vigorous condition to catch fire, a simple spark is not enough.

Fire Fighting Equipment Introduction   Fire Fighting equipment are of various types which are as follows:  1. AFFF extinguisher 2. CO2 extinguisher 3. DCP extinguisher 

Fire Terminology   Terminology related with Fire.   Fire: Fire is rapid oxidation of combustible matter, so rapid that the heat of reaction isunable to get dissipated to the surrounding atmosphere at the same rate as is being produced.   Oxidation: It is the chemical combination of oxygen with the fuel. It is an exothermic

Fire Fighting Media / Agents Introduction           Firefighting media/agents refers to the substances used to extinguish fires. Water. Foam. CO2. Halon. DCP. Combustible Metal Extinguishing Agent.   1. Water: Water is being used extensively in fighting fires in one way or the other.             Merits It acts as a coolant which keep cool and

Fire Triangle   Introduction           “Fire is an external sign of chemical reaction, usually the combustion of carbon and or the combustion of hydrogen with oxygen, resulting in the release of energy in the form of heat, light and sound”.  Hence, there are three basic elements required for fire: i. Presence of Combustible substance (Fuel),