classes of fire extinguishers

Fire drills in schools in UK

Fire drills

An overview of how schools should carry out a fire drill.

It is the duty of the Chief Instructor and governing body of the premises to ensure that fire evacuation drills are carried out.

The dangers which may intimidate children and staff if a fire breaks out depends on many different factors. Consequently, it is not possible to construct a model procedure for action in the event of fire which would be suitable for use in all premises.

Each fire routine must be based upon a simple, efficient procedure which is specifically designed for the premises in which it has to utilize. It is therefore important that the following points must be given prime consideration.

The mean of the fire drill for the Students

Fire drills are intended to ensure, by means of orienting and rehearsal, that:

  • people who may be in risk act in a calm and orderly manner
  • those with function carry out their tasks to ensure the safety of all concerned
  • Evading routes are used in accordance with a predetermined and practiced plan
  • evacuation of the Structure is achieved in a speedy and orderly manner
  • people will react rationally when confronted with a fire or other emergency at school or elsewhere.

The residency of the premises

Deliberation must be given to the age of the pupils attending the school and whether there are any children with special needs.

 

A fire drill is a procedure of practising how a building would be vacate in the event of a fire or other emergency. Usually, the building’s prevail fire alarm system is activated and the building is evacuated as if the emergency had occurred. Normally, the time it takes to evacuate is unfaltering to ensure that it occurs within a reasonable length of time, and problems with the emergency system or evacuation procedures are identified to be remedied.

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Types of Fire Extinguishers

Types of Fire Extinguishers

Fire incidents are one of the most common accidents that happen everywhere. These incidents could be cause by artificial or natural means, can also be incidental or intentional but that’s a different issue. Nevertheless these kinds of incidents are harmful.

One of the means of dealing with Fire Incidents is the use of Fire extinguishers. Commonly Fire Incidents happen due to the following materials

  • Class A extinguishers are for ordinary combustible materials such as paper, wood, cardboard, and most plastics. The numerical rating on these types of extinguishers indicates the amount of water it holds and the amount of fire it can extinguish. Geometric symbol (green triangle)
  • Class B fires involve flammable or combustible liquids such as gasoline, kerosene, grease and oil. The numerical rating for class B extinguishers indicates the approximate number of square feet of fire it can extinguish. Geometric symbol (red square)
  • Class C fires involve electrical equipment, such as appliances, wiring, circuit breakers and outlets. Never use water to extinguish class C fires – the risk of electrical shock is far too great! Class C extinguishers do not have a numerical rating. The C classification means the extinguishing agent is non-conductive. Geometric symbol (blue circle)
  • Class D fire extinguishers are commonly found in a chemical laboratory. They are for fires that involve combustible metals, such as magnesium, titanium, potassium and sodium. These types of extinguishers also have no numerical rating, nor are they given a multi-purpose rating – they are designed for class D fires only. Geometric symbol (Yellow Decagon)
  • Class K fire extinguishers are for fires that involve cooking oils, trans-fats, or fats in cooking appliances and are typically found in restaurant and cafeteria kitchens. Geometric symbol (black hexagon)

And these are the Types of Fire Extinguishers:

·         Water and Foam fire extinguishers extinguish the fire by taking away the heat element of the fire triangle. Foam agents also separate the oxygen element from the other elements.

·         Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge.

·         Dry Chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. Using the incorrect agent can allow the fire to re-ignite after apparently being extinguished successfully.

·         Wet Chemical is a new agent that extinguishes the fire by removing the heat of the fire triangle and prevents re-ignition by creating a barrier between the oxygen and fuel elements.

·         Halogenated or Clean Agent extinguishers include the halon agents as well as the newer and less ozone depleting halocarbon agents. They extinguish the fire by interrupting the chemical reaction of the fire triangle.

·         Dry Powder extinguishers are similar to dry chemical except that they extinguish the fire by separating the fuel from the oxygen element or by removing the heat element of the fire triangle.

·         Water Mist extinguishers are a recent development that extinguishes the fire by taking away the heat element of the fire triangle. They are an alternative to the clean agent extinguishers where contamination is a concern.

·         Cartridge Operated Dry Chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle.

 

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