সরাসরি প্রধান সামগ্রীতে চলে যান

What is Fire Extinguisher?



What is Fire Extinguisher-?

A fire extinguisher is a metal cylinder which contains water or chemicals at high pressure which can put out fires.

The six main fire extinguisher types are water, foam, CO2, powder, water mist and wet chemical.

Classes of fire
There are six classes of fire: Class A, Class B, Class C, Class D, ‘Electrical’, and Class F.

Class A fires – combustible materials: caused by flammable solids, such as wood, paper, and fabric.

Class B fires – flammable liquids: such as petrol, turpentine or paint.

Class C fires – flammable gases: like hydrogen, butane or methane.

Class D fires – combustible metals: chemicals such as magnesium, aluminum or potassium.

Electrical fires – electrical equipment: once the electrical item is removed, the fire changes class.

Class F fires – cooking oils: typically, a chip-pan fire.

How to Use a Fire Extinguisher

In the event of a fire, it is crucial that you are aware of the correct procedures that you need to follow in order to ensure everybody gets out safely.
Should you be required to operate a fire extinguisher, it can be quite confusing as to how to use it correctly and efficiently. Fortunately, there is an easy to remember system that could save your life.

What is PASS?

The ‘PASS’ system stands for Pull, Aim, Squeeze and Sweep. It describes the stages in which a fire extinguisher should be operated and explains what each stage entails, giving enough information for the operator to use the extinguisher safely. While it is totally natural to panic in the event of a fire, if you can remain calm and remember the ‘PASS’ technique, you may well be able to put out the fire and save yourself and those around you from serious consequences.

Pull – Pulling the pin breaks the tamper seal, making the extinguisher ready for use

Aim – Aim at the base of the fire

Squeeze – Squeeze the handle to discharge the extinguisher at the fire

Sweep – Sweep from side to side, keeping the extinguisher pointed at the base of the fire until the fire has gone out. Be careful, as the fire could reignite – repeat steps 2-4 if this is the case.
Collected

 

মন্তব্যসমূহ

এই ব্লগটি থেকে জনপ্রিয় পোস্টগুলি

WHAT IS FIRE RATED GYPSUM DRYWALL?

Gypsum is approximately 21 percent by weight chemically combined water which greatly contributes to its effectiveness as a fire resistive barrier. When gypsum drywall is exposed to fire, the water is slowly released as steam, effectively retarding heat transmission. Fire rated gypsum drywall is more fire resistant because it contains glass fiber reinforcement and other additives within its specially formulated gypsum core to help it hold up longer to a fire exposure. Fire  rated drywall is referred to as “Type X” and must be third-party certified by an independent testing and listing agency such as UL (Underwriters Laboratories Inc.) and ULC (Underwriters’ Laboratories of Canada) to meet the fire performance requirements prescribed in the ASTM C1396 (CAN/CSA-A82.27) Standard Specification for Gypsum Board. Types of Fire Rated Gypsum: Type X fire rated gypsum drywall that is 5/8 -inch (15.9mm) thick and installed on each side of nominal 2-inch x 4-inch (38x89mm) ...

Pipe Schedule Method for Firefighting Sprinkler System

Pipe Schedule Method for Firefighting Sprinkler System                                     Pipe Schedule Method for Firefighting Sprinkler System  The water demand for firefighting sprinkler systems shall be determined by either the pipe schedule method or the hydraulic calculation method, in this article we will discuss the pipe schedule method. What is pipe schedule system?! According to NFPA 13, Pipe Schedule System is defined as sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe. Where can we use pipe schedule method?! New systems of 465 m2 or less. Additions or modifications to existing pipe schedule systems. Classification of occupancies according to hazard NFPA 13 classifies the occupa...

Fire Fighting Systems and Equipment in Buildings

General Fire Fighting Equipment Fire fighting systems and equipment vary depending on the age, size, use and type of building construction. A building may contain some or all of the following features: fire extinguishers fire hose reels fire hydrant systems automatic sprinkler systems. Fire extinguishers Fire extinguishers are provided for a 'first attack' fire fighting measure, generally undertaken by the occupants of the building before the fire service arrives. It is important that occupants are familiar with which extinguisher type to use on which fire. Most fires start as a small fire and may be extinguished if the correct type and amount of extinguishing agent is applied whilst the fire is small and controllable. The principle fire extinguisher types currently available include: Extinguishing Agent     Principle Use Water wood and paper fires - not electrical Foam flammable liquid fires - not electrical Carbon dioxide electrical fir...