Before knowing about the fire fighting appliances, we should know about What is fire?, Types of fire (i.e. ABC of fire) .
Fire is a chemical exothermic process in which chemical reaction takes place between Oxygen present in the atmosphere and some sort of fuel like wood. Not all fires are the same, and they are classified according to the type of fuel that is burning. It is therefore very important to understand the four different fire classifications.
Class A – Wood, paper, cloth, trash, plastics. Solid combustible materials that are not metals. (Class A fires generally leave an Ash.)
Class B – Flammable liquids: gasoline, oil, grease, acetone Any non-metal in a liquid state, on fire. (Class B fires generally involve materials that Boil or Bubble.)
Class C – Electrical: energized electrical equipments long as it’s “plugged in,” it would be considered a class C fire.
Class D – Metals: Potassium, Sodium, Aluminum, Magnesium.
Unless you work in a laboratory or in an industry that uses these materials, it is unlikely you’ll have to deal with a Class D fire. Most fire extinguishers will have a pictograph label telling you which classifications of fire the extinguisher is designed to fight. For example, a simple water extinguisher might have a label like the one below, indicating that it should only be used on Class A fires.
What are the fire fighting Appliances?
The equipments which are used to prevent or fight against fire are known as fire fighting appliances.
- Fire Extinguisher
- Fireman Suit
- Self Contained Breathing Apparatus
- Fire pump
- International Shore Connection etc.
What are the three technique used to fight fire?
Three things must be present at the same time in order to produce fire.
- Enough oxygen
- Enough heat
- fuel or combustible material
We can fight fire by removing any one of them.
- We cut the oxygen, due to the less oxygen fire will stop.
- Or we reduce the heat for which it will not support combustion.
- Or we move the fuel like wood or anything that catch fire.
How can we prevent fire on ship?
Fire caused by cigarettes is one of the most common causes of fire. All care should be taken to dispose cigarettes (using self closing ashtrays) and never should one smoke in bed.
Ship’s crew should be careful about galley fires, especially by keeping electrical equipment in good order. Senior officers should keep an eye in the galley when provision is being received because this is the time when galley remains unattended for a long time. One of the Proven methods of fire prevention is effective and regular fire patrol. There is no method that can beat physical monitoring.
What is FFA in ships?
Equipment or systems which are used in fire emergencies are called FFA in ship.
When we shouldn’t fight Fire ?
You don’t have adequate or appropriate equipment. If you don’t have the correct type or large enough extinguisher, it is best not to try to fight the fire. You might inhale toxic smoke. If the fire is producing large amounts of smoke that you would have to breathe in order to fight it, it is best not to try. Any sort of combustion will produce some amount of carbon monoxide, but when synthetic materials such as the nylon in carpeting or foam padding in a sofa burn, they can produce highly toxic gases such as hydrogen cyanide, acrolein, and ammonia in addition to carbon monoxide. These gases can be fatal in very small amounts. Your instincts tell you not to. If you are uncomfortable with the situation for any reason, just let the fire department do their job.