When the plunger is struck hard, the glass bottle breaks, resulting in mixing of acid and soda, a chemical reaction takes place which produces carbon dioxide gas. A small glass bottle (phial) containing sulphuric acid is placed below a plunger mechanism, which is covered by a safety glass along with a screw and cap at the top. The arrangement of the extinguishers comprises of a container which holds the sodium bicarbonate solution. Related Read: Dos and Don’ts to Avoid Fire in the Ship’s Accommodation Area They combine to form a chemical reaction to produce carbon dioxide gas, which is used to smother the fire. Sodium bicarbonate (soda) and sulphuric acid are the prime components of the extinguisher. The soda acid extinguisher can be found in the accommodation area of the ship. Foam Extinguisher – Chemical and MechanicalĪ soda acid type fire extinguisher is recommended for putting out fires which involve burning of class A fires.There are five main types of fire extinguishers used on ships: The portable type onboard fire extinguisher used in the marine or maritime setup is also known as plunger type fire extinguishers because of the plunger mechanism used to release the extinguishing agent. Based on the above-mentioned classification, portable fire extinguishers are classified and used according to the classes of fire as per IMO. When it comes to choosing a ship fire extinguisher, we need to keep in mind different types of combustible material and fluids which are located in different parts of the ship along with the fire extinguisher reaction with the source of a fire. Type of Portable Fire Extinguisher used in a ship: CO2 or DCP portable fire extinguisher is used in such fires. Hence, if a portable extinguisher with a conductive agent is used for fighting the class E fire, it may lead to a risk of shock to the operator. The dry powder extinguishers are only used for class D fires and they cannot be used for other classification of fire on board ship.Ĭlass E: This type of fire extinguisher on a ship is used for subsiding fire resulting from any of the above-mentioned materials along with high voltage electricity. These elements burn at high temperatures and will react vigorously when coming in contact with water, air, carbon dioxide and/or other chemicals.įor extinguishing this class of fire, Dry Powder extinguishers are used which is similar to dry chemical besides they extinguish the fire by isolating the oxygen from the fuel or by eliminating the heat factor of the fire triangle. Related Read: Hazards Related to Electric Cable Insulation in Case of FireĬlass D: Fires occurring as a result of combustible materials such as magnesium and aluminium are extinguished by this type of fire extinguishers. Usually, CO2 or DCP portable fire extinguisher is used in such fires. A portable co2 fire extinguisher or a portable dcp extinguisher can be used in this class.Ĭlass C: Fires resulting from involvement of energized electrical equipment such as motors, switches, wiring etc are extinguished by Class C type of fire extinguishers. Foam agents also help in separating the oxygen part from the other aspects.Ĭlass B: These fire extinguishers are used for fires which occur from fluids such as lubricating oils, fuels, paints, cooking oil etc. Usually, Water, DCP and Foam fire extinguishers smother the Class A fire by removing the heating factor of the fire triangle. There are five main portable marine fire extinguisher classes:Ĭlass A: These types of fire extinguishers are used in fires which are a result of the burning of wood, glass fibre, upholstery, and furnishing. Related Read: Basics of Fire Prevention On board Ships This makes it easy for the crew to act immediately by choosing the correct type of fire extinguisher on a particular class of fire on board ship.Ī portable fire extinguisher is one of the most convenient and speedy ways to fight the fire on ships. To make it easy for the user, 5 different classes of fire on board ship as per SOLAS. In this article, we will list and discuss different types of SOLAS approved fire extinguishers on board ship (Portable and semi-portable fire extinguishers), which are installed at different parts of the vessel according to the type of fire sources present in that area, their use and also answering the most frequently asked question which – what’s in a fire extinguisher? Related Read: 16 Fire Fighting Appliances and Preventive Measures Onboard Ships Fixed type fire fighting equipment onboard ship.The firefighting system and fire extinguisher types on board ships can be classified into three category – As fires are classified on the basis of the kind of fuel which sources them, fire extinguishers are also classified on the same grounds. The types of fire extinguishers used on board ships depend on the types of fire on a ship and the material which is acting as fuel.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |