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Basic fire safety
This document provides training on basic fire safety and fire extinguishing. It discusses the definition of fire, the fire tetrahedron, different classes of fire types, stages of fire, how to use a fire extinguisher, fire fighting systems, and forming a fire fighting team. The training covers identifying fires, appropriate extinguishing methods based on fire class, inspecting fire extinguishers, PASS techniques for operating an extinguisher, and establishing a fire prevention team with defined roles.
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Basic fire safety
- 1. Training on BasicFire Safety & Extinguishing Training Conducted By Engr. Ali Kamal Mostofa Rubel(Electrical) MPH in Occupational Health & Safety alikamalmostofa@gmail.com +880 1682560119
- 2. Objective 1. Whatis Fire? 2. Fire Tetrahedral 3. Class of Fire 4. Stage of Fire 5. How to Extinguish Fire 6. Fire Fighting System 7. How to use Fire Extinguisher 8. Fire Fighting Team
- 3. What is Fire? Therapid oxidation of a fuel evolving heat, particulates, gases and non- ionizing radiation. Another point of view Fire is a chemical reaction among Heat, Fuel and Oxygen with considering of Flash point.
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- 5. Fire Tetrahedral The CombustionProcess • Four components • Need all four components to start a fire • Fire extinguishers remove one or more of the components.
- 6. Class of Fire 1.Solid fire - Class – A 2. Liquid fire - Class – B 3. Gas fire - Class – C 4. Metal fire - Class – D 5. Electrical fire - Class – E 6. Cooking fire - Class – F
- 7. Class – A(Solid fire) Solid Fire: Class A Fires consist of ordinary combustibles such as wood, paper, trash or anything else that leaves an ash. Water works best to extinguish a Class A fire. Example: Wood, Paper, Cloth, Etc. Extinguishing Method: Dry Chemical Powder, CO2
- 8. Class – B(Liquid fire) Liquid fire: • Class B Fires are fueled by flammable or combustible liquids, which include oil, gasoline, and other similar materials. Smothering effects which deplete the oxygen supply work best to extinguish Class B fires. Example: Gasoline, Oil, Grease, Other solvents, Etc. Extinguishing Method: Foam type Fire Extinguisher
- 9. Class – C(Gas fire) Gas Fire: A class C fire refers to a fire that involves flammable gases such as natural gas, petroleum gas, butane, hydrogen, acetylene or propane. These gases are highly combustible and may cause large scale fires and explosions if mixed with enough oxyge. Example: Mithen, Propen, LP Gas, Etc Extinguishing Method: Dry Chemical Power, Sand, Soil
- 10. Class – D(Metal fire) Metal Fire: Class D Fires are combustible metal fires. Magnesium and Titanium are the most common types of metal fires. Once a metal ignites do not use water in an attempt to extinguish it. Only use a Dry Powder extinguishing agent. Dry powder agents work by smothering and heat absorption. Example: Magnesium, Sodium, Iron, Aluminum, Titanium, Etc Extinguishing Method: Talcum powder, Graphite powder, Sand, Soil, Etc
- 11. Class – E(Electrical fire) Electrical Fire: Class C Fires. Energized Electrical Fires are known as Class C fires. Always de-energize the circuit then use a non-conductive extinguishing agent. Such as Carbon dioxide. Example: Computer, Fax machine, Etc Extinguishing Method: CO2, Dry Chemical Powder
- 12. Class – F(Cooking fire) Cooking Fire: Class F Fires are fires that involve cooking oils, grease or animal fat and can be extinguished using Purple K, the typical agent found in kitchen or galley extinguishers. Example: Fires involving combustible oils, lards and fats in commercial cooking. Extinguishing Method: Foam type Fire Extinguisher, Wet Chemical
- 13. What is FireExtinguisher? A fire extinguisher is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user, or otherwise requires the expertise of a fire brigade.
- 14. Stages of Fire Incipientto Growth= 5 minute Growth to Fully Developed= 10 minute Fully Developed stage= No use of fire extinguisher need Fire Brigade Decay= Hidden fire again has chance to start fire.
- 15. Fire Fighting System 1.Active Fire Fighting System: Fire extinguisher Fire hose reels Fire blankets Sprinkler systems Smoke alarms Automated fire doors Thermal detectors Fire control systems 2. Passive Fire Fighting System: Means of Egress Fire resistant Wall Fire rated Door & Window Fire rated Paint Fire rated clothing & Fabrics Floor evacuation Venting system
- 16. Fire Extinguisher Anatomy DISCHARGEHOSE DISCHARGE NOZZLE DISCHARGE ORIFICE DATA PLATE CARRYING HANDLE PRESSURE GAUGE (not found on CO2 extinguishers)DISCHARGE LEVER DISCHARGE LOCKING PIN AND SEAL BODY
- 17. Portable Fire ExtinguisherInspection Passed Not Passed Not Passed
- 18. How To UseFire Extinguisher PULL... Pull the pin. This will also break the tamper seal. AIM... Aim low, pointing the extinguisher nozzle (or its horn or hose) at the base of the fire. ... SQUEEZE... Squeeze the handle to release the extinguishing agent. SWEEP... Sweep from side to side at the base of the fire until it appears to be out.
- 19. Fire Prevention Team TeamLeader Fire Extinguishing Team Rescue Team First Aid Team 1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 1. 2. 3. 4. 5.
- 20. Color Code ofFire Fighting Team
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