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Fire hazard
- 2. FIRE HAZARD Anything which increases the likelihood of fire. Includes situations that increase the likelihood of fire or may impede escape in the event fire occurs.
- 8. OXIDATION
- 9. RAPID Fire is an oxidation process that happens very fast that light, heat, and sound, are released. Temperature
- 10. OXIDATION = LOSS OF ELECTRONS
- 11. Fuel = reducing agent Oxygen = oxidizing agent
- 12. COMBUSTION
- 15. PYROLYSIS Transformation of a substance produced by the action of heat
- 16. 3 STAGES OF FIRE Incipient Stage A region where preheating, distillation, and slow pyrolysis are in progress. Smoldering Stage Region of fully developed pyrolysis that begins with ignition and includes the initial stage of combustion. Flaming Stage A region of rapid reaction that covers the period of initial occurrence of flame to a fully developed fire.
- 17. CLASSES OF FIRE Class A – fires involving organic solids like paper and wood Class B – fires involving flammable liquids Class C – fires involving flammable gases Class D – fires involving metals Class E – fires involving cooking oils
- 18. FIRE HAZARDS Live flames Causes of sparks Hot objects Chemicals that are potential for ignition Chemicals that can aggravate a fire to become large and uncontrolled Potential threats to fire prevention
- 21. CAUSES OF FIRE Accidents and carelessness Many people believe that f they are careful they are much less likely to have fire Being careful will not stop fire from happening Most fires are not caused by carelessness They are caused by everyday living that is almost impossible for us to change
- 22. CAUSES OF FIRE Electrical Wiring, Outlets, and Faulty Wiring Older homes are particularly susceptible as they were not wired for the many appliances that we have filled our homes with. Homes built in the 50’s-70’s have aluminum wiring that gets very hot and increases the chance of fire.
- 23. CAUSES OF FIRE Appliances Lamps, toasters, refrigerators, clothing iron, and even baby monitors can short out. Appliances can be unplugged when not in use. Cooking Major cause of residential fires. Not due to effective stoves but unattended pots or burner.
- 24. CAUSES OF FIRE Children playing Burns = no.1 cause of accidental deaths in children under 2 years old. Fire and burn injuries are the 2nd leading cause of accidental deaths in children ages 1-4 and 3rd leading cause of injury and death for ages 1-8
- 25. WHAT DOYOU DO WHEN… 1.You are in a building and the machine near you combusts? 2.The fire alarm sounds in your building? 3.The room or hallway is caught in smoke? 4.You trapped in a room and there is fire outside? (what do you do to keep out the smoke?) 5.Your clothing is on fire? 6. A fire is starting and there is a fire extinguisher near you? 7.Your classmate is on fire?
- 26. BASIC RESPONSE PROCEDURES DURING A FIRE INCIDENT How you react in an emergency depends on how well you have prepared for that emergency.
- 27. 1. “RACE” Remove anyone from immediate danger Activate building fire alarm system and call 911 Confine the fire by closing all windows and doors. Evacuate and leave the building Extinguish the fire if it can be done safely
- 28. 2. HOWTO SURVIVE A BUILDING FIRE Crawl if there is smoke Feel doors before opening Go to nearest exit Use exit stair, NO elevators Close doors Use fire extinguisher if possible Stop, Drop and Roll If trapped: Close doors, seal cracks, open windows when safe, signal for help/call 911, don’t jump!
- 29. 3. IFYOU ARE PHYSICALLY IMPAIRED If you are disabled (even temporarily) Learn about fire safety Plan ahead for fire emergencies Be aware of your own capabilities and limitations Look for areas for refuge If there is immediate threat to safety, ask others for assistance or call 911 to report and receive instructions.
- 31. FIRE EXTINGUISHER ChemicalType A – wood, paper B – gas, liquid, grease C – electrical equipment
Editor's Notes
- Ancient greeks believed that fire was one of 4 basi elements
- Fire is not a substance
- Chemical reaction