Fire fighting active system


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Fire fighting active system

  1. 1. ACTIVE FIRE FIGHTING SYSTEM • Function : 1- To detect the early stage of fire 2- To give the fire emergency warning 3- To help people rescuing themselves 4- To give an early stage of help. • 2 types of Active System : 1- Portable 2- Fixed
  3. 3. FIRE EXTINGUISHER • A portable fire extinguisher must contain the type of fire extinguishing agent suitable for the fire it is required to extinguish. • It must also be clearly identifiable by colour coding for its intended purpose. • Fires can be grouped: ● Solid fuels, e.g. wood, paper, cloth, etc. ● Flammable liquids, e.g. petrol, oil, paints, fats, etc. ● Flammable gases, e.g. methane, propane, acetylene, etc. ● Flammable metals, e.g. zinc, aluminium, uranium, etc. ● Electrical.
  4. 4. FIRE EXTINGUISHER (TYPES) WATER - paper,woods &co2 fire FOAM -flammable liquids,oils,etc DRY CHEMICAL/ABC POWDER -all type of fire CO2 -electrical fires & flammable liquids
  5. 5. • Water in pressurized cylinders may be used for carbonaceous fires and these are commonly deployed in offices, schools, hotels, etc. • Although water is a very good cooling agent, it is inappropriate for some types of fire. • It is immiscible with oils and is a conductor of electricity. WATER -PAPER,WOODS&CO2 FIRE
  6. 6. • Foam is formed by chemical reaction between sodium bicarbonate and aluminium sulphate dissolved in water in the presence of a foaming agent. • When the extinguisher is inverted the chemicals are mixed to create foam under pressure which is forced out of the nozzle. • Frozen if placed in a cool place. FOAM FLAMMABLE LIQUIDS,OILS,ETC
  7. 7. • carbon dioxide is pressurised as a liquid inside a cylinder • Does not impinge/colourless/odourless • Disadvantages : - Not refillable - Unreasonable weighing CO2 -ELECTRICAL FIRES & FLAMMABLE LIQUIDS
  8. 8. • Act more effectively than others • BUT , just use Once DRY CHEMICAL / DRY POWDER -ALL TYPE OF FIRE
  9. 9. USING THE FIRE EXTINGUISHER Pull the pin Aim nozel to the fire Squeeze the trigger Sweep nozel to left and right
  10. 10. FIRE BLANKET • They exclude oxygen from the fire • Effective against small fire • Widely used in kitchens and welding stops • Asbestos blanket cause no damage or contamination
  12. 12. DRY RISER & WET RISER SYSTEM DRY RISER WET RISER DEFINITION System equipped with valves & plumbing that facilitates Fire Brigade pump water to the upper floors. System equipped with valves and pipes that have a fixed water charges COMPONENTS -Landing valve -Main inlet connection -duty/standby pump -hose reel -jockey pump APPLICATION Height > 30.5m Height < 30.5m OTHERS -Pipe is always empty -located where users are least likely to be endangered by the fire Internal hydrant and water is always in charge.
  13. 13. FIRE HYDRANT • Device located outside the building either intersection of two streets or two mid way • It is a fire extinguisher aids manufacture / distribute water from the tap
  14. 14. SPRINKLER SYSTEM • Water sprinklers provide an automatic spray dedicated to the area of fire outbreak • Sprinkler heads have temperature sensitive elements that respond immediately to heat • A rapid response which reduces and isolates fire damage, sprinklers use less water to control a fire than the firefighting service, therefore preventing further damage from excess water.
  15. 15. SPRINKLER SYSTEM INSTALLATION CRITERIA 1- Pipe materials - Copper tube (BS EN 1057) - Post-chlorinated polyvinylchloride (CPVC) 2- System -mains supplied, wet. 3- Pipe sizes - 25 mm minimum 4- Sprinkler head spacing - area covered by one head, maximum 12 m2 . 5- Maximum distance between heads 4 m. 6- Maximum distance from wall to ceiling mounted head 2 m. 7- Operating pressure - Minimum 0.5 bar (50 kPa).
  16. 16. FIRE ALARM SYSTEM • In addition to, or as an alternative to, automatic smoke or fire sensing switches, manual break-glass alarm switches can be wall mounted at about 1.5 m above floor level in lobbies, corridors and other common access locations. • No person should have to travel more than 30 m to use an alarm • System control unit is an alarm panel which monitors the state of all parts (zones) of the installation. It identifies the point of origin of an alarm, displays this on the panel and communicates this to remote control locations.
  17. 17. DISCUSSION 1 Find what is SMOKE & HEAT DETECTORS and How It Works? Duration : 45 minutes
  18. 18. ASSIGNMENT 1 Do a personal visit to IFSEC Southeast Asia 2013 that will be held on 11-13 September 2013 at Kuala Lumpur Convention Centre. Task : 1. Choose at least three type of different Fire Fighting System. 2. Ask the exhibitors How they work ?/What are their specialty ?/ How much the cost ? 3. Write a report regarding the information that you get from the exhibition. Report’s Requirements : 1. Attach the entry passes as evidence that you had been to the exhibition. 2. Make all the brouchers or templates as References DEADLINE : 27 SEPTEMBER 2013 (FRIDAY BEFORE 12 NOON) THIS IS AN INDIVIDUAL ASSIGNMENT