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Fire safety

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Fire Codes,Fire Extinguishers,Fire Alarm Systems,Fire Suppression,Fire Construction & Containment

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Fire safety

  1. 1. Overview  Awareness of Fire Hazards  Fire Safety Systems ○ Fire Codes ○ Fire Extinguishers ○ Fire Alarms ○ Fire Suppression ○ Fire Construction and Containment 5/9/2016 Saurabh Tiwari 2
  2. 2. Group Exercise What are some fire hazards that you may encounter in your facilities? 5/9/2016 Saurabh Tiwari 3
  3. 3. Overview  Fire Codes  Fire Extinguishers  Fire Alarm Systems  Fire Suppression  Fire Construction & Containment 5/9/2016 Saurabh Tiwari 4
  4. 4. Fire Codes  National Fire Protection Association (NFPA) 5/9/2016 Saurabh Tiwari 5
  5. 5. National Fire Protection Association (NFPA)  NFPA 13 – Fire Sprinklers  System requirements & installation  Water supplies  System inspection, testing, & maintenance  NFPA 72 – Fire Alarms  System design requirements  Inspection, testing, & maintenance 5/9/2016 Saurabh Tiwari 6
  6. 6. Authority Having Jurisdiction (AHJ) Enforcement Regulations Community Colleges Division of State Architect (DSA) State Fire Marshal (SFM) State Universities SFM SFM UCs Designated Campus Fire Marshal (DCFM) SFM Private Universities Local Fire Agency Local Fire Agency/SFM 5/9/2016 Saurabh Tiwari 7
  7. 7. Fire Code Questions? 5/9/2016 Saurabh Tiwari 8
  8. 8. Overview  Fire Codes  Fire Extinguishers  Fire Alarm Systems  Fire Suppression  Fire Construction & Containment 5/9/2016 Saurabh Tiwari 9
  9. 9. Fire Extinguishers  Elements of all fires 5/9/2016 Saurabh Tiwari 10
  10. 10. Fire Extinguisher Classifications  Classifications:  Class A - Ordinary Combustibles ○ Paper, cloth, wood, and some Plastics  Class B - Flammable Liquids or Gasses ○ Liquids: Gasoline, Oil, Grease, Solvents ○ Gases: Acetylene, Methane, Hydrogen  Class C - Energized Electrical Equipment ○ Equipment Connected to Electrical Source 5/9/2016 Saurabh Tiwari 11
  11. 11. Extinguisher Ratings  Sample extinguisher UL listing 4-A:20-B:C ○ Good for Class A, B, and C fires ○ Will extinguish twice as much Class A fire as a 2-A rated extinguisher ○ Will extinguish 20 times as much Class B fire as a 1-B rated extinguisher ○ Suitable for Class C fires 5/9/2016 Saurabh Tiwari 12
  12. 12. Use of Fire Extinguisher P - Pull the Pin A - Aim at Base of Fire S - Squeeze the Trigger S - Sweep from Side to Side 5/9/2016 Saurabh Tiwari 13
  13. 13. Inspect Fire Extinguisher  Is this fire extinguisher ready to be used?  Locking pin and security seal  Pressure gauge  State Fire Marshal tag 5/9/2016 Saurabh Tiwari 14
  14. 14. Fire Extinguisher Questions? 5/9/2016 Saurabh Tiwari 15
  15. 15. Overview  Fire Codes  Fire Extinguishers  Fire Alarm Systems  Fire Suppression  Fire Construction & Containment 5/9/2016 Saurabh Tiwari 16
  16. 16. Fire Alarm Systems  System Selection based on:  Building occupant safety  Satisfy building codes or AHJ requirements  Property protection  First responder safety  Environmental protection  Combination of above 5/9/2016 Saurabh Tiwari 17
  17. 17. Fire Detection  Spark/Ember Detectors  Flame Detectors  Combination  Radiant Energy  UV  IR  Smoke Detector  Ionization  Photoelectric  Heat Detectors  Fixed Temperature  Rate-of-Rise 5/9/2016 Saurabh Tiwari 18
  18. 18. Manual Pull Stations  Usually located near exit on wall  Sends signal to fire alarm system which in turn places the building into alarm 5/9/2016 Saurabh Tiwari 19
  19. 19. Notification Appliances  Audible alarms  Horns  Bells  Chimes  Visual alarms  Voice Communication  Assembly occupancies  High rises 5/9/2016 Saurabh Tiwari 20
  20. 20. Fire Alarm Questions? 5/9/2016 Saurabh Tiwari 21
  21. 21. Overview  Fire Codes  Fire Extinguishers  Fire Alarm Systems  Fire Suppression  Fire Construction & Containment 5/9/2016 Saurabh Tiwari 22
  22. 22. Fire Suppression Systems  4 categories of sprinkler systems  Wet-Pipe  Dry-Pipe  Preaction  Deluge 5/9/2016 Saurabh Tiwari 23
  23. 23. Wet-Pipe System (Sprinklers)  System contains water under pressure at all times  Series of closed sprinkler heads  Heat activates sprinkler head  Water discharged immediately from sprinkler head 5/9/2016 Saurabh Tiwari 24
  24. 24. How do Wet-Pipe Systems/Sprinklers Work? 5/9/2016 Sprinkler head As temperature rises the bulb will shatter Water is released and deflected in a spray pattern Saurabh Tiwari 25
  25. 25. Dry-Pipe System  System contains air under pressure  Compressor on system keeps pressure up  Sprinkler heads hold the pressure  Valve holds back water supply  Valve opens when pressure falls below a predetermined level in the pipes  Heat activates sprinkler head  Water discharged immediately from sprinkler head 5/9/2016 Saurabh Tiwari 26
  26. 26. How do Dry-Pipe Systems Work? 1. Heat Activated, sprinklers head opens 5/9/2016 2. Pressure Drop 3. Valve Opens 4. Water sent to all sprinkler heads 5. Water Discharges from activated head Saurabh Tiwari 27
  27. 27. Preaction System  System contains air under pressure  Compressor on system keeps pressure up  Water held back by preaction valve  Supplemental detection  Operation of detection system allows preaction valve to open and water fills system  Water not discharged until fire has generated sufficient heat to activate a sprinkler head 5/9/2016 Saurabh Tiwari 28
  28. 28. How do Pre-Action Systems Work? 1. Smoke Activated, opens primer in valve 5/9/2016 2. Pressure Drop 3. Valve Opens 4. Water sent to all sprinkler heads 5. Water Discharges from activated head Saurabh Tiwari 29
  29. 29. Deluge Systems  Deliver large quantities of water over a specified area in a short period of time  Piping at atmospheric pressure  Sprinkler heads are in open position  Deluge valve keeps water back  Supplemental detection activated deluge valve  Water discharged from all heads immediately 5/9/2016 Saurabh Tiwari 30
  30. 30. Sprinkler Flow Alarms  Switches to detect water flow  Fire alarm system activated when water flow detected 5/9/2016 Saurabh Tiwari 31
  31. 31. Fire Pumps  Used when hydraulic demand exceeds public supply capacity  Components  Pump and motor  Controllers (fire pump and jockey pump)  Jockey pump  Water tank 5/9/2016 Saurabh Tiwari 32
  32. 32. Water Supply  Standpipe System  Class I – Intended for Fire Department use  Class II – Intended for trained occupants  Class III – Provided with 2 ½ inch and 1 ½ inch hose connections  Fire Department Connection 5/9/2016 Saurabh Tiwari 33
  33. 33. Overview  Fire Codes  Fire Extinguishers  Fire Alarm Systems  Fire Suppression  Fire Construction & Containment 5/9/2016 Saurabh Tiwari 34
  34. 34. Construction and Containment  Buildings classified by 9 levels of fire resistant materials (e.g. walls, roofs, columns) High level – Type I (High Rise) Low Level – Type V Non-Rated (Homes) 5/9/2016 Saurabh Tiwari 35
  35. 35. Examples of Construction & Containment 5/9/2016  Closing fire doors  Fire penetrations around pipes in rated walls  Fire/Smoke dampers Saurabh Tiwari 36
  36. 36. Know Your Building  Become familiar with:  Locations of sprinklers and standpipe  Location of fire alarm devices  Locations of exits and egress  Emergency evacuation routes  Do you have emergency power – where located? 5/9/2016 Saurabh Tiwari 37
  37. 37. Fire Construction & Containment Questions? 5/9/2016 Saurabh Tiwari 38
  38. 38. Conclusions  Codes drive facility fire and life safety requirements  Know what codes apply to your operation  Find out who is your AHJ  Maintain fire and life safety systems at all times  Always report non-operational fire systems to your appropriate department  Be aware of fire hazards – report as appropriate 5/9/2016 Saurabh Tiwari 39

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