ch 17 & 18 ventilation and forcible entry

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ch 17 & 18 ventilation and forcible entry
2012-10-07 22:52:30
FF academy

ch 17 and 18 vent. and forcible entry
Show Answers:

  1. How to carry an axe
    carry the axe with the blade away from the body and the pick head covered or in its scabbard. Never over your shoulder.
  2. Mortise Lock
    • usually found in commercial occupancies
    • three types of operating latches
    • Key turns a cam which moves the latching device and opens the lock.
  3. How to break tempered glass
    FF should strike the glass with a sharp blow with a pointed tool like the pike of a halligan in a lower corner
  4. K tool
    • used to perform thru the lock forcible entry
    • pulls lock cylinder out to expose lock mechanism
    • back K part slides over lock and front has a loop for adz of a halligan
  5. halligan and it's three parts
    • designed by hugh halligan of FDNY
    • most important single tool for forcible entry
    • 30 inch forged steel
    • adz, pike, fork
    • married with flat head axe to form irons
  6. What are abrasive discs made of?
    • Carbide tipped- wood and roofing materials 12-24 teeth, light metals and plastic can be cut with these as well, maintain full rpms when cutting with this blade
    • Aluminum oxide abrasive disc- cutting metals, locks, doors, roll down gates, other forcible entry ops.
    • Silicon carbide or steel diamond matrix- masonry materials like concrete, brick, blocks and stone
  7. Two types of glass doors
    metal/tubular frame and tempered frameless glass door
  8. Conventional Forcible Entry
    • uses levaerage, force, and impact
    • uses irons
  9. laminated glass
    • aka safety glass
    • two or more sheets of glass with a plastic sheet between them to hold glass together if it is broken
    • most common in automobile windows
  10. Building construction related to breaching walls
    • wood frame construction with lath and plaster or drywall are usually easy to breach
    • concrete and brick buildings are more difficult and require more effort
  11. Power saw and how they are used
    • most common cutting tool for forcible entry
    • two types: rotary with circular blade and chain saw
    • powered by two cycle gasoline engine
    • used for removing doors and gates
  12. Two types of roll down doors
    sectional rolling steel doors and continuos steel doors
  13. Kelly Tool
    • steel bar 28 inches long has a 3 in. large adz end and a forked end
    • older tool replaced by the halligan
  14. Hook
    • pike pole, assorted lengths
    • used to take out glass from a safe distance
    • can extend FF reach to close a door
    • used for prying and removing roof material
  15. Signs of backdraft
    • smoke stained windows
    • puffing smoke at seams, cracks, and windows
    • smoke pushing out under pressure
    • no visible flame or dull red flame
    • heavy black smoke
    • large open area structure or large voids
    • extreme heat
  16. Smoke Explosion
    unburned products of smoke and gases accumulate and when O2 is introduced the gases rapidly ignite with explosive force
  17. Obstacles that can impede ventilation
    • access
    • security devices
    • height of building
    • planning 
    • lack of personnel
    • confusing floor layout
  18. Hydrogen Cyanide
    highly toxic, used commercially as vermin fumigant
  19. Carbon dioxide
    overstimulates breathing rate
  20. during combustion process energy is released in...
    an exothermic reaction as heat and light
  21. Spray stream setting when venting a window
    should be between 30-60 degree angle filling 90% of the window opening without touching it
  22. Diffusion
    naturally occuring event in which molecules travel from levels of high concentration to areas of low concentration
  23. When ventilation may be performed?
    • When buildings have protection system using chemicals like Halon
    • venting lets halon out of fire room and could allow rekindle
  24. Hydraulic ventilation
    • mechanical mode of venting
    • water is employed to create air movement
  25. Strip cut
    • aka trench cut
    • defensive tactic
    • roof opening that ventilates attic or cockloft
    • when performed, the building on fire side of strip is deemed unsavable
  26. PPV and how it is created
    • Positive Pressure Ventilation
    • compartment is positively charged with air thru a PPV fan and the heat and smoke are dispacedthru chosen avenues to the exteriors
  27. Types of fans for venting
    ejector and PPV
  28. Venting and tactical functions....
    venting can better conditions for crews inside to work and/or search
  29. It is logical to assume that a tool that is too          cannot be moved fast enough to develop proper striking force.
  30. Power hydraulic spreaders can be used for            in certain circumstances
    forcible entry
  31. It is a good idea to                all forcible entry operations with the fire attack and ventilation.
  32. halligan is what type of tool
  33. Which tool is used to cut metal bars, wires, and other hardware
    bolt cutters
  34. One of the first operations conducted before anything else at building fires is ____.
    conduct forcible entry
  35. The best tool to use for positive pressure ventilation is a ____.
  36. Trench ventilation is sometimes referred to as ____ventilation.
  37. To be most effective, trench ventilation operations must be completed before ____
    fire reaches the trench
  38. After opening a roof, it is often necessary to ____.
    open the roof underneath
  39. When breaking a glass window with an ax, the firefighter should use the
    flat part of the axe
  40. A firefighter who is opening windows and doors in a structure to allow for smoke and heat to escape is performing ____ ventilation.