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VENTILATION TRAINING. OBJECTIVES PRINCIPLES OF VENTILATION ADVANTAGES/DISADVANTAGES FOR TYPES OF VENTILATION TERMS AND METHODS SAFETY OPERATIONS. VENTILATION. Define Ventilation The systematic removal of and replacement of heated air, smoke, and gases within a structure with cooler air.

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ventilation training
VENTILATION TRAINING
  • OBJECTIVES
  • PRINCIPLES OF VENTILATION
  • ADVANTAGES/DISADVANTAGES FOR TYPES OF VENTILATION
  • TERMS AND METHODS
  • SAFETY
  • OPERATIONS
ventilation
VENTILATION
  • Define Ventilation
  • The systematic removal of and replacement of heated air, smoke, and gases within a structure with cooler air.
advantages of ventilation
ADVANTAGES OF VENTILATION
  • RESCUE OPERATIONS
  • Fresh air for victims to breath
  • Improved visibility for rescuers
  • Safety of operations enhanced
fire attack and extinguishment
Fire Attack and Extinguishment
  • Channeling of smoke and gas reduces spread of fire
  • Reduces risk of steam burns
  • Improves visibility
  • Reduces smoke damage
property conservation
Property Conservation
  • Reduces water, heat and smoke damage
  • Prevents “mushrooming” fire spread
  • Confines fire to area of origin
hazardous conditions
Hazardous Conditions
  • FLASHOVER
    • ROOM IS HEATED TO IGNITION TEMPERATURE OF COMBUSTIBLES WITHIN
    • VENTILATION DOES NOT ALLOW FOR TEMPERATURE BUILDUP
backdraft
BACKDRAFT
  • Sufficient heat has raised material to ignition temperature but insufficient oxygen is present to produce fire.
  • Explosive potential and danger present
  • Warning signs
    • smoke stained windows, smoke puffing
    • black smoke turning dense gray/yellow
    • small flames visible on exterior/excessive heat
questions regarding ventilation
Questions regarding Ventilation
  • Is there a need to ventilate?
  • Where should I ventilate?
  • What type of ventilation should I use?
  • Is the structure safe for roof operations?
considerations
CONSIDERATIONS
  • LIFE SAFETY
  • VISIBLE SMOKE
  • BUILDING INVOLVED
  • LOCATION AND EXTENT OF FIRE
  • SELECTION OF LOCATION TO VENTILATE
don ts of ventilation
DON’TS OF VENTILATION
  • DON’T MAKE LOTS OF SMALL VENTS
  • DON’T MAKE ADDITIONAL DAMAGE
  • DON’T VENT WITHOUT ATTACK LINES IN PLACE!!
  • DON’T FORGET FIREFIGHTER SAFETY!
safety precautions
SAFETY PRECAUTIONS
  • UTILIZE PREFIRES FOR ROOF CONSTRUCTION
  • ROOF LADDERS ON PITCHED ROOFS
  • WIND DIRECTION (AT YOUR BACK)
  • DUE CARE NOT TO CUT STRUCTURAL SUPPORTS
  • BE AWARE OF OVERHEAD WIRING
  • START POWER TOOLS ON GROUND
safety
SAFETY
  • BE AWARE OF WARNING SIGNS OF UNSAFE ROOF CONDITIONS
    • MELTING ASPHALT
    • SPONGY ROOF
    • SMOKE FROM ROOF
    • FIRE FROM ROOF
safety1
Safety
  • Two means of egress off the roof should be provided for roof operations.
  • They should be well apart from each other but close to the work area.
yes more safety rules
YES MORE SAFETY RULES
  • PROPER PPE INCLUDES USING SCBA
  • TEAM WORK ALWAYS MINIMUM 2
  • ANGLE OF CUT NOT TOWARD YOUR BODY
  • CHECK ROOF INTEGRITY WITH TOOL NOT BODY
  • LADDERS EXTEND 5 RUNGS ABOVE ROOF LINE, AND SECURE.
  • HOSE LINE & SECONDARY EGRESS
vertical ventilation
VERTICAL VENTILATION
  • CONSIDER TYPE OF BUILDING
  • ROOF CONSTRUCTION
  • LOCATION, DURATION, EXTENSION OF FIRE
  • SAFETY PRECAUTIONS
  • ESCAPE ROUTES
  • MANPOWER, EQUIPMENT, LOCATION
equipment
Equipment
  • Describe purpose and use of each item and list an alternate use or tool.
preparation
Preparation
  • All equipment available
  • Power equipment started
  • Straps and ropes available to carry and or lift equipment
initial actions
Initial Actions
  • “Sound” the roof
  • Equipment vs Foot
  • Ongoing endeavor on all roofs.
  • Notice FF on air. Why carry 40 lbs on your back if you do not use it.
inspection cut
INSPECTION CUT
  • Keep away from travel area
  • Cut large enough to learn roof layout
  • Do not cut through support members
kerf cut
KERF CUT
  • Safety on larger roofs
  • Firefighter awareness of conditions
  • Egress considerations
opening a flat roof
Opening a Flat Roof
  • Locate using ventilation factors
  • Locate roof supports by sounding
  • Mark by scratching outline with axe
  • Pry up or lever with axe
  • Push tool thru opening to open ceiling below

D

C

B

A

opening a pitched roof
Opening a Pitched Roof
  • Sound roof to find support members (hollow & bounce between rafters)
  • Cut furthest along rafter first
  • Wind at your back
  • Use rubbish hook or pike pole to open ceiling

B

D

A

C

horizontal ventilation
Horizontal Ventilation
  • ADVANTAGES
    • FF Safety
    • Aids natural ventilation
    • Speeds removal of contaminants
    • Reduces smoke damage
    • Promotes good PR
horizontal ventilation1
Horizontal Ventilation
  • Disadvantages
    • Fresh air in volume can intensify fire
    • Requires special equipment (Power fans)
    • Carbon Monoxide levels may increase
    • Hidden fires may extend
    • Depends on power source (electrical fans)
type of ventilation
Type of Ventilation
  • What type of ventilation?
  • Method?
  • When would you utilize?
type of ventilation1
Type of Ventilation
  • What type of ventilation?
  • Method?
  • When would you use?
  • What is missing from the picture? (Waldo)
type of ventilation2
Type of Ventilation
  • What type of Ventilation?
  • What method?
  • When would you utilize?
larger ventilation scenarios
Larger Ventilation Scenarios
  • Positive pressure
  • Proper channeling of smoke and gases
  • Anything wrong in this picture?
fan placement
Fan Placement
  • The fan should be placed at a low point and in the direction of fire attack.
  • The exit point of smoke and gas should always be accounted for.
review
REVIEW
  • PRINCIPLES/PURPOSE OF VENTILATION
  • ADVANTAGES AND DISADVANTAGES OF TYPES OF VENTILATION
  • SAFETY CONCERNS
  • OPERATIONAL PROCEDURES
ad