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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


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