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7/2/2015Dixon High School Fire Department1 The Recruit will also practice and master certain skills and will be tested on these skills. At the end of each.

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Presentation on theme: "7/2/2015Dixon High School Fire Department1 The Recruit will also practice and master certain skills and will be tested on these skills. At the end of each."— Presentation transcript:

1 7/2/2015Dixon High School Fire Department1 The Recruit will also practice and master certain skills and will be tested on these skills. At the end of each subject there will be a quiz over the material that was taught. The firefighter is responsible for studying the material and practicing the skills. Introduction

2 7/2/2015Dixon High School Fire Department2 Ventilation References IFSTA Essentials of Fire Fighting Fifth Edition IFSTA Essentials of Fire Fighting Fifth Edition Fire Fighter I & II Presentations

3 7/2/2015Dixon High School Fire Department3 Ventilation The systematic removal and replacement of heated air, smoke, and gasses from a structure with cooler air.

4 7/2/2015Dixon High School Fire Department4 Ventilation From the earliest time, man has recognized that heated air, gases, and smoke rise.

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6 7/2/2015Dixon High School Fire Department6 Ventilation Types of Ventilation Vertical ventilation Horizontal Ventilation Forced Ventilation –Mechanical Positive-Pressure –Mechanical Negative-Pressure –Hydraulic Built-In Ventilation Systems

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13 7/2/2015Dixon High School Fire Department13 Ventilation Advantages an effects of ventilation. Rescue Operations Fire Attack Property Conservation Fire Spread Reduction of Flashover Potential Reduction of Backdraft Potential

14 7/2/2015Dixon High School Fire Department14 Ventilation Saving Lives –Aiding rescue operations –Reducing Flashover Potential –Reducing Backdraft Potential Suppressing Fire –aiding attack and extinguishment –Controlling fire spread Reducing Damage –Enabling property conservation

15 7/2/2015Dixon High School Fire Department15 Ventilation Effects Defiantly visibility Cooler Air Fresh Air Control of the Fire

16 7/2/2015Dixon High School Fire Department16 Ventilation Dangers & Precautions

17 7/2/2015Dixon High School Fire Department17 Ventilation Backdraft When sufficient heat is confined in an area, the temperature of combustible materials rise to their ignition points. These materials will not ignite. However, unless sufficient oxygen is available to support combustion. In this situation, a very dangerous condition exists because the admittance of an air supply is all that is needed to explosively change the superheated area into an instant inferno.

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19 7/2/2015Dixon High School Fire Department19 Ventilation The primary type of ventilation to prevent a backdraft is vertical ventilation.

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22 7/2/2015Dixon High School Fire Department22 Ventilation What life safety hazards are likely to be found in an unventilated burning structure in which smoke and gases have accumulated? Obscurity caused by dense smoke Presence of toxic gases Lack of oxygen Presence of flammable gases

23 7/2/2015Dixon High School Fire Department23 Ventilation Danger of Backdraft Danger of Flahover and Rollover

24 7/2/2015Dixon High School Fire Department24 Ventilation What building factors aid the firefighter in determining whether to use horizontal or vertical ventilation? Building type and design Number and size of wall openings Number of stories

25 7/2/2015Dixon High School Fire Department25 Ventilation Number of staircases, shafts, dumbwaiters, ducts, roof openings Availability of exterior fire escape Exposure involvement.

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28 7/2/2015Dixon High School Fire Department28 Ventilation Problems with windowless buildings. –Adversely affect fire fighting and ventilation ops. –Ventilation may by delayed, allowing the fire to gain headway or to create backdraft conditions. –Usually require mechanical ventilation for smoke removal. –May be able to use mechanical ventilation and built-in ventilation systems.

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30 7/2/2015Dixon High School Fire Department30 Ventilation That completes the self study portion of the class. Now you, the student, will watch the video Essentials of Firefighting Ventilation located in the 2 nd top draw on the right side of the T.V. in the Dayroom. After the video come back to the computer and take the quiz.

31 7/2/2015Dixon High School Fire Department31 Ventilation Quiz

32 7/2/2015Dixon High School Fire Department32 Quiz 1. The systematic removal and replacement of heated air, smoke, and gasses from a structure with cooler air is the definition of A. Ventilation B. Wind C. Smoke column D. None of the above

33 7/2/2015Dixon High School Fire Department33 Quiz 2. Which of the following is not a type of ventilation? A. Vertical B. Force C. Built in D. Geographical

34 7/2/2015Dixon High School Fire Department34 Quiz 3. The primary type of ventilation to prevent a backdraft is A. Geographical B. Natural C. Vertical D. None of the above

35 7/2/2015Dixon High School Fire Department35 Quiz 4. When performing Hydraulic Forced Ventilation how much of the window opening should be covered? A. 25-30% B. 85-90% C. 100% D. None of the above

36 7/2/2015Dixon High School Fire Department36 Quiz 5. When sufficient heat is confined in an area, the temperature of combustible materials rise to their ignition points. These materials will not ignite. However, unless sufficient oxygen is available to support combustion. In this situation, a very dangerous condition exists because the admittance of an air supply is all that is needed to explosively change the superheated area into an instant inferno is the definition of A. Backdraft B. Flashover

37 7/2/2015Dixon High School Fire Department37 Quiz 6. Which of the following is not an advantage of effective ventilation? A. Reduce potential of Backdraft B. Rescue operations C. Make a pretty hole D. None of the above

38 7/2/2015Dixon High School Fire Department38 Quiz 7. What size should the hole in roof at least be in vertical ventilation? A. 4’x4’ B. 6’x6’ C. 10’x10’ D. None of the above

39 7/2/2015Dixon High School Fire Department39 Quiz 8. Puffing smoke, hot unbroken glass, and hot walls are signs of what? A. Flashover B. Backdraft C. Curling iron was left on D. None of the above

40 7/2/2015Dixon High School Fire Department40 Quiz 9. When looking at building factors for ventilation what should you look for? A. Color of building B. Location of out houses C. Number of stories D. None of the above

41 7/2/2015Dixon High School Fire Department41 Quiz 10. Using a electrical fan to suck smoke from a structure is called what? A. Positive Pressure Ventilation B. Sucking smoke ventilation C. Fan Ventilation D. None of the above

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