VENTILATION
description
Transcript of VENTILATION
![Page 1: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/1.jpg)
VENTILATIONNFPA Standard 1001
Fire Fighter Professional Qualifications - 2002
![Page 2: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/2.jpg)
ObjectivesUnderstand ventilation as a
fire service toolKnow the principles,
advantages, and effects of ventilation (NFPA 1001:3-3.10a)
![Page 3: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/3.jpg)
Objectives Identify the considerations for
proper ventilation (NFPA 1001:3-3.10a)
Identify the types of ventilation (NFPA 1001:3-3.10a, 4-3.2a)
Describe ventilation techniques (NFPA 1001:3-3.10a, 3-3.11a, 3-3.11b)
![Page 4: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/4.jpg)
ObjectivesDescribe the need for roof
ventilation (NFPA 1001:3-3.11a, 3-3.11b,4-3.2a)
Identify safety considerations when venting (NFPA 1001:3-3.10a)
![Page 5: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/5.jpg)
ObjectivesDescribe the obstacles to
ventilation (NFPA 1001:4-3.2a)
Identify the factors affecting ventilation
Delmar, Firefighter’s Handbook, Chapter 18
![Page 6: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/6.jpg)
Principles, Advantages, and Effects of VentilationVentilation is the systematic removal of
the byproducts of combustion.
It relieves the structure of heat. It channels smoke out of the structure. It removes toxic gases from the
structure.
![Page 7: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/7.jpg)
Considerations for Proper Ventilation
Vertical ventilation is the removal of heat and smoke through vertical channels.
Horizontal ventilation is the removal of smoke and gases through horizontal openings.
![Page 8: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/8.jpg)
Types of Ventilation
Natural Opening of doors and windows Cutting a hole in the roof
![Page 9: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/9.jpg)
![Page 10: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/10.jpg)
Types of VentilationMechanical Heating, ventilation, and air conditioning
(HVAC) Smoke fans Positive pressure
![Page 11: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/11.jpg)
![Page 12: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/12.jpg)
Types of VentilationHydraulic Fog stream out a window or other
opening Smooth bore with partially opened
nozzle out a window or other opening
![Page 13: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/13.jpg)
![Page 14: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/14.jpg)
Ventilation TechniquesBreak windowsOpen doorsRope and a tool
For ventilating upper floor windows from above
Hook or pike poleHalliganAxe
![Page 15: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/15.jpg)
Ventilation TechniquesPortable ladderAerial ladder tipNegative pressure ventilationPositive pressure ventilation
Introduction opening should be larger than exhaust openingCone of air should be larger than opening
![Page 16: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/16.jpg)
![Page 17: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/17.jpg)
Roof VentilationQuickest way is to use building features
SkylightScuttle coverBulkhead door
When making holes, cut directly over the fire when possible
![Page 18: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/18.jpg)
![Page 19: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/19.jpg)
Roof VentilationTypes of cuts
Expandable cutProduces hole as large as needed
![Page 20: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/20.jpg)
Roof VentilationLouver cut
A series of cuts parallel to the roof joists, keeping them in the middle. When opened, they look like hinged louvers
Triangular cutGood for Q-decking over open web bar
joists
![Page 21: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/21.jpg)
![Page 22: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/22.jpg)
Roof VentilationTrench cut or Strip cut
Defensive in design and executionUsed to cut off fire extension
Examination holesKerf cut – cutting blade lowered
into roof material and pulled outTriangular cut – three intersecting kerf cuts
![Page 23: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/23.jpg)
Safety Considerations Will ventilation permit fire to
extend? Will the escape route be cut off? Will ventilation endanger
others? Work in teams
![Page 24: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/24.jpg)
Obstacles to Ventilation
AccessSecurity devicesHeightUnfamiliar building layoutTiming
![Page 25: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/25.jpg)
Factors Affecting Ventilation
Partial openingsPartially broken windowsScreensRoof material
![Page 26: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/26.jpg)
Factors Affecting Ventilation
Dropped or hanging ceilingsBuilding sizeWeatherOpening windows
![Page 27: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/27.jpg)
Lessons Learned
Ventilation is a tool that is to be used like any other tool. It must be understood, used to its advantage, and applied carefully.
![Page 28: VENTILATION](https://reader036.fdocuments.us/reader036/viewer/2022062501/56816265550346895dd2ca9b/html5/thumbnails/28.jpg)
The End