Ventilation

Question 1

What is the purpose of ventilation?

Answer 1

Establish a coordinated, systematic approach to remove smoke, heat, and fire gases from buildings.

Question 2

What does coordinated ventilation accomplish?

Answer 2

Increases survivability and increases safety, speed, and efficiency for interior fire crews.

Question 3

Ventilation must be ____ with fire attack?

Answer 3

Coordinated

Question 4

What are the five principles of Ventilation?

Answer 4

1) All ventilation must be coordinated
2) Ventilation supports fire control and primary search
3) Ventilation without supression will increase fire intensity
4) Opening a door or window must be thought of as ventilation
5) Coordinated ventilation with water application creates survivable space by lifting heat, smoke, and steam.

Question 5

What should be considered when determining where, how, and when to ventilate?

Answer 5

Ventilation for Suppression
Ventilation for Search

Question 6

What is the most efficient type of ventilation?

Answer 6

Vertical Ventilation

Question 7

What size of vertical ventilation hole should be cut on a residential vs. commercial occupancy?

Answer 7

Residential: 4 x 4
Commercial 4 x 8

Question 8

A 4 x 4 roof vent hole is equivalent to how many residential windows?

Answer 8

3

Question 9

List the 5 variables that may contraindicate vertical ventilation.

Answer 9

1) Building Construction
2) Fire Conditions
3) Resources available
4) Weather
5) The crew’s ability to safely complete the task in a timely manner.

Question 10

What changes should be reported to command?

Answer 10

Changi n flow path, volume of fire, autoexposure, or rapid fire spread.

Question 11

How much CFM can battery operated fans move?

Answer 11

10,000 cfm

Question 12

What MPH of exterior building wind can overpower a fan?

Answer 12

10-15 mpg

Question 13

Every how many floors should a fan be placed for PPV?

Answer 13

Every 10 floors

Question 14

Standard 1 3/4 line with 15/16 smooth bore nozzle can move ___ cfm if stationary vs. ___ if rotated?

Answer 14

700 cfm
5000 cfm

Question 15

Standard 1 3/4 line with fog nozzle can move upwards of ____ cfm?

Answer 15

7000 cfm with fog pattern

Question 16

The fire burns ____ in proportion to the quantity of air which it receives.

Answer 16

Exactly

Question 17

What does AHU stand for?

Answer 17

Air Handling Unit

Question 18

Every ___ floors will there commonly be AHUs?

Answer 18

3-10 floors

Question 19

____ ____ of smoke pushing out through the shingles is a concrete sign that the decking is compromised.

Answer 19

White “pencils”

Question 20

____ is a greater danger than fire in high rise fires?

Answer 20

Smoke

Question 21

In what order should atmosphere in a high rise fire be controlled?

Answer 21

1) Control stairwell atmosphere
2) Control atmosphere in public hallways and/or fire floor
3) Control atmosphere in the fire occupancy or area

Question 22

What is considered minimum for roof investigation on commercial occupancy?

Answer 22

4 person crew

Question 23

How is inspection cut indicated by the lead hook?

Answer 23

Tines up with trash hook, tracing the angle cut.

Question 24

How is a smoke hole indicated by the lead hook?

Answer 24

D handle tapping center of smoke hole.

Question 25

What is the SKIRTS acronym used for, and what does it stand for.

Answer 25

Skirts is used to determine the location of ventilation opening. S- Sounding K- Known Location I-Interior Crews R- Roof Division T- Thermal Imager S- Smoke Indicator Holes

Question 26

What are indicators of interior conditions when it comes to smoke?

Answer 26

Location, volume, velocity, density, and color.