AUC 349 Smoke Control Using PPF

Question 0

When using the PPF s at a high rise fire what should be given first consideration for pressurization

Answer 0

The attack stairwell is the first consideration as ordered by IC

Question 1

What tools Ventiation support group report to ICP WITH?

Answer 1

Two 27 inch PPF with exhaust hoses
Eye and ear protection
Dave Clark headset
HT
CO monitor
Elevator keys 
Halligen and Heavy axe
Door chocks 
Hand lights 
SCBA and full PPE

Question 2

Proper placement of PPFS IS based on what factors

Answer 2

1. Number of PPFS
2. Personnel available
   3 location of fire
   4 number floors in building
   5 stage of FF ops

Question 3

What should be done if negative results are encountered when using PPFS

Answer 3

1. Discontinue pressurization by throttling down fans to idle
2. Close doors to the stairwell that fan is pressuring
3. Notify IC when fans are deactivated and doors secured

Question 4

What is the priority use for PPFS

Answer 4

1. Pressurization of attack stair to support fire attack by controlling smoke condition at attack stair doorway and throughout the attack stairway
2. pressurizing the evacuation stairwell for smoke and CO control
3. Ventilating the public hallways for smoke and CO CONTROL

Question 5

What is the optimum placement of the PPF

Answer 5

1. 4-6 from attack stairway door on the ground floor directly facing the door to the stairwell angle tilt of 80 degrees

Question 6

True or false you should place the fan in the stairwell thAt you are trying to pressurize?

Answer 6

False. Fan should placed to blow fresh air into the stairwell

Question 7

The pressurization of attack stair will allow up to how many doors to be open and still be effective.?

Answer 7

Up to 3 doors and will still remain effective

Question 8

Members cannot move from one area to another in stairwell…true or false

Answer 8

False: members may move from one area to another as long as remember to close the stairway doors behind them

Question 9

Who is responsible for maintaining a proper stairwell seal

Answer 9

All members on the fire ground

Question 10

Who verifies that stairway doors are closed above The fire floor?

Answer 10

The vent support superviser will request that the IC instruct 3&4 due ladder companies verify

Question 11

Who surveys the floors below fire floor of attack stairway to verify doors are in closed
Position

Answer 11

Vent support supervisor instructs vent group members to survey floors below fire floor

Question 12

Depending on conditions one fan can pressurize up how many stories ?

Answer 12

10 stories

Question 13

Two fans will pressurize

Answer 13

40 story building when properlypostioned

Question 14

If a additional fan is needed a second fan should be placed where ?

Answer 14

3 floors below the fire floor

Question 15

If your trying to clear the stairway of smoke and CO how long should you open the bulkhead door the smoke clears

Answer 15

Approximately 60 seconds

Question 16

What are the benefits of pressuring and clearing contaminated stairwells of smoke andCO

Answer 16

1. Faciltate the rapid and efficient evacuation and searches of the stairwells
2. Limit the contamination of other parts of structure
3. Reduce calls form panicked resident s due to smoke
4. It provides fresh air to operating units

Question 17

If high levels of CO are encountered while using PPFS who should be notified

Answer 17

The IC

Question 18

If using fans for sequential vent where do you place the fan?

Answer 18

On the exterior of building

Question 19

Fans will be placed on the exterior of building when used to sequential vent in this situation the exhaust fans do not need to be used because fans are on exterior of building . True or false

Answer 19

False exhaust hoses shall still be used

Question 20

Firefighters may still operate in attack stairway when sequential venting that stairway

Answer 20

No FFs or civilians .. Must be removed before vent begins

Question 21

If venting the attack stair by sing sequential vent the bulkhead of attack stair should remain closed and bulkhead to evacuation stair should remain open .

Answer 21

No the bulkhead of the attack stair remains open and the bulkhead over the evacuation stair remains closed

Question 22

Co contamination occurs on multiple floors start where to relieve co

Answer 22

Start at the lowest point of contamination and work towards the top of building

Question 23

When trying to mechanical vent a structure where should look for an exhaust opening ?

Answer 23

As a close to and as high as possible to the seat of the fire

Question 24

When should you try and vent a la rge area mechanically ?

Answer 24

After the seat of fire is determined and fire is controlled by a sprinkler or handline

Question 25

When using PPFS to pressurize a large area for the purposes of mechanical vent how far back should you set the fan form I nlet opening ?

Answer 25

Further than 4-6 feet back used to pressurize stairs …..fan at 80 degress

Question 26

How large should the exhaust opening be when using PPFS to mechanical vent a large area?

Answer 26

Double the size of the inlet area where fan is placed

Question 27

When using roll down gates as the inlet area for the fans how do you create the seal

Answer 27

By adjusting the height of the roll down door