Smoke Removal

Question 1

What will ventilation in timely fashion result in?

Answer 1

Assist search rescue and extinguishment overhaul ops and other suppression ops

Reduce or eliminate product of combustion

Reduce interior temperature within a structure

Improve visibility

Increase safety

Question 2

What factors are dependent for satisfactory natural ventilation?

Answer 2

Proximity of ventilation opening to contaminants

Ability for contaminants to travel unobstructed

Number and size of ventilation opening

Direction of wind

Humidity

Temperature differential between interior and exterior of building

Question 3

What methods are used by blowers for ventilation?

Answer 3

Positive and negative

Question 4

What are disadvantages of negative pressure ?

Answer 4

Personnel must be exposed to position blowers

Contaminants go thru the blower additional cleanup and maintenance

Blowers placed in doors or hallways can block entry or exit to building

To be effectively positioned blowers suspended in doorways or window must utilize straps ladders and other accessories

Interior blowers not as efficient removing contaminants form top of room because the path of least resistance

Question 5

What is positive pressure ventilation?

Answer 5

Setting up blower outside forcing fresh clean pressurized air into building and using small opening like window as exhaust

Question 6

What are advantages of positive pressure ventilation?

Answer 6

Personnel are not exposed to hazardous contaminants

Contaminants are not drawn thru blowers

Doorways hallways and windows do not need to be blocked

Reduce noise level

Not dependent on additional equipment

Removing contaminants top bottom and corners

2 times more effective at removing contaminants than negative pressure

Question 7

What’s the appropriate positioning of blowers at entrance ?

Answer 7

Blowers must be positioned so cone of air issued from blower will completely cover the entrance

Question 8

Air flow between openings must be___?

Answer 8

Controlled to achieve maximum ventilation

Question 9

Positive pressure ventilation is most efficient when exhaust opening is between _____ and. ______ the size of entrance opening

Answer 9

3/4 and 1 3/4

Question 10

What’s the exhaust opening variance dependent of ?

Answer 10

The CFM rating of blower

Question 11

What’s key way to know hat exhaust is not big enough with gasoline powered blower?

Answer 11

Exhaust odor from blower

Question 12

What weather condition may cause adverse effect on blowers?

Answer 12

Wind dependent on direction and velocity

Question 13

Positive pressure has been proven effective against winds of up to____?

Answer 13

25mph

Question 14

Small blowers need to be moved _____ from entrance while LARGER blowers can be moved____ from entrance opening?

Answer 14

Back

Closer

Question 15

Multiple blowers in series can

Answer 15

Frantically increase CFM

Question 16

Blowers parallel can

Answer 16

Provide proper coverage of entrance opening

Question 17

How do you place blowers in series?

Answer 17

Blower A 2 feet from entrance blower b enough distance to cover entrance opening with pressurized air

Question 18

How much more efficient can running blowers in series be?

Answer 18

10%

Question 19

If unequal CFM are utilized how should they be placed ?

Answer 19

Blower A larger blower 2 feet from entrance and blower B smaller blower in back to cover entrance with pressurized air

Question 20

When can smaller blower be placed in front big blower?

Answer 20

If area entrance opening is limited to 3-4ft (raised porch)

Question 21

How to run blowers parallel?

Answer 21

Dependent on size of opening for large openings

Question 22

How top position blower in area without exhaust opening ?

Answer 22

Blower A can be located outside of building and blower B in the bottom portion will provide pressure within area to be ventilated forcing them out upper portion of entrance opening

Question 23

True or false During positive pressure operations it is ok to open up the structure ?

Answer 23

False

Question 24

How much more efficient is a window opening without window ?

Answer 24

By at least 50%

Question 25

Opposing blowers can be utilized to remove contaminants with equal and unequal blowers?

True or False

Answer 25

True

In hallways and apartment

Question 26

When large ventilators removes sky lights or ventilation openings negatively effect ppv what should you do ?

Answer 26

Use them as vertical exhaust and close windows and doors below the

Question 27

Various large doors can be controlled by

Answer 27

Closing the door a bit and reducing the size of opening

Question 28

How do you ventilate buildings with multiple floors?

Answer 28

Start floor with most heat and smoke then systematically floor by floor

Question 29

Will water power blowers prod e more CFM than gas power blowers?

Answer 29

Yes

Question 30

When should water power blowers be considered?

Answer 30

Metro rail tunnels
High rise 
Large underground parking 
Rest homes 
Hospitals

Question 31

Are water power blowers intrinsically safe?

Answer 31

Yes

Question 32

What are carbon monoxide ranges of a fire ?

Answer 32

500ppm -1200 ppm