BOOK 29 Truck Operations Manual- SMOKE REMOVAL

Question 1

The primary goal of effective ventilation operations is the reduction or removal of what?

Answer 1

Smoke, heat, and fire gasses

Question 2

What two basic methods are utilized to pressurize a contaminated area?

Answer 2

Natural and mechanical positive pressure

Question 3

A simple method to NATURALLY ventilate products of combustion is the utilization of natural _______ currents.

Answer 3

Convection

Question 4

What two methods are utilized to provide pressurized ventilation via portable blowers?

Answer 4

Positive and negative pressure

Question 5

Negative pressure ventilation the blower is placed ______ of the structure.

Answer 5

Inside

Question 6

Positive pressure ventilation the blower is placed ________ of the structure.

Answer 6

Outside

Question 7

Positive pressure is most efficient when the exhaust opening (heat hole, window, door, etc.) is between _____ to _____ the size of the entrance opening.

Answer 7

3/4 to 1 3/4

Question 8

If it is not possible to utilize the prevailing wind as an advantage, positive pressure has proven effective AGAINST winds (leeward to windward) of up to ___ mph.

Answer 8

25

Question 9

Due to the size of the pressurized cone, the small 18” blower needs to be moved _____ from entrance openings while the large 24” blowers can be placed ______.

Answer 9

Back, closer

Question 10

When blowers are placed in series, the blower furthest from the door increases the blower closest to the door capacity by approximately ___ percent.

Answer 10

10%

Question 11

If two blowers of unequal CFM are utilized in the series position, place the large blower about ___ feet back from the entrance opening and utilize the smaller blower ______ the larger blower to cover the entrance opening with pressurized air.

Answer 11

2 feet, behind

Question 12

Removal off screens on windows will increase efficiency of ventilation by at least ___%.

Answer 12

50%

Question 13

500 ppm (parts per million) of carbon monoxide can be inhaled for ___ hour(s) without appreciable effects.

Answer 13

One hour

Question 14

700 ppm of carbon monoxide inhaled for one hour will cause ____ appreciable effects.

Answer 14

Some

Question 15

1200 ppm of carbon monoxide inhaled for one hour is ______.

Answer 15

Dangerous

Question 16

Concentrations of 4000 ppm of carbon monoxide and over are fatal in less than ____ hour(s)

Answer 16

One

Question 17

Measurements during actual overhaul operations have indicated that positive pressure can easily reduce carbon monoxide concentrations of 1000 ppm to approximately ___ ppm to ___ ppm.

Answer 17

130- 220 ppm

Question 18

A single 18” blower is adequate for an average ____ square feet single family dwelling.

Answer 18

2000