Chapter 17

Question 1

Gasoline has a flashpoint of approx?

Answer 1

-45 F

Question 2

Diesel fuel has a relatively high flash point, usually?

Answer 2

Above 100 F

Question 3

Class B foam works in what 4 ways?

Answer 3

Smother
Separate flames
Suppress vapor
Cool surrounding surfaces

Question 4

Protein and Fluoroprotein foams consists of products from a protein hydrolystate, they produce what type of foam blanket?

Answer 4

Thick

Question 5

AFFF usually produces what type of blanket?

Answer 5

thinner, more fluid.

Question 6

Foam for suppression of flammable liquid spill fires is usually referred to as?

Answer 6

Low expansion foam

Question 7

Low expansion foam ratio

Answer 7

20:1

Question 8

Medium and high expansion foam ratio range?

Answer 8

20:1 to approx 1,000:1

Question 9

The handheld appliance most critical to the production of foam is typically referred to as?

Answer 9

Inline eductor

Question 10

The discharge or male thread of an inline eductor is normally? The intake or female coupling may be either?

Answer 10

male- 1 1/2

female- 1 1/2 or 2 1/2

Question 11

Two important points for first responders when selecting discharge outlet for inline eductor?

Answer 11

siphon tube will reach bottom
and
someone available to switch tube

Question 12

If pump operator is assigned to switch siphon tube. Best location for eductor?

Answer 12

in proximity of pump panel

Question 13

Two characteristics of inline eductors often overlooked by responders?

Answer 13

required minimum inlet pressure
and
Max length of hose

Question 14

For some inline eductors, maximum length for 1 3/4 may range from

Answer 14

500-700 ft.

Question 15

Most pre-connected lines are?

Answer 15

150-200 ft.

Question 16

A spill fire is defined as a spill that is not contained in a dike with an average depth that does not exceed? and Bound?

Answer 16

1 inch

Only by the contour of the surface which it is laying

Question 17

Minimum application rates are available from the NFPA standard?

Answer 17

11

Question 18

AFFF minimum application rate for non-diked spill fires?

Answer 18

0.1gpm per sq ft.

Question 19

Protein and Fluroprotein foam application rate?

Answer 19

0.16gpm per sq ft.

Question 20

First responders attempting to extinguish a spill fire should be prepared for a discharge time of?

Answer 20

15 mins.

Question 21

What is the key to foam pre-planning?

Answer 21

Knowing when to delay fire attack

Question 22

Increasing the foam application rate above the NFPA minimum will not allow FR to extinguish a larger fire, but it can?

Answer 22

Reduce the time required to achieve control

Question 23

Most FR attempting to extinguish a flammable liquid spill fire with a hoseline will achieve satisfactory results by aiming the nozzle where?

Answer 23

Just in front of the leading edge of the fire, roll or push it on.

Question 24

The stream of a foam nozzle should never be?

Answer 24

directed into burning fuel

Question 25

To assure effectiveness of a foam blanket it is vital that FR?

Answer 25

Refrain from walking or otherwise disturbing the blanket

Question 26

What should be used to detect presence of flammable vapors?

Answer 26

Atmospheric monitors