Chapter 11

Question 1

is an underground water storage receptacle usually found in an area not serviced by a hydrant system?

Answer 1

Cistern

Question 2

Most likely to make it necessary to position portable pumps at the supply source during drafting operations?

Answer 2

When fire apparatus cannot make required approach

Question 3

When drafting, water is forced in and continues to rise until the pump is full of water or:

Answer 3

pressure within the pump and intake hose equals atmospheric pressure.

Question 4

When evaluating adequacy of smaller natural sources, why should caution be used regarding their suitability as a water supply for fire fighting?

Answer 4

They may be more susceptible to fluctuations in adequacy during periods of drought than larger bodies of water.

Question 5

Which of the following is MOST likely to impede access to a natural static water source?

Answer 5

Wet/soft ground approaches

Question 6

Which of the following generally supply water via open canals and portable pipes?

Answer 6

Agricultural irrigation systems

Question 7

Lift can be described as the difference in elevation between the surface of the static water supply and the:

Answer 7

center of the pump intake.

Question 8

Which of the following statements about theoretical lift is MOST accurate?

Answer 8

Maximum lift at a given altitude will be less than theoretical lift.

Question 9

As the point of maximum lift is approached, the volume of water available for the fire pump

Answer 9

may be too low to be of value in fire suppression.

Question 10

floating strainers may be used for water as shallow as:

Answer 10

1 foot

Question 11

When at draft, the sum of the pump discharge pressure and intake pressure correction that takes into account friction loss in the intake hose and height of the lift is called:

Answer 11

net pump discharge pressure.

Question 12

What water depth is generally considered minimum around a barrel-type strainer?

Answer 12

2 feet

Question 13

The height that a column of water may be lifted in sufficient quantity to provide a reliable fire flow is called:

Answer 13

dependable lift.

Question 14

What do some jurisdictions do to help avoid problems with silt and debris?

Answer 14

Install dry hydrants at favorable drafting locations

Question 15

All firefighters working in close proximity to bodies of water must wear personal flotation devices and use safety lines

Answer 15

regardless of the assumed depth.

Question 16

In most circumstances, maximum lift is approximately:

Answer 16

25 feet

Question 17

Which of the following may be equipped with connections similar to a dry hydrant for quick fire department hook-ups?

Answer 17

Large indoor or outdoor pools

Question 18

Any operation that causes salt or dirty water to be drawn into a pump requires the pump be flushed with:

Answer 18

clean fresh water after pumping operation is complete

Question 19

The water supply in a typical residential swimming pool:

Answer 19

may contain adequate water supply for a fire in a single family dwelling

Question 20

During the process of drafting, which of the following results in water being forced into the hose and pump because of a partial vacuum created in the pump?

Answer 20

Pressure in the intake hose and pump drops to lower than atmospheric pressure.

Question 21

Low-level strainers are most commonly used to draft from

Answer 21

portable water tanks.

Question 22

typically contains many millions of gallons (liters) of water and may be found on large commercial or industrial properties?

Answer 22

Ground reservoir

Question 23

is the fire department MOST likely to require the owner to equip with appropriate connection points for fire department use?

Answer 23

Private water storage tank

Question 24

would be the MOST likely concern after traversing frozen ground in order to reach a drafting site?

Answer 24

Thawing may occur from an increase in air temperature.

Question 25

When should driver/operators become familiar with drafting sources within their jurisdiction?

Answer 25

Preincident planning

Question 26

When drafting as lift or friction loss in hard intake hose is increased, water supply capability of the pump:

Answer 26

decreases

Question 27

Theoretical lift can be calculated by determining the actual atmospheric pressure of an area and:

Answer 27

multiplying that number by the water’s pressure per square foot (kPa) while it is in the intake hose.

Question 28

After factoring in surrounding atmospheric pressure and friction loss in the intake hose, every fire pump operating properly should have a dependable lift of:

Answer 28

at least 14.7 feet

Question 29

likely to require specially threaded adapters or other tools to operate the system?

Answer 29

Agricultural irrigation systems

Question 30

likely to have access that may be difficult because of their backyard location and the presence of fences?

Answer 30

Swimming Pools