Pump Ops Chpt 10

Question 1

Making the pump operational referred to as “_________” begins after the apparatus is properly positioned and the parking brake has been set

Answer 1

Putting the pump into gear

Question 2

Typically the least desirable hydrants are those located on “_________” that are served by smaller mains from only one direction.

Answer 2

Dead end mains

Question 3

A _________ consists of stopping at the hydrant, dropping the end if one or more supply hose lines at the hydrant, and then proceeding to the fire location

Answer 3

Forward hose lay

Question 4

Some deportments use a __________ to aid the process of making a forward lay. This valve allows the original supply line that was laid by the first pumper to be immediately charged using hydrant pressure

Answer 4

Four-hydrant valve

Question 5

This allows the second arriving pumper, located at the hydrant, to be connected without interrupting the flow of water to the original supply line. The second pumper is then able to boost the pressure to the supply line using a second intake connection on the valve.

Answer 5

Four way hydrant valve

Question 6

With the ________, hose is laid from the fire to the water source

Answer 6

Reverse lay

Question 7

Load the hose with the make coupling to come out of the bed first when using hose with threaded couplings for a

Answer 7

Reverse lay

Question 8

A common two pumper operation provides for an attack pumper and a war supply pumper. The _______ reports directly to the incident scene to begin initial operations using water from it’s onboard water tank. The ________ lays a supply line front he attack pumper back to the water source.

Answer 8

First pumper (attack pumper)

Second (water supply)

Question 9

When the pump is full of water and the pressure in the system has the stabilized with no water flowing, a reading on the master intake gauge indicates the ________ in the water supply system.

Answer 9

Static pressure

Question 10

Pumps supplying a relay operation or master stream are usually used to supply large amounts of water, requiring the use of the _______ setting of the transfer valve

Answer 10

Parallel volume

Question 11

When a pumper is connected to a hydrant and is not discharging water, the pressure shown on the intake gauge is ___________.

Answer 11

Static pressure

Question 12

When the pumper is discharging water, the intake gauge displays the _______.

Answer 12

Residual pressure

Question 13

When using the _______, the driver /operator must note the static pressure of the water system before any pump discharges are open or know the usual static pressure in the water supply system under normal circumstances.

Answer 13

Square-lines-method

Question 14

However, it is possible to evacuate some of the air inside the pump creating a _______, which allows atmospheric pressure acting on the surface of the water to force the water into the fire pump.

Answer 14

Pressure differential (partial vacuum)

Question 15

The amount of _______ in the intake hose depends on the diameter and the length of the hose as well as the intake strainer and any adapter use.

Answer 15

Friction loss

Question 16

With the pump moving water, the vacuum reading on the master intake gauge will provide an indication of the remaining capacity if the pump. Most pumps are able to develop a vacuum capacity of approximately _______ of mercury

Answer 16

22 inches

Question 17

In theory,________ can be described as water being discharged faster than it is coming into the pump. This condition occurs when air cavities are created in the pump or bubbles pass through the pump.

Answer 17

Cavitation

Question 18

In order for a pumper to approach it’s rated capacity using a traditional strainer, there must be at least _______ of water over the strainer

Answer 18

24 inches

Question 19

These strainers are designed to sit directly on the bottom of a tank or pool and allow water to be effectively drafted down to a depth of approximately 2inches

Answer 19

2 inches low level strainers

Question 20

Each time _______ is pumped through the apparatus, the pump and piping should be thoroughly flushed with fresh water soon afterwards.

Answer 20

Non potable water

Question 21

All fire pumps meeting NFPA and underwriters laboratories inc. requirements are rated to pump their capacity at ______ of lift.

Answer 21

10 feet

Question 22

A pumper. In good working order can lift water a maximum of _____.

Answer 22

25 feet

Question 23

To create an effective fire stream, a lift no greater than ______ is recommended. Working with this lift, the pump operates at about 60 percent of its rated capacity.

Answer 23

20 feet

Question 24

When the pump has been made operational, priming the pump will begin the operation. For two stage pumps, the transfer valve must be in the ___________. A pump in series pressure position may trap air that will need to be removed.

Answer 24

Parallel volume position

Question 25

Most priming pumps are intended to work most effectively when the engine is set at rate between ______ and _____.

Answer 25

1000 and 1200 rpm

Question 26

While the pump is operating, gradual increase in the vacuum may be noted with no change in the flow rate. This is an indication that a ______ is developing

Answer 26

Blockage

Question 27

The installation of all occupancies with ______ should be identified in preincedent planning.

Answer 27

Automatic sprinkler systems

Question 28

If a sprinkler system is to be supplied at the FDC, the driver/operator should slowly develop the amount of pressure required to supply the system, after the need to supply the system has been confirmed. Multi stage pumps should be operated in ________.

Answer 28

Parallel volume position

Question 29

Allow for quicker access to water supply for attack hose lines in multi floor or single buildings with large floor areas.

Answer 29

Standpipe systems

Question 30

Add approximately _____ for each floor above the fire department connection that will have operating fire streams

Answer 30

5 psi

Question 31

When a standpipe system is known to be equipped with _____, the elevation pressure used must be based on the total height of the standpipe or zone being used.

Answer 31

Pressure reducing valves

Question 32

Driver operators should maintain a residual pressure of at least ____ on their master intake gauges at all times during pumping operations.

Answer 32

20 psi

Question 32

The ____ is the most direct method of supplementing hydrant pressure or performing drafting operations

Answer 32

Reverse lay

Question 32

To use the percentage method, first calculate the drop in pressure as a

Answer 32

Percentage

Question 33

The _____ is a quick and easy way to calculate available water using psi and gpm

Answer 33

First digit method

Question 34

The ability to overcome losses in pressure is limited to atmospheric pressure at sea level 14.7psi. The inches of mercury measurement is used in drafting since the changes in pressure are so minute. This pressure decreases approximately _____ for each 1000 ft of altitude gain.

Answer 34

0.5 psi

Question 35

Although cavitation can occur when operating from a hydrant system, it often occurs during

Answer 35

Drafting operations

Question 36

The first consideration in establishing a drafting operation is

Answer 36

Site selection

Question 37

If the draft is being established to supply water tenders for a shuttle operation, there may be several options. A site may be selected by:

Answer 37

Amount of water
Type or quality of water
Accessibility of water

Question 38

The most important factor in choosing the draft site is the

Answer 38

Amount of water available

Question 39

When using a portable tank or swimming pool for drafting operations, a _______ is the appliance of choice

Answer 39

Low level strainer

Question 40

Accessibility to a water source is an important factor in selecting a

Answer 40

Drafting site

Question 41

If the apparatus features a ______, the engine rpm should be kept as low as possible without causing the engine to stall.

Answer 41

Vacuum type primer

Question 42

The most common inability to prime is an ______ that prevents the primer from developing enough vacuum to successfully draft water

Answer 42

Air leak

Question 43

The most common cause for an air leak is an

Answer 43

Open drain

Question 44

The most common place for blockage to occur is in the

Answer 44

Strainer

Question 45

Several types of problems may occur during drafting operations. They all fall into the following general categories

Answer 45

Air leak on the intake side of the pump
Whirlpool allowing air to enter the pump
Air leakage due to defective pump packing

Question 46

Many manual standpipe systems are designed to be pumped at a pressure of ____ at the FDC

Answer 46

150 psi