Fire Apparatus Driver/Operator Chapter 6: Annual Attack Hose Testing Quiz

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Questions and Answers

What is the diameter range of medium diameter hose?

2 inches to 2.5 inches

2.5 inch to 3 inches (correct)

1 inch to 2 inches

3.5 inches or more

At what pressure must attack hose be tested annually?

185 psi

275 psi

300 psi (correct)

200 psi

Can LDH hose be used as attack hose?

No, unless its use is recommended by the manufacturer (correct)

No, unless its use is recommended by the user's supervisor

Yes, always

Yes, if it's the only available option

What is the typical flow range for a 1.5" hose?

60 to 125 gpm Signup and view all the answers

What is the approximate weight of a 50 ft dry section of a 2.5" handline?

30 lbs Signup and view all the answers

Hard suction hose usually comes in what lengths?

10 or 20 ft sections Signup and view all the answers

What is the typical flow range for a 1.75" handline?

120-200 gpm Signup and view all the answers

What is the normal flow from a 1" booster hose?

40-50 gpm Signup and view all the answers

What does the choice of diameter for supply hose depend on?

Amount of water needed to supply attack pumper Signup and view all the answers

What is the weight of a 100 ft charged section of a 2.5" handline?

200 lbs Signup and view all the answers

What is the most common inlet size for a wye?

2.5" Signup and view all the answers

What is the main function of a Siamese connection?

Combine two hoses into one Signup and view all the answers

When is a reducer used?

To attach smaller hose to a larger hose Signup and view all the answers

What is the purpose of a hose jacket?

To stop a leak in a hose Signup and view all the answers

Where are ball valves commonly used?

On nozzles, gated wyes, and engine discharge gates Signup and view all the answers

What is the function of a double male adapter in the setup of an engine for forward lays?

To connect the nozzle to the hose Signup and view all the answers

What is the typical flow range for a handline nozzle?

60 - 350 gpm Signup and view all the answers

What is the main characteristic of an adjustable gallonage fog nozzle?

Allows operator to select a desired flow Signup and view all the answers

Where are master stream nozzles commonly used?

On deck guns, ladder pipes, and ground monitors Signup and view all the answers

What is the flow range for master stream nozzles?

More than 350 gpm Signup and view all the answers

What is the operating range of automatic adjusting fog nozzles?

90-225 gpm Signup and view all the answers

How long does it take to produce enough steam to extinguish a fire by discharging 1 gallon of water in 100 cubic ft of involved interior space?

30 seconds Signup and view all the answers

What is the flow range for low volume nozzles?

Less than 40 gpm Signup and view all the answers

What is the most commonly encountered nozzle shut-off for low volume nozzles?

Ball valve Signup and view all the answers

What is the characteristic of an automatic adjusting fog nozzle?

Amount of water flowing adjusts to maintain rated pressure Signup and view all the answers

Study Notes

Hose Characteristics

Medium diameter hose has a diameter range of unspecified values.
Attack hose must be tested annually at a pressure of unspecified values.
LDH hose can be used as attack hose, but with certain limitations.

Hose Flow Ranges

1.5" hose has a typical flow range of unspecified values.
1.75" handline has a typical flow range of unspecified values.
1" booster hose has a normal flow of unspecified values.
Handline nozzle has a typical flow range of unspecified values.
Master stream nozzles have a flow range of unspecified values.
Low volume nozzles have a flow range of unspecified values.

Hose Weights and Lengths

A 50 ft dry section of a 2.5" handline weighs approximately unspecified values.
A 100 ft charged section of a 2.5" handline weighs approximately unspecified values.
Hard suction hose usually comes in lengths of unspecified values.

Fittings and Connections

The choice of diameter for supply hose depends on unspecified factors.
The most common inlet size for a wye is unspecified values.
A Siamese connection is used for unspecified purposes.
A reducer is used when unspecified conditions are met.
A double male adapter is used in the setup of an engine for forward lays to perform unspecified functions.

Nozzle Characteristics

An adjustable gallonage fog nozzle is characterized by its ability to adjust gallonage.
Automatic adjusting fog nozzles have an operating range of unspecified values.
Low volume nozzles are characterized by the use of a specific shut-off, which is unspecified.

Fire Suppression

Discharging 1 gallon of water in 100 cubic ft of involved interior space takes unspecified time to produce enough steam to extinguish a fire.

Valve Uses

Ball valves are commonly used in unspecified locations.

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Fire Apparatus Driver/Operator Chapter 6

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