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Rural Metro > Chapter 14: Water Supply Systems > Flashcards

Chapter 14: Water Supply Systems Flashcards

1
Q

What gpm and color is a class C fire hydrant

A

> 500 gpm
Red

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2
Q

What gpm and color is a class B fire hydrant

A

500-999 gpm
Orange

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3
Q

What gpm and color is a class A fire hydrant

A

1000-1499 gpm
Green

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4
Q

What gpm and color is a class AA fire hydrant

A

1500 gpm and higher
Light blue

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5
Q

Mobile water supply apparatus’ are often called:

A

Tankers or water tenders

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6
Q

How much can portable water tanks carry?

A

600-5000 gal

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7
Q

Term for the top of a hydrant

A

Bonnet

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8
Q

How much gpm can a portable pump deliver?

A

500 gpm

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9
Q

A lake or stream is an example of a:

A

Static water source

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10
Q

What type of water source does a dry hydrant access?

A

A static water source

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11
Q

What must be done with a dry-barrel hydrant to ensure it drains fully?

A

The discharge cap must be left off until it is drained

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12
Q

What are two ways fire fighters can obtain water

A

Municipal-type water systems
Static water sources

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13
Q

What are the 3 different sizes of water mains from biggest to smallest?

A

Primary feeders
Secondary feeders
Distributors

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14
Q

What tools can remove burrs on hydrant threads?

A

Steel brush
Small triangular file

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15
Q

What should be checked in hydrant caps during routine inspections?

A

Gaskets

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16
Q

What are the three parts of a municipal water system?

A

Water source
Treatment plant
Distribution system

17
Q

Water main distribution systems follow a ____ system

A

Grid

18
Q

The size of a water main is based upon:

A

The amount of water needed for normal consumption
Fire protection needs

19
Q

What is a quick way to determine whether a dry-barrel hydrant is still draining ?

A

Place a hand against the opening and feel for suction

20
Q

Static pressure

A

Pressure in a system when the water is not moving

21
Q

When would a dry-barrel hydrant be required?

A

When the climate is subject to freezing

22
Q

What does a dump valve on a tanker do?

A

Enables tankers to offload as much as 3000 gal of water in 1 minute

23
Q

Water hammer

A

Surge of pressure caused by suddenly stopping the flow of a stream of water

24
Q

How can fire fighters avoid water hammer?

A

Open and close hydrants and nozzles slowly

25
Q

How often should hydrants be checked?

A

Annually

26
Q

How may gallons of water do tankers usually carry?

A

1000-3500 gal

27
Q

What are the two types of hydrants?

A

Dry-barrel
Wet-barrel

28
Q

Most common size of fire hose outlets on fire hydrants?

A

2 1/2 in or larger

Rural Metro (10 decks)

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