Chapter 14: Water Supply Systems

Question 1

What gpm and color is a class C fire hydrant

Answer 1

> 500 gpm
Red

Question 2

What gpm and color is a class B fire hydrant

Answer 2

500-999 gpm
Orange

Question 3

What gpm and color is a class A fire hydrant

Answer 3

1000-1499 gpm
Green

Question 4

What gpm and color is a class AA fire hydrant

Answer 4

1500 gpm and higher
Light blue

Question 5

Mobile water supply apparatus’ are often called:

Answer 5

Tankers or water tenders

Question 6

How much can portable water tanks carry?

Answer 6

600-5000 gal

Question 7

Term for the top of a hydrant

Answer 7

Bonnet

Question 8

How much gpm can a portable pump deliver?

Answer 8

500 gpm

Question 9

A lake or stream is an example of a:

Answer 9

Static water source

Question 10

What type of water source does a dry hydrant access?

Answer 10

A static water source

Question 11

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

Answer 11

The discharge cap must be left off until it is drained

Question 12

What are two ways fire fighters can obtain water

Answer 12

Municipal-type water systems
Static water sources

Question 13

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

Answer 13

Primary feeders
Secondary feeders
Distributors

Question 14

What tools can remove burrs on hydrant threads?

Answer 14

Steel brush
Small triangular file

Question 15

What should be checked in hydrant caps during routine inspections?

Answer 15

Gaskets

Question 16

What are the three parts of a municipal water system?

Answer 16

Water source
Treatment plant
Distribution system

Question 17

Water main distribution systems follow a ____ system

Answer 17

Grid

Question 18

The size of a water main is based upon:

Answer 18

The amount of water needed for normal consumption
Fire protection needs

Question 19

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

Answer 19

Place a hand against the opening and feel for suction

Question 20

Static pressure

Answer 20

Pressure in a system when the water is not moving

Question 21

When would a dry-barrel hydrant be required?

Answer 21

When the climate is subject to freezing

Question 22

What does a dump valve on a tanker do?

Answer 22

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

Question 23

Water hammer

Answer 23

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

Question 24

How can fire fighters avoid water hammer?

Answer 24

Open and close hydrants and nozzles slowly

Question 25

How often should hydrants be checked?

Answer 25

Annually

Question 26

How may gallons of water do tankers usually carry?

Answer 26

1000-3500 gal

Question 27

What are the two types of hydrants?

Answer 27

Dry-barrel
Wet-barrel

Question 28

Most common size of fire hose outlets on fire hydrants?

Answer 28

2 1/2 in or larger