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Dashboard
Fire Inspector
Chapter 11
Knowledge Check
1.
Valves in water systems are usually the ________ type and located underground.
indicating
alarm test
nonindicating
automatic drain
2.
The system for moving water by installing pumps in the distribution system when elevation pressure cannot provide sufficient pressure is a:
gravity system.
suction system.
combination system.
direct pumping system.
3.
Before beginning a flow test, an inspector should verify that the air chamber on the pitot tube is:
drained.
full of air.
full of water.
completely closed.
4.
The BEST method for evaluating the capabilities of a water supply system is:
photographs.
an in-person inspection.
reviewing documentation.
interviewing the property owner.
5.
Which problem is the MOST important when it comes to elevated tanks?
Open valves
Tanks with low levels
Expensive and intensive maintenance
Limitation of pressure available from the tanks
6.
What information do calculations or graphical analyses from fire flow tests provide?
Quality of the water available
Which tools will be needed to access a hydrant
Amount of water flow from individual hydrants
Cost of the water distribution for specific hydrants
7.
Which type of obstructions include growths, crusts, or rust on the inside walls of water mains?
Encrustations
Sedimentation deposits
Malfunctioning deposits
Foreign matter other than deposits
8.
What is the purpose of a fire flow test?
To determine the way a fire moves through a building
To determine the rate of fire flow available for fire suppression
To determine how many hydrants are needed on a residential street
To determine the optimum time period for fire suppression at a specific location
9.
Water distribution and storage systems include:
water pumps.
wells and springs.
purification and desalination plants.
storage tanks, control valves, piping systems, and hydrants.
10.
What are the two methods that can be used to compute fire flow test results?
Historical comparison
Jacobi Method and basic math
Physics and differential equations
Graphical analysis and mathematical method
11.
What entity is usually responsible for public water supply systems?
Fire department
Local government
Private contractor
Federal government
12.
What size outlets should generally be used to conduct hydrant flow tests?
2 1/ 2-inch (65 mm)
4-inch (100 mm)
4 14 -inch (115 mm)
6-inch (152 mm)
13.
What is the easiest way to determine how much water is flowing from a hydrant outlet?
Review the historical documentation
Read the manufacturer documentation
Ask the municipal water department engineer
Refer to prepared tables for nozzle/outlet discharge
14.
When testing multiple hydrants, where should the test hydrant be located?
Centrally located
Before the flow hydrants
After all the flow hydrants
Near the water supply source
15.
The interlocking network of water mains that compose a water distribution system is referred to as a:
grid system.
loop system.
hydrant framework.
distribution network.
16.
How often should control valves be exercised?
At least once a week
At least once a month
At least once a year
At least every five years
17.
Small water mains that serve individual fire hydrants are:
distributors.
primary feeders.
back-up feeders.
secondary feeders.
18.
Why do workers close control valves?
To initiate repairs
To prevent injuries
To assist firefighters
Control valves should never be closed
19.
The basic water supply system component that includes water pumps is:
water sources.
treatment facilities.
distribution systems.
means of moving water.
20.
Which type of hydrant should be located as close as possible to the location requiring flow test results?
Test hydrant
Flow hydrant
Dry-barrel hydrant
Wet-barrel hydrant
21.
Who is responsible for the inspection, testing, and maintenance of private water supply systems?
Local government
State government
Private contractor
Facility owners/occupants
22.
Fire protection engineers have established _________ as the minimum required residual pressure when computing the available water for area flow-test results.
10 psi (70 kPa)
20 psi (140 kPa)
40 psi (280 kPa)
80 psi (560 kPa)
23.
Which basic water supply system component includes lakes, reservoirs, and ponds?
Water sources
Pressure tanks
Storage systems
Treatment facilities
24.
A _________ may be an open lake or pond or an enclosed structure.
reservoir
gravity tank
suction tank
pressure tank
25.
A _______ delivers water from the source to the distribution system without pumping equipment.
gravity system
suction system
combination system
direct pumping system
26.
Which tanks are located at ground level and provide a water supply source for fire pumps?
Gravity tanks
Suction tanks
Pressure tanks
Elevated tanks
27.
Unless some effort is made to steady the _______ , the movement of the water will make an accurate reading difficult.
pitot tube
hydrant outlet
pressure gauge
static pressure valve
28.
Which tanks are used to stabilize or balance the pressures on distribution systems at times of peak demand?
Gravity tanks
Suction tanks
Pressure tanks
Negative pressure tanks
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