Practice Questions

Question 1

Method of protection against backflow at point of the change of jurisdiction over water.

Answer 1

Containment Protection

Question 2

What is the installation criteria for an SVB assembly?

Answer 2

12” above downstream plumbing

Question 3

What is the installation criteria for a PVB assembly?

Answer 3

12” above downstream plumbing

Question 4

What is the installation criteria for an RP assembly?

Answer 4

12” above ground

Question 5

PVB and SVB assemblies are designed to protect against what kind of backflow.

Answer 5

Back siphonage only (indirect cross connections)

Question 6

Which assembly protects against low degree/non-health risks only?

Answer 6

DC

Question 7

A dual check device is designed with what components?

Answer 7

Two check valves

Question 8

A hose bibb vacuum breaker (HBVB) device is designed with what components?

Answer 8

One check valve and one atmospheric vent

Question 9

An Atmospheric vacuum Breaker (AVB) device is designed with what components?

Answer 9

One piece air inlet valve

Question 10

A Dual Check with atmospheric vent devices is designed with what components?

Answer 10

Two check valves, One atmospheric vent

Question 11

Which backflow preventer device is allowed on landscape irrigation systems?

Answer 11

AVB

Question 12

The risk of thermal expansion is significantly increased when the water system installs which backflow preventer?

Answer 12

Dual Check

Question 13

List all the backflow preventer devices that provide a high degree/ health hazard protection

Answer 13

HBVB, AVB, Deck-mounted vacuum breaker, Air gap

Question 14

List all processes that are categorized as high / health hazard.

Answer 14

Landscape irrigation, Pressurized irrigation, Privately owned well, Ethylene glycol fire suppression, Wastewater connection

Question 15

Which authority states that the water systems are responsible to protect the quality of water to the last free flowing tap?

Answer 15

1974 Safe Drinking Water Act and the 1996 Amendments.

Question 16

How many feet of water can be lifted at sea level with a perfect vacuum?

Answer 16

33.9’

Question 17

A column of water 23.1 feet produces how much pressure

Answer 17

10 PSI
(2.31 feet of head = 1 PSI)

Question 18

What happens to the water when it flows through a constricted area of piping, known as a venturi?

Answer 18

Velocity increases and pressure decreases

Question 19

List all the cross connections which utilize an aspirator

Answer 19

1. Landscape chemigation for fertilizers using a venturi and water pump,
2. Chemical dispenser for cleaning supplies using a venturi and water pump
3. Pesticide applicator connected to a garden hose

Question 20

List which are direct cross connections (back siphonage and back pressure)

Answer 20

1. Landscape chemigation for fertilizers using a venturi and water pump
2. Chemical dispenser for cleaning supplies using a venturi and water pump

Question 21

Barometric loops are legal in Utah (T/F)

Answer 21

False

Question 22

A pressurized irrigation line is not allowed to be installed in the same trench as a culinary water line. (T/F)

Answer 22

True

Question 23

IPC states a PVB can be installed on a landscape irrigation system for backflow protection. However, a local authority statement may state PVB assemblies are not allowed on landscape irrigation systems. (T/F)

Answer 23

True