Chapter 6

Question 1

List two examples of a severe health hazard water use which requires an air gap.

Answer 1

1.)Nuclear cooling tower make up water line
2.)Sewage Treatment Plant waste water dilution line

Question 2

A two zone below ground irrigation system without chemical additives is a

a) No hazard
b) Minor hazard
c) Severe hazard
d) Moderate hazard

Answer 2

d) Moderate hazard

Question 3

What is the minimum level of backflow protection at the fixture for an Autoclave

a) DCVA
b) PVB
c) RP
d) DCAP

Answer 3

PVB

Question 4

What are the 3 sub-categories of Internal Protection?

Answer 4

A. Individual Protection
B. Area Protection
C. Zone Protection

Question 5

What is the minimum hazard level for premise isolation at an Airport?

A) Premise Isolation is not required
B) Minor Hazard
C) Moderate Hazard
D) Severe Hazard

Answer 5

C.) Moderate Hazard

Question 6

What is the minimum level of hazard for premise isolation at a Church?

a) Premise isolation is not required
b) Minor hazard
c) Moderate Hazard
d) Severe Hazard

Answer 6

b) Minor hazard

Question 7

Which of the following is a term associated with Individual Protection?

** a) Single protection
b) Fixture isolation
c) Appliance protection
d) Make up water isolation**

Answer 7

b) Fixture isolation

Question 8

What is the minimum level of health hazard for a Residential Water Softener?

a) No hazard
b) Minor hazard
c) Severe hazard
d) Moderate hazard

Answer 8

b) Minor hazard

Question 9

From the manual, which is NOT a factor in determining a buildings requirement for Premise Isolation?

a) Types of hazard present
b) Types of material stored on premise
c) Complexity of plumbing system
d) Type of water conditioning equipment is present

Answer 9

d) Type of water conditioning equipment is present

Question 10

What is the minimum level of hazard and backflow preventer is required on a building with a “Green
Roof”?

a) No hazard/ No backflow preventer required
b) Moderate hazard/ Double Check Valve Assembly
c) Severe hazard/ Pressure Vacuum Breaker Assembly
d) Severe hazard/ Reduced Pressure Backflow Assembly

Answer 10

d) Severe hazard/ Reduced Pressure Backflow Assembly