CPII Utility Systems 3

Question 1

Which pipe material is most susceptible to corrosion in acidic soils and requires cathodic protection?

Accepted Answer

Ductile iron

Answer

Ductile iron pipe is susceptible to electrolytic and acidic soil corrosion and often requires polyethylene encasement or cathodic protection.

Question 2

A fire hydrant barrel is found cracked at the ground line during routine inspection. What is the correct disposition?

Accepted Answer

Mark out of service and schedule repair

Answer

A cracked hydrant barrel is a safety hazard and must be immediately marked out of service and repaired before returning to active use.

Question 3

What is the purpose of a pressure-reducing valve (PRV) in a water distribution system?

Accepted Answer

Reduce high inlet pressure to a safe downstream level

Answer

A PRV automatically reduces high upstream pressure to a preset lower downstream pressure to protect pipes, meters, and fixtures from over-pressure damage.

Question 4

During a utility easement inspection, you find a property owner has constructed a fence across a buried gas line easement. What is the first action to take?

Accepted Answer

Document the encroachment and notify the utility owner

Answer

The inspector's role is to document encroachments and notify the responsible utility owner, who has the legal authority to pursue easement enforcement.

Question 5

What does a deflection angle greater than the manufacturer's allowable limit in a flexible pipe joint most directly risk?

Accepted Answer

Joint separation and leakage

Answer

Exceeding the allowable deflection angle at a flexible joint can cause the gasket to be extruded or the joint to separate, resulting in leakage.

(CPII) Certified Public Infrastructure Inspector Practice Test

(CPII) Certified Public Infrastructure Inspector Practice Test

CPII Utility Systems 3