Wastewater Collection Level 1 and 2
test 2025
A pump with an impeller spinning inside of a volute. - CORRECT ANSWER-Centrifugal
pump
Should be 2-10 fps. - CORRECT ANSWER-Self-cleaning velocity of a gravity sewer
A sewer line under pressure. - CORRECT ANSWER-Force main
Water boiling inside the pump. - CORRECT ANSWER-Cavitation in a pump
To provide access to sewers for equipment and people. - CORRECT ANSWER-
Purpose of a manhole
60 drops per minute. - CORRECT ANSWER-Proper operating leakage for a pump
stuffing box
Allow a path for lubrication to the pump shaft. - CORRECT ANSWER-Purpose of a
lantern ring
The cuts should be all staggered. - CORRECT ANSWER-Pump packing rings
installation
Can include horsepower, efficiency, and flow. - CORRECT ANSWER-Pump curve
Should be at change of direction of sewer, every 300-500 feet apart, and at a change of
sewer elevation. - CORRECT ANSWER-Placement of manholes
Should extend 3 feet above the structure it accesses. - CORRECT ANSWER-Ladder
extension above structure
Known as an SSO, should be reported by phone within 24 hours and in writing within 5
days. - CORRECT ANSWER-Surcharge collection system discharge
test 2025
A pump with an impeller spinning inside of a volute. - CORRECT ANSWER-Centrifugal
pump
Should be 2-10 fps. - CORRECT ANSWER-Self-cleaning velocity of a gravity sewer
A sewer line under pressure. - CORRECT ANSWER-Force main
Water boiling inside the pump. - CORRECT ANSWER-Cavitation in a pump
To provide access to sewers for equipment and people. - CORRECT ANSWER-
Purpose of a manhole
60 drops per minute. - CORRECT ANSWER-Proper operating leakage for a pump
stuffing box
Allow a path for lubrication to the pump shaft. - CORRECT ANSWER-Purpose of a
lantern ring
The cuts should be all staggered. - CORRECT ANSWER-Pump packing rings
installation
Can include horsepower, efficiency, and flow. - CORRECT ANSWER-Pump curve
Should be at change of direction of sewer, every 300-500 feet apart, and at a change of
sewer elevation. - CORRECT ANSWER-Placement of manholes
Should extend 3 feet above the structure it accesses. - CORRECT ANSWER-Ladder
extension above structure
Known as an SSO, should be reported by phone within 24 hours and in writing within 5
days. - CORRECT ANSWER-Surcharge collection system discharge
