Wastewater collections Exam 2025 quizzes & 100%
Correct Answers
What is another term for wastewater collections system?
Sewerage System
What is the term used to describe the seepage of ground water into a sewer system
including service connections?
Infiltration
What is SSO stand for?
Sanitary sewer overflow
What is the minimum scouring velocity in a sewer system?
2 feet per second no more than 10 feet per second
Smoke testing of wastewater collections system is used to determine what?
The location of illegal connections to a collection system
High velocity cleaners, kites, bags, poly pigs and sewer scooters are what type of cleaning
method?
Hydraulic cleaning
What is the most widely used chemical to treat hydrogen sulfide?
Chlorine
How many colors of markings are there for OUPS utility markings?
, 8
What is installed in to give access to a portion of the service line leading to the main lines?
A Wye
Sewer pipes are usually tested at what air pressure above any outside water pressure on the
pipe?
3 to 5 psi
What should be used to test for deflection and offset joints when repairing or installing new
sewer lines?
A Mandrel
What occurs in pumps when the absolute pressure at the pump inlet drops below the vapor
pressure of the water being pumped?
Cavitation
What is the heart of a centrifugal pump?
Impeller
What is used to provide a seal where the shaft passes through the pump casing in order to
keep air from being drawn or sucked into the pump or the water pump from coming out?
Packing
What is a pump fitted with that must never run dry or the faces will be burned and
ruined?
Correct Answers
What is another term for wastewater collections system?
Sewerage System
What is the term used to describe the seepage of ground water into a sewer system
including service connections?
Infiltration
What is SSO stand for?
Sanitary sewer overflow
What is the minimum scouring velocity in a sewer system?
2 feet per second no more than 10 feet per second
Smoke testing of wastewater collections system is used to determine what?
The location of illegal connections to a collection system
High velocity cleaners, kites, bags, poly pigs and sewer scooters are what type of cleaning
method?
Hydraulic cleaning
What is the most widely used chemical to treat hydrogen sulfide?
Chlorine
How many colors of markings are there for OUPS utility markings?
, 8
What is installed in to give access to a portion of the service line leading to the main lines?
A Wye
Sewer pipes are usually tested at what air pressure above any outside water pressure on the
pipe?
3 to 5 psi
What should be used to test for deflection and offset joints when repairing or installing new
sewer lines?
A Mandrel
What occurs in pumps when the absolute pressure at the pump inlet drops below the vapor
pressure of the water being pumped?
Cavitation
What is the heart of a centrifugal pump?
Impeller
What is used to provide a seal where the shaft passes through the pump casing in order to
keep air from being drawn or sucked into the pump or the water pump from coming out?
Packing
What is a pump fitted with that must never run dry or the faces will be burned and
ruined?
