CWEA Collection Systems Maintenance
Grades 1 & 2 2024 Exams| Questions and
Verified Answers| 100% Correct| Grade A
QUESTION
How often must an excavation site and adjacent areas be inspected for hazardous conditions?
Answer:
Daily
QUESTION
protective shoring systems options include:
Answer:
proper shoring or benching of the sides of the excavation, supporting the sides of a tench with
shoring using a shield in an excavation area.
QUESTION
Proper operation and maintenance of wastewater collection is defined as:
Answer:
keeping wastewater flowing through pipes
QUESTION
What is minimum design velocity for a sewer?
Answer:
a minimum of two feet per second
,QUESTION
Vitrified clay pipe is what type of pipe?
Answer:
Rigid
QUESTION
What is another name for a manhole?
Answer:
Maintenance hole
QUESTION
What are the four parts of a manhole?
Answer:
lid, cone, barrel and base
QUESTION
What are some sewer testing methods?
Answer:
Air, water, mandrill, smoke, dye, lamping
QUESTION
What are some hydraulic cleaning methods?
Answer:
Flushing, balling, kites, parachutes, poly pigs (pigging), high velocity cleaning, jetting, skids and
tiger tails.
,QUESTION
what is the formula for the area of a square?
Answer:
Length x width
QUESTION
The main advantage of using CCTV is what?
Answer:
You can see and record the length and severity of defective pipe
QUESTION
A hazard that may damage a TV camera going through a sewer is:
Answer:
an offset joint
QUESTION
What is the formula for the volume of a cube?
Answer:
Length x Width x Height
QUESTION
What is the formula for the area of a circle?
Answer:
0.785 x Diameter x Diameter
, QUESTION
What is the formula for the volume of a pipe?
Answer:
0.785 x Diameter x Diameter x Length
QUESTION
A flow of 650 pgm would be how many mgd?
Answer:
0.936
QUESTION
How can the members of a balling crew communicate with each other?
Answer:
Hand Signals
QUESTION
Why must you always know where a cleaning tool is in a sewer?
Answer:
so you know where obstructions or difficulties are encountered
QUESTION
emergency stoppages in pipelines may be cleared safely by use of:
Answer:
high velocity cleaners
Grades 1 & 2 2024 Exams| Questions and
Verified Answers| 100% Correct| Grade A
QUESTION
How often must an excavation site and adjacent areas be inspected for hazardous conditions?
Answer:
Daily
QUESTION
protective shoring systems options include:
Answer:
proper shoring or benching of the sides of the excavation, supporting the sides of a tench with
shoring using a shield in an excavation area.
QUESTION
Proper operation and maintenance of wastewater collection is defined as:
Answer:
keeping wastewater flowing through pipes
QUESTION
What is minimum design velocity for a sewer?
Answer:
a minimum of two feet per second
,QUESTION
Vitrified clay pipe is what type of pipe?
Answer:
Rigid
QUESTION
What is another name for a manhole?
Answer:
Maintenance hole
QUESTION
What are the four parts of a manhole?
Answer:
lid, cone, barrel and base
QUESTION
What are some sewer testing methods?
Answer:
Air, water, mandrill, smoke, dye, lamping
QUESTION
What are some hydraulic cleaning methods?
Answer:
Flushing, balling, kites, parachutes, poly pigs (pigging), high velocity cleaning, jetting, skids and
tiger tails.
,QUESTION
what is the formula for the area of a square?
Answer:
Length x width
QUESTION
The main advantage of using CCTV is what?
Answer:
You can see and record the length and severity of defective pipe
QUESTION
A hazard that may damage a TV camera going through a sewer is:
Answer:
an offset joint
QUESTION
What is the formula for the volume of a cube?
Answer:
Length x Width x Height
QUESTION
What is the formula for the area of a circle?
Answer:
0.785 x Diameter x Diameter
, QUESTION
What is the formula for the volume of a pipe?
Answer:
0.785 x Diameter x Diameter x Length
QUESTION
A flow of 650 pgm would be how many mgd?
Answer:
0.936
QUESTION
How can the members of a balling crew communicate with each other?
Answer:
Hand Signals
QUESTION
Why must you always know where a cleaning tool is in a sewer?
Answer:
so you know where obstructions or difficulties are encountered
QUESTION
emergency stoppages in pipelines may be cleared safely by use of:
Answer:
high velocity cleaners
