CWEA Collections System Maintenance Grade 3-4 9/15/24
A Flagger should Stand? D. As stated in "A" or "B" above.
A. On the shoulder adjacent to traffic being controlled
B. In the closed lane before stopping vehicle traffic
C. In the traffic lane.
D. As stated in "A" or "B" above.
Legally responsible officials are required to report D. Within 2 hours
category 1 sanitary sewer overflows?
A. Within 30 days
B. Before end of the day
C. As soon as possible
D. Within 2 hours
When working in confined spaces or sewers, what form A. Mirrors to direct the sunlight or explosion proof lighting.
of lighting would you use?
A. Mirrors to direct the sunlight or explosion proof
lighting.
B. Ordinary electric lights
C. Propane, Gas, or kerosene lanterns
D. Special matches
What can happen if water-based substances are used to c. Receive an electrical shock
extinguish electrical fires?
a. Nothing but extinguish the fire
b. The fumes are not harmful
c. Receive an electrical shock
d. They will corrode the electrical contacts
When testing a manhole for explosive gases when b. Before removing the manhole cover
should the first tests be made?
a. After removing the manhole cover
b. Before removing the manhole cover
c. At any time
d. After ventilation
Atmospheric hazards encountered in manholes can c. lack of oxygen.
include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres.
When setting up to ventilate a manhole, the air inlet c. 2.0
should be how many feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0
Which chemical may be used for odor control in a sewer b. Hydrogen peroxide
system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a warning tag attached to a c. Signature of person who locked out switch and who is the only person
switch that has been locked out? authorized to remove tag.
a. Directions for removing tag.
b. Name of nearest physician to call in case of
emergency.
c. Signature of person who locked out switch and who is
the only person authorized to remove tag.
d. Time to unlock switch.
Under what conditions must each member of the rescue a. At least once a year in a simulated situation or by the satisfactory performance
service practice permit space rescues? of an actual rescue.
a. At least once a year in a simulated situation or by the
satisfactory performance of an actual rescue.
b. At least twice a year in simulated situations.
c. At least once a year in simulated situation using non-
representative space conditions
d. At least four times a year.
, CWEA Collections System Maintenance Grade 3-4 9/15/24
How is a permit-required space described? a. Has or may contain atmospheric, engulfment, design, or other serious
a. Has or may contain atmospheric, engulfment, design, health/safety hazard.
or other serious health/safety hazard.
b. Is large enough to enter and work in and is meant for
continuous occupancy.
c. Is large enough to enter and work in and has an
unrestricted entry/exit.
d. Never contains an atmospheric or engulfment hazard.
What are the three duties of personnel in a Confined c. Authorized entrants, attendants, entry supervisors.
Space entry?
a. Authorized entrants, parking attendants, entry
supervisors.
b. Unauthorized entrants, attendants, entry supervisors.
c. Authorized entrants, attendants, entry supervisors.
d. Authorized entrants, attendants, evening supervisors
What is an important element of hydrogen sulfide a. Flow velocity.
production?
a. Flow velocity.
b. Pipe materials.
c. Amount of odor present.
d. Amount of inorganic materials.
Which of the following is the most common factor leading a. Anaerobic conditions.
to the generation of hydrogen sulfide in sewers?
a. Anaerobic conditions.
b. Constantly high velocity of flow in sewers.
c. Low concentrations of ferrous sulfide.
d. Presence of highly soluble fats and oils.
A category 2 SSO is: d. any SSO which is not category 1.
a. any SSO which does not reach surface waters.
b. not reportable.
c. preventable.
d. any SSO which is not category 1.
Which tool would you use for cleaning under a pipe, or a. Miner's pick.
hard dirt near a pipe?
a. Miner's pick.
b. Wrench.
c. Drill.
d. Hammer.
A torque wrench is used to tighten which device? a. Pipe clamp.
a. Pipe clamp.
b. Drill chuck.
c. Light bulb.
d. Sheet metal screw
Which unit uses high water pressure and a vacuum to c. Combination unit
clean sewer lines?
a. Jetter
b. Mechanical rodder
c. Combination unit
d. Bucket machine
In sewer maintenance, what is a pig? a. A ball forced through a sewer line.
a. A ball forced through a sewer line.
b. A power rod.
c. Any foul smelling equipment.
d. The hydraulic rodding truck.
When pouring a concrete slab, which of the following c. Trowel.
tools is used to finish the concrete?
a. Grasshopper.
b. Tamper.
c. Trowel.
d. Vibrator.
A Flagger should Stand? D. As stated in "A" or "B" above.
A. On the shoulder adjacent to traffic being controlled
B. In the closed lane before stopping vehicle traffic
C. In the traffic lane.
D. As stated in "A" or "B" above.
Legally responsible officials are required to report D. Within 2 hours
category 1 sanitary sewer overflows?
A. Within 30 days
B. Before end of the day
C. As soon as possible
D. Within 2 hours
When working in confined spaces or sewers, what form A. Mirrors to direct the sunlight or explosion proof lighting.
of lighting would you use?
A. Mirrors to direct the sunlight or explosion proof
lighting.
B. Ordinary electric lights
C. Propane, Gas, or kerosene lanterns
D. Special matches
What can happen if water-based substances are used to c. Receive an electrical shock
extinguish electrical fires?
a. Nothing but extinguish the fire
b. The fumes are not harmful
c. Receive an electrical shock
d. They will corrode the electrical contacts
When testing a manhole for explosive gases when b. Before removing the manhole cover
should the first tests be made?
a. After removing the manhole cover
b. Before removing the manhole cover
c. At any time
d. After ventilation
Atmospheric hazards encountered in manholes can c. lack of oxygen.
include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres.
When setting up to ventilate a manhole, the air inlet c. 2.0
should be how many feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0
Which chemical may be used for odor control in a sewer b. Hydrogen peroxide
system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a warning tag attached to a c. Signature of person who locked out switch and who is the only person
switch that has been locked out? authorized to remove tag.
a. Directions for removing tag.
b. Name of nearest physician to call in case of
emergency.
c. Signature of person who locked out switch and who is
the only person authorized to remove tag.
d. Time to unlock switch.
Under what conditions must each member of the rescue a. At least once a year in a simulated situation or by the satisfactory performance
service practice permit space rescues? of an actual rescue.
a. At least once a year in a simulated situation or by the
satisfactory performance of an actual rescue.
b. At least twice a year in simulated situations.
c. At least once a year in simulated situation using non-
representative space conditions
d. At least four times a year.
, CWEA Collections System Maintenance Grade 3-4 9/15/24
How is a permit-required space described? a. Has or may contain atmospheric, engulfment, design, or other serious
a. Has or may contain atmospheric, engulfment, design, health/safety hazard.
or other serious health/safety hazard.
b. Is large enough to enter and work in and is meant for
continuous occupancy.
c. Is large enough to enter and work in and has an
unrestricted entry/exit.
d. Never contains an atmospheric or engulfment hazard.
What are the three duties of personnel in a Confined c. Authorized entrants, attendants, entry supervisors.
Space entry?
a. Authorized entrants, parking attendants, entry
supervisors.
b. Unauthorized entrants, attendants, entry supervisors.
c. Authorized entrants, attendants, entry supervisors.
d. Authorized entrants, attendants, evening supervisors
What is an important element of hydrogen sulfide a. Flow velocity.
production?
a. Flow velocity.
b. Pipe materials.
c. Amount of odor present.
d. Amount of inorganic materials.
Which of the following is the most common factor leading a. Anaerobic conditions.
to the generation of hydrogen sulfide in sewers?
a. Anaerobic conditions.
b. Constantly high velocity of flow in sewers.
c. Low concentrations of ferrous sulfide.
d. Presence of highly soluble fats and oils.
A category 2 SSO is: d. any SSO which is not category 1.
a. any SSO which does not reach surface waters.
b. not reportable.
c. preventable.
d. any SSO which is not category 1.
Which tool would you use for cleaning under a pipe, or a. Miner's pick.
hard dirt near a pipe?
a. Miner's pick.
b. Wrench.
c. Drill.
d. Hammer.
A torque wrench is used to tighten which device? a. Pipe clamp.
a. Pipe clamp.
b. Drill chuck.
c. Light bulb.
d. Sheet metal screw
Which unit uses high water pressure and a vacuum to c. Combination unit
clean sewer lines?
a. Jetter
b. Mechanical rodder
c. Combination unit
d. Bucket machine
In sewer maintenance, what is a pig? a. A ball forced through a sewer line.
a. A ball forced through a sewer line.
b. A power rod.
c. Any foul smelling equipment.
d. The hydraulic rodding truck.
When pouring a concrete slab, which of the following c. Trowel.
tools is used to finish the concrete?
a. Grasshopper.
b. Tamper.
c. Trowel.
d. Vibrator.
