CWEA Collections System Maintenance Grade 3 (2026
Edition)||| questions and answers with rationales/graded
A+/2026 update/100% correct /instant download
Terms in this set (82)
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 D. Within 2 hours
report 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, A. Mirrors to direct the sunlight or explosion proof lighting.
what form 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 c. Receive an electrical shock
are used to 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 b. Before removing the manhole cover
when 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 c. lack of oxygen.
manholes can 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 c. 2.0
air inlet 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 b. Hydrogen peroxide
control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a warning tag c. Signature of person who locked out switch and who is the
attached to a switch that has been locked only person authorized to remove tag.
out?
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 a. At least once a year in a simulated situation or by the
of the rescue service practice permit space satisfactory performance of an actual rescue.
rescues?
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.
Edition)||| questions and answers with rationales/graded
A+/2026 update/100% correct /instant download
Terms in this set (82)
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 D. Within 2 hours
report 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, A. Mirrors to direct the sunlight or explosion proof lighting.
what form 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 c. Receive an electrical shock
are used to 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 b. Before removing the manhole cover
when 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 c. lack of oxygen.
manholes can 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 c. 2.0
air inlet 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 b. Hydrogen peroxide
control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a warning tag c. Signature of person who locked out switch and who is the
attached to a switch that has been locked only person authorized to remove tag.
out?
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 a. At least once a year in a simulated situation or by the
of the rescue service practice permit space satisfactory performance of an actual rescue.
rescues?
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.
