CWEA Collections System Maintenance Grade 3
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Terms in this set (83)
CWEA Collections System CWEA Collections System Maintenance Grade 3
Maintenance Grade 3 Exam Exam
CWEA Collections System Maintenance Grade 3
CWEA Collections System Exam
Maintenance Grade 3 Exam
When testing a manhole for explosive b. Before removing the manhole cover
gases 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
,Legally responsible officials are D. Within 2 hours
required to 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 A. Mirrors to direct the sunlight or explosion proof
sewers, what form of lighting would lighting.
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 c. Receive an electrical shock
substances 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
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.
, 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 c. 2.0
manhole, the 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 b. Hydrogen peroxide
odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a c. Signature of person who locked out switch and
warning tag attached to a switch that who is the only person authorized to remove tag.
has been locked 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.
Exam (Latest2026 Update) Questions and Verified
Answers | 100% Correct | Grade A+
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (83)
CWEA Collections System CWEA Collections System Maintenance Grade 3
Maintenance Grade 3 Exam Exam
CWEA Collections System Maintenance Grade 3
CWEA Collections System Exam
Maintenance Grade 3 Exam
When testing a manhole for explosive b. Before removing the manhole cover
gases 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
,Legally responsible officials are D. Within 2 hours
required to 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 A. Mirrors to direct the sunlight or explosion proof
sewers, what form of lighting would lighting.
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 c. Receive an electrical shock
substances 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
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.
, 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 c. 2.0
manhole, the 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 b. Hydrogen peroxide
odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
What information must be on a c. Signature of person who locked out switch and
warning tag attached to a switch that who is the only person authorized to remove tag.
has been locked 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.
