CWEA Collections
System Maintenance
Grade 3 questions and
answers.
A Flagger should Stand?
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. CORRECT ANSWER.D. As stated in "A" or "B"
above.
Legally responsible officials are 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 CORRECT ANSWER.D. Within 2 hours
When working in confined spaces or sewers, 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 CORRECT ANSWER.A. Mirrors to direct the sunlight or
explosion proof lighting.
What can happen if water-based 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 CORRECT ANSWER.c. Receive an
electrical shock
When testing a manhole for explosive 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 CORRECT ANSWER.b. Before removing the manhole cover
Atmospheric hazards encountered in manholes can include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres. CORRECT ANSWER.c. lack of oxygen.
When setting up to ventilate a manhole, the air inlet should be how many
feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0 CORRECT ANSWER.c. 2.0
Which chemical may be used for odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride CORRECT ANSWER.b. Hydrogen peroxide
What information must be on a warning tag attached to a switch that 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. CORRECT ANSWER.c. Signature of person who locked
out switch and who is the only person authorized to remove tag.
Under what conditions must each member of the rescue service practice permit
space 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
System Maintenance
Grade 3 questions and
answers.
A Flagger should Stand?
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. CORRECT ANSWER.D. As stated in "A" or "B"
above.
Legally responsible officials are 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 CORRECT ANSWER.D. Within 2 hours
When working in confined spaces or sewers, 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 CORRECT ANSWER.A. Mirrors to direct the sunlight or
explosion proof lighting.
What can happen if water-based 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 CORRECT ANSWER.c. Receive an
electrical shock
When testing a manhole for explosive 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 CORRECT ANSWER.b. Before removing the manhole cover
Atmospheric hazards encountered in manholes can include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres. CORRECT ANSWER.c. lack of oxygen.
When setting up to ventilate a manhole, the air inlet should be how many
feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0 CORRECT ANSWER.c. 2.0
Which chemical may be used for odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride CORRECT ANSWER.b. Hydrogen peroxide
What information must be on a warning tag attached to a switch that 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. CORRECT ANSWER.c. Signature of person who locked
out switch and who is the only person authorized to remove tag.
Under what conditions must each member of the rescue service practice permit
space 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
