CWEA Collections System Maintenance Grade 3
Questions with Correct Answers
1. 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.
Answer> D. As stated in "A" or "B" above.
2. 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
Answer> D. Within 2 hours
3. 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
Answer> A. Mirrors to direct the sunlight or explosion proof lighting.
4. What can happen if water-based substances are used to extinguish electri- cal
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
Answer> c. Receive an electrical shock
,5. 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
Answer> b. Before removing the manhole cover
6. Atmospheric hazards encountered in manholes can include
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres.
Answer> c. lack of oxygen.
7. 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
Answer> c. 2.0
8. Which chemical may be used for odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
Answer> b. Hydrogen peroxide
9. 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.
Questions with Correct Answers
1. 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.
Answer> D. As stated in "A" or "B" above.
2. 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
Answer> D. Within 2 hours
3. 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
Answer> A. Mirrors to direct the sunlight or explosion proof lighting.
4. What can happen if water-based substances are used to extinguish electri- cal
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
Answer> c. Receive an electrical shock
,5. 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
Answer> b. Before removing the manhole cover
6. Atmospheric hazards encountered in manholes can include
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres.
Answer> c. lack of oxygen.
7. 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
Answer> c. 2.0
8. Which chemical may be used for odor control in a sewer system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
d. Sodium chloride
Answer> b. Hydrogen peroxide
9. 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.
