CWEA COLLECTIONS SYSTEM
MAINTENANCE GRADE 3 QUESTIONS
WITH ANSWERS & DETAILED
RATIONALES
A Flagger should Stand?
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A. On the shoulder adjacent to traffic being controlled
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B. In the closed lane before stopping vehicle traffic
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C. In the traffic lane.
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D. As stated in "A" or "B" above. - D. As stated in "A" or "B" above.
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Legally responsible officials are required to report category 1 sanitary sewer overflow
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s?
A. Within 30 days
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B. Before end of the day
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C. As soon as possible
fc fc fc fc
D. Within 2 hours - D. Within 2 hours
fc fc fc fc fc fc fc fc
When working in confined spaces or sewers, what form of lighting would you use?
fc fc fc fc fc fc fc fc fc fc fc fc fc
A. Mirrors to direct the sunlight or explosion proof lighting.
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B. Ordinary electric lights
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C. Propane, Gas, or kerosene lanterns
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D. Special matches - A. Mirrors to direct the sunlight or explosion proof lighting.
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What can happen if water-based substances are used to extinguish electrical fires?
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a. Nothing but extinguish the fire
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b. The fumes are not harmful
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c. Receive an electrical shock
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d. They will corrode the electrical contacts - c. Receive an electrical shock
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When testing a manhole for explosive gases when should the first tests be made?
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a. After removing the manhole cover
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b. Before removing the manhole cover
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c. At any time
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d. After ventilation - b. Before removing the manhole cover
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Atmospheric hazards encountered in manholes can include: fc fc fc fc fc fc
a. non-explosive atmospheres.
fc fc fc
b. non-toxic atmosphere.
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c. lack of oxygen.
fc fc fc fc
d. non-flammable atmospheres. - c. lack of oxygen.
fc fc fc fc fc fc fc
When setting up to ventilate a manhole, the air inlet should be how many feet above
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
street level? fc
, a. 4.0 fc fc
b. 3.0 fc fc
c. 2.0 fc fc
d. 1.0 - c. 2.0
fc fc fc fc
Which chemical may be used for odor control in a sewer system?
fc fc fc fc fc fc fc fc fc fc fc
a. Calcium chloride
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b. Hydrogen peroxide
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c. Oxidized aluminum
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d. Sodium chloride - b. Hydrogen peroxide
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What information must be on a warning tag attached to a switch that has been locked
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out?
c
a. Directions for removing tag.
fc fc fc fc fc
b. Name of nearest physician to call in case of emergency.
fc fc fc fc fc fc fc fc fc fc fc
c. Signature of person who locked out switch and who is the only person authorized t
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
o remove tag.
fc fc fc
d. Time to unlock switch. -
fc fc fc fc fc
c. Signature of person who locked out switch and who is the only person authorized t
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
o remove tag.
fc fc
Under what conditions must each member of the rescue service practice permit spac
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e rescues?
fc
a. At least once a year in a simulated situation or by the satisfactory performance of a
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
n actual rescue.
fc fc fc
b. At least twice a year in simulated situations.
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c. At least once a year in simulated situation using non-
fc fc fc fc fc fc fc fc fc fc fc
representative space conditions fc fc fc
d. At least four times a year. -
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a. At least once a year in a simulated situation or by the satisfactory performance of
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an actual rescue.
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How is a permit-required space described?
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a. Has or may contain atmospheric, engulfment, design, or other serious health/safet
fc fc fc fc fc fc fc fc fc fc fc
y hazard.
fc
b. Is large enough to enter and work in and is meant for continuous occupancy.
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
c. Is large enough to enter and work in and has an unrestricted entry/exit.
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d. Never contains an atmospheric or engulfment hazard. -
fc fc fc fc fc fc fc fc
a. Has or may contain atmospheric, engulfment, design, or other serious health/safet
fc fc fc fc fc fc fc fc fc fc fc fc
y hazard.
fc
What are the three duties of personnel in a Confined Space entry?
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a. Authorized entrants, parking attendants, entry supervisors.
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b. Unauthorized entrants, attendants, entry supervisors.
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c. Authorized entrants, attendants, entry supervisors.
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d. Authorized entrants, attendants, evening supervisors -
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c. Authorized entrants, attendants, entry supervisors.
fc fc fc fc fc fc
What is an important element of hydrogen sulfide production?
fc fc fc fc fc fc fc fc
a. Flow velocity.
fc fc fc
MAINTENANCE GRADE 3 QUESTIONS
WITH ANSWERS & DETAILED
RATIONALES
A Flagger should Stand?
fc fc fc
A. On the shoulder adjacent to traffic being controlled
fc fc fc fc fc fc fc fc
B. In the closed lane before stopping vehicle traffic
fc fc fc fc fc fc fc fc
C. In the traffic lane.
fc fc fc fc
D. As stated in "A" or "B" above. - D. As stated in "A" or "B" above.
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Legally responsible officials are required to report category 1 sanitary sewer overflow
fc fc fc fc fc fc fc fc fc fc fc
s?
A. Within 30 days
fc fc fc
B. Before end of the day
fc fc fc fc fc
C. As soon as possible
fc fc fc fc
D. Within 2 hours - D. Within 2 hours
fc fc fc fc fc fc fc fc
When working in confined spaces or sewers, what form of lighting would you use?
fc fc fc fc fc fc fc fc fc fc fc fc fc
A. Mirrors to direct the sunlight or explosion proof lighting.
fc fc fc fc fc fc fc fc fc
B. Ordinary electric lights
fc fc fc
C. Propane, Gas, or kerosene lanterns
fc fc fc fc fc
D. Special matches - A. Mirrors to direct the sunlight or explosion proof lighting.
fc fc fc fc fc fc fc fc fc fc fc fc fc
What can happen if water-based substances are used to extinguish electrical fires?
fc fc fc fc fc fc fc fc fc fc fc
a. Nothing but extinguish the fire
fc fc fc fc fc fc
b. The fumes are not harmful
fc fc fc fc fc fc
c. Receive an electrical shock
fc fc fc fc fc
d. They will corrode the electrical contacts - c. Receive an electrical shock
fc fc fc fc fc fc fc fc fc fc fc fc
When testing a manhole for explosive gases when should the first tests be made?
fc fc fc fc fc fc fc fc fc fc fc fc fc
a. After removing the manhole cover
fc fc fc fc fc fc
b. Before removing the manhole cover
fc fc fc fc fc fc
c. At any time
fc fc fc fc
d. After ventilation - b. Before removing the manhole cover
fc fc fc fc fc fc fc fc fc
Atmospheric hazards encountered in manholes can include: fc fc fc fc fc fc
a. non-explosive atmospheres.
fc fc fc
b. non-toxic atmosphere.
fc fc fc
c. lack of oxygen.
fc fc fc fc
d. non-flammable atmospheres. - c. lack of oxygen.
fc fc fc fc fc fc fc
When setting up to ventilate a manhole, the air inlet should be how many feet above
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
street level? fc
, a. 4.0 fc fc
b. 3.0 fc fc
c. 2.0 fc fc
d. 1.0 - c. 2.0
fc fc fc fc
Which chemical may be used for odor control in a sewer system?
fc fc fc fc fc fc fc fc fc fc fc
a. Calcium chloride
fc fc fc
b. Hydrogen peroxide
fc fc fc
c. Oxidized aluminum
fc fc fc
d. Sodium chloride - b. Hydrogen peroxide
fc fc fc fc fc fc
What information must be on a warning tag attached to a switch that has been locked
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc f
out?
c
a. Directions for removing tag.
fc fc fc fc fc
b. Name of nearest physician to call in case of emergency.
fc fc fc fc fc fc fc fc fc fc fc
c. Signature of person who locked out switch and who is the only person authorized t
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
o remove tag.
fc fc fc
d. Time to unlock switch. -
fc fc fc fc fc
c. Signature of person who locked out switch and who is the only person authorized t
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
o remove tag.
fc fc
Under what conditions must each member of the rescue service practice permit spac
fc fc fc fc fc fc fc fc fc fc fc fc
e rescues?
fc
a. At least once a year in a simulated situation or by the satisfactory performance of a
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
n actual rescue.
fc fc fc
b. At least twice a year in simulated situations.
fc fc fc fc fc fc fc fc
c. At least once a year in simulated situation using non-
fc fc fc fc fc fc fc fc fc fc fc
representative space conditions fc fc fc
d. At least four times a year. -
fc fc fc fc fc fc fc
a. At least once a year in a simulated situation or by the satisfactory performance of
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
an actual rescue.
fc fc
How is a permit-required space described?
fc fc fc fc fc
a. Has or may contain atmospheric, engulfment, design, or other serious health/safet
fc fc fc fc fc fc fc fc fc fc fc
y hazard.
fc
b. Is large enough to enter and work in and is meant for continuous occupancy.
fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
c. Is large enough to enter and work in and has an unrestricted entry/exit.
fc fc fc fc fc fc fc fc fc fc fc fc fc fc
d. Never contains an atmospheric or engulfment hazard. -
fc fc fc fc fc fc fc fc
a. Has or may contain atmospheric, engulfment, design, or other serious health/safet
fc fc fc fc fc fc fc fc fc fc fc fc
y hazard.
fc
What are the three duties of personnel in a Confined Space entry?
fc fc fc fc fc fc fc fc fc fc fc
a. Authorized entrants, parking attendants, entry supervisors.
fc fc fc fc fc fc fc
b. Unauthorized entrants, attendants, entry supervisors.
fc fc fc fc fc fc
c. Authorized entrants, attendants, entry supervisors.
fc fc fc fc fc fc
d. Authorized entrants, attendants, evening supervisors -
fc fc fc fc fc fc
c. Authorized entrants, attendants, entry supervisors.
fc fc fc fc fc fc
What is an important element of hydrogen sulfide production?
fc fc fc fc fc fc fc fc
a. Flow velocity.
fc fc fc
