CWEA Collections System Maintenance
Grade 3 exam Questions With Complete
Solutions
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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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
d. At least four times a year. - CORRECT ANSWERS a. At least once a year in a simulated
situation or by the satisfactory performance of an actual rescue.
How is a permit-required space described?
a. Has or may contain atmospheric, engulfment, design, or other serious health/safety hazard.
b. Is large enough to enter and work in and is meant for continuous occupancy.
c. Is large enough to enter and work in and has an unrestricted entry/exit.
d. Never contains an atmospheric or engulfment hazard. - CORRECT ANSWERS a. Has or may
contain atmospheric, engulfment, design, or other serious health/safety hazard.
What are the three duties of personnel in a Confined Space entry?
a. Authorized entrants, parking attendants, entry supervisors.
b. Unauthorized entrants, attendants, entry supervisors.
Grade 3 exam Questions With Complete
Solutions
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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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 ANSWERS 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
d. At least four times a year. - CORRECT ANSWERS a. At least once a year in a simulated
situation or by the satisfactory performance of an actual rescue.
How is a permit-required space described?
a. Has or may contain atmospheric, engulfment, design, or other serious health/safety hazard.
b. Is large enough to enter and work in and is meant for continuous occupancy.
c. Is large enough to enter and work in and has an unrestricted entry/exit.
d. Never contains an atmospheric or engulfment hazard. - CORRECT ANSWERS a. Has or may
contain atmospheric, engulfment, design, or other serious health/safety hazard.
What are the three duties of personnel in a Confined Space entry?
a. Authorized entrants, parking attendants, entry supervisors.
b. Unauthorized entrants, attendants, entry supervisors.
