CWEA Collections System Maintenance Grade 3 82 Questions with 100% Correct Latest Version.

CWEA Collections System Maintenance Grade 3 | 8
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2 Questions with 100% Correct Latest Version.
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1. 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.
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2. Legally responsible officials are required to report category 1 sanitary sewer ov
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erflows?
A. Within 30 days t t


B. Before end of the day t t t t


C. As soon as possible t t t


D. Within 2 hours - ✅✅✅D. Within 2 hours
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3. When working in confined spaces or sewers, what form of lighting would you u
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se?
A. Mirrors to direct the sunlight or explosion proof lighting.
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B. Ordinary electric lights t t


C. Propane, Gas, or kerosene lanterns t t t t


D. Special matches - t t



✅✅✅A. Mirrors to direct the sunlight or explosion proof lighting.
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4. What can happen if water-
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based substances are used to extinguish electrical fires?
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a. Nothing but extinguish the fire t t t t t


b. The fumes are not harmful t t t t t


c. Receive an electrical shock t t t t


d. They will corrode the electrical contacts - t t t t t t



✅✅✅c. Receive an electrical shock t t t t t




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, 5. When testing a manhole for explosive gases when should the first tests be mad
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e?
a. After removing the manhole cover t t t t t


b. Before removing the manhole cover t t t t t


c. At any time t t t


d. After ventilation - t t



✅✅✅b. Before removing the manhole cover
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6. Atmospheric hazards encountered in manholes can include:
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a. non-explosive atmospheres. t t


b. non-toxic atmosphere. t t


c. lack of oxygen. t t t



d. non-flammable atmospheres. - ✅✅✅c. lack of oxygen. t t t t t t




7. When setting up to ventilate a manhole, the air inlet should be how many feet a
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bove street level?
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a. 4.0 t


b. 3.0 t


c. 2.0 t



d. 1.0 - ✅✅✅c. 2.0 t t t




8. Which chemical may be used for odor control in a sewer system?
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a. Calcium chloride t t


b. Hydrogen peroxide t t


c. Oxidized aluminum t t



d. Sodium chloride - ✅✅✅b. Hydrogen peroxide t t t t t




9. What information must be on a warning tag attached to a switch that has been l
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ocked out? t




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, a. Directions for removing tag. t t t t


b. Name of nearest physician to call in case of emergency.
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c. Signature of person who locked out switch and who is the only p
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erson authorized to remove tag. t t t t t


d. Time to unlock switch. - t t t t


✅✅✅c. Signature of person who locked out switch and wh
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o is the only person authorized to remove tag.
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10.Under what conditions must each member of the rescue service practice perm
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it space rescues?
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a. At least once a year in a simulated situation or by the satisfactor
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y performance of an actual rescue.
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b. At least twice a year in simulated situations.
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c. At least once a year in simulated situation using non-
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representative space conditions t t t


d. At least four times a year. - t t t t t t



✅✅✅a. At least once a year in a simulated situation or by th
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e satisfactory performance of an actual rescue.
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11.How is a permit-required space described?
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a. Has or may contain atmospheric, engulfment, design, or other s
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erious health/safety hazard. t t


b. Is large enough to enter and work in and is meant for continuous
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occupancy. t t


c. Is large enough to enter and work in and has an unrestricted ent
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ry/exit. t


d. Never contains an atmospheric or engulfment hazard. - t t t t t t t



✅✅✅a. Has or may contain atmospheric, engulfment, desi
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gn, or other serious health/safety hazard.
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12.What are the three duties of personnel in a Confined Space entry?
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a. Authorized entrants, parking attendants, entry supervisors. t t t t t t




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