CWEA COLLECTIONS SYSTEM MAINTENANCE

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CWEA COLLECTIONS SYSTEM MAINTENANCE

GRADE 3 | 82 QUESTIONS WITH 100%

CORRECT ANSWER S

Question 1: A Flagger should Stand?

• On the shoulder adjacent to traffic being controlled
• In the closed lane before stopping vehicle traffic
• In the traffic lane.
• As stated in "A" or "B" above.

CORRECT ANSWER : a. On the shoulder adjacent to traffic

being controlled

Question 2: Legally responsible officials are required to report

category 1 sanitary sewer overflows?

• Within 30 days
• Before end of the day
• As soon as possible
• Within 2 hours

CORRECT ANSWER : d. Within 2 hours

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Question 3: When working in confined spaces or sewers, what

form of lighting would you use?

• Mirrors to direct the sunlight or explosion proof lighting.
• Ordinary electric lights
• Propane, Gas, or kerosene lanterns
• Special matches

CORRECT ANSWER : a. Mirrors to direct the sunlight or

explosion proof lighting.

Question 4: What can happen if water-based substances are used

to extinguish electrical fires?

• Nothing but extinguish the fire
• The fumes are not harmful
• Receive an electrical shock
• They will corrode the electrical contacts

CORRECT ANSWER : c. Receive an electrical shock

Question 5: When testing a manhole for explosive gases when

should the first tests be made?

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• After removing the manhole cover
• Before removing the manhole cover
• At any time
• After ventilation

CORRECT ANSWER : b. Before removing the manhole cover

Question 6: Atmospheric hazards encountered in manholes can

include:

• non-explosive atmospheres.
• non-toxic atmosphere.
• lack of oxygen.
• non-flammable atmospheres.

CORRECT ANSWER : c. lack of oxygen.

Question 7: When setting up to ventilate a manhole, the air inlet

should be how many feet above street level?

• 4.0
• 3.0

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• 2.0
• 1.0

CORRECT ANSWER : c. 2.0

Question 8: Which chemical may be used for odor control in a

sewer system?

• Calcium chloride
• Hydrogen peroxide
• Oxidized aluminum
• Sodium chloride

CORRECT ANSWER : b. Hydrogen peroxide

Question 9: What information must be on a warning tag attached

to a switch that has been locked out?

• Directions for removing tag.
• Name of nearest physician to call in case of emergency.
• Signature of person who locked out switch and who is the

only person authorized to remove tag.

• Time to unlock switch.