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Cwea collections grade 3 exam update questions and verified answers 100% correct grade a
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Cwea collections grade 3 exam update questions and verified answers 100% correct grade a
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CWEA Collections System Maintenance Grade 31. 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.: 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: 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: A. Mirrors to direct the sunlight or explosion proof lighting.
4. 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: 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: 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.: 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: 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: 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.: c. Signature of person who locked out switch and who
is the only person authorized to remove tag.
10. 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 perfor-
mance 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.: a. At least once a year in a simulated situation or by
the satisfactory performance of an actual rescue.
11. 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 occupan-
cy.
c. Is large enough to enter and work in and has an unrestricted entry/exit.
, .
d. Never contains an atmospheric or engulfment hazard.: a. Has or may contain
atmospheric, engulfment, design, or other serious health/safety hazard.
12. 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.
c. Authorized entrants, attendants, entry supervisors.
d. Authorized entrants, attendants, evening supervisors: c. Authorized
entrants, attendants, entry supervisors.
13 What is an important element of hydrogen sulfide production? a.
Flow velocity.
b. Pipe materials.
c. Amount of odor present.
d. Amount of inorganic materials.: a. Flow velocity.
14. Which of the following is the most common factor leading to the
generation of hydrogen sulfide in sewers? a. Anaerobic conditions.
b. Constantly high velocity of flow in sewers.
c. Low concentrations of ferrous sulfide.
d. Presence of highly soluble fats and oils.: a. Anaerobic conditions.
15. A category 2 SSO is:
a. any SSO which does not reach surface waters.
b. not reportable.
c. preventable.
d. any SSO which is not category 1.: d. any SSO which is not category 1.
16. Which tool would you use for cleaning under a pipe, or hard dirt near a
pipe?
a. Miner's pick.
b. Wrench.
c. Drill.
d. Hammer.: a. Miner's pick.
17. A torque wrench is used to tighten which device?
a. Pipe clamp.
b. Drill chuck.
c. Light bulb.
d. Sheet metal screw: a. Pipe clamp.
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