CWEA Collections Grade 2 Practice Test
1. Why are gasoline and volatile solvents objectionable when present in a sew-
er?
Answer They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or replace
electrical equipment unless
Answer You know what you are doing, are qualified, and are authorized.
3. How many different areas of traffic zones are there when working in road-
ways?
Answer Five
4. Why should hydrogen sulfide be controlled?
Answer To protect sewers and structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the follow-
ing training
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20
,Answer Entry and rescue procedures
6. To find proper protective gear before application of a product, you would
Answer Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is
Answer Hydrogen Sulfide (H2S)
8. The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because
Answer Some dangerous gases have no odor
9. What four conditions are necessary to create an explosion?
Answer Combustible gas, ade- quate oxygen, suflcient heat, and proper mixing of gas and oxygen.
10. What does "transition area" mean in traffic control?
Answer Moves traflc out of its normal path
11. The term "transition area" is one component of a
Answer Traflc Control Zone
12. What elements should be considered to improve worker safety in High
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20
, Speed Temporary Traffic Control Zones?
Answer Rerouting traflc around the work site, positioning of law enforcement oflcers in the temporary
traflc control zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P. for
Lift Station failure?
Answer Traflc control plan, by-pass connections, and spill containment.
14. "Spring Blades" are a type of tool used with
Answer Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for
Answer Sewer rodding
16. What tool would you use to cut VCP pipe?
Answer Chain pipe cutter
17. Which conditions should a gas detection device test for?
Answer Hydrogen Sulfide, explo- sive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter?
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20
1. Why are gasoline and volatile solvents objectionable when present in a sew-
er?
Answer They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or replace
electrical equipment unless
Answer You know what you are doing, are qualified, and are authorized.
3. How many different areas of traffic zones are there when working in road-
ways?
Answer Five
4. Why should hydrogen sulfide be controlled?
Answer To protect sewers and structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the follow-
ing training
1/
20
,Answer Entry and rescue procedures
6. To find proper protective gear before application of a product, you would
Answer Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is
Answer Hydrogen Sulfide (H2S)
8. The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because
Answer Some dangerous gases have no odor
9. What four conditions are necessary to create an explosion?
Answer Combustible gas, ade- quate oxygen, suflcient heat, and proper mixing of gas and oxygen.
10. What does "transition area" mean in traffic control?
Answer Moves traflc out of its normal path
11. The term "transition area" is one component of a
Answer Traflc Control Zone
12. What elements should be considered to improve worker safety in High
2/
20
, Speed Temporary Traffic Control Zones?
Answer Rerouting traflc around the work site, positioning of law enforcement oflcers in the temporary
traflc control zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P. for
Lift Station failure?
Answer Traflc control plan, by-pass connections, and spill containment.
14. "Spring Blades" are a type of tool used with
Answer Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used for
Answer Sewer rodding
16. What tool would you use to cut VCP pipe?
Answer Chain pipe cutter
17. Which conditions should a gas detection device test for?
Answer Hydrogen Sulfide, explo- sive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter?
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20
