CWEA Collections Grade 2 Practice Test
1.Why are gasoline and volatile solvents objectionable when present in
a sewer?
ANS They produce an explosion hazard
2.You should never attempt to install, troubleshoot, maintain, repair, or
replace electrical equipment unless
ANS 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?
ANS Five
4.Why should hydrogen sulfide be controlled?
ANS To protect sewers and structures from corrosion
5.Personnel entering a Permit Required Confined Space must have the
follow- ing training
ANS Entry and rescue procedures
6.To find proper protective gear before application of a product, you would
ANS-
Look at the MSDS (Material Safety Data Sheet)
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,7.The gas most commonly associated with septic wastewater is
ANS Hydrogen Sulfide (H2S)
8.The lack of an unpleasant odor in a structure does not always mean
that dangerous gases are not present because
ANS Some dangerous gases have no odor
9.What four conditions are necessary to create an explosion?
ANS Combustible gas, adequate oxygen, sufficient heat, and proper
mixing of gas and oxygen.
10.What does "transition area" mean in traffic control?
ANS Moves traffic out of its normal path
11.The term "transition area" is one component of a
ANS Traffic Control Zone
12.What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones?
ANS Rerouting traffic around the work site, positioning of law
enforcement officers in the temporary traffic 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?
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, ANS Traffic control plan, by-pass connections, and spill con- tainment.
14."Spring Blades" are a type of tool used with
ANS Power Rodder
15.Porcupine, Root Saw, and a Square Bar Cork Screw are all tools
used for
ANS Sewer rodding
16.What tool would you use to cut VCP pipe?
ANS Chain pipe cutter
17.Which conditions should a gas detection device test for?
ANS Hydrogen Sulfide, explosive/flammable gases, oxygen.
18.What does "LEL" mean on a gas detection meter?
ANS Lower explosive limit
19.The oxygen level alarm in a gas detection meter is normally set to go
off at oxygen levels below
ANS 19.5%
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1.Why are gasoline and volatile solvents objectionable when present in
a sewer?
ANS They produce an explosion hazard
2.You should never attempt to install, troubleshoot, maintain, repair, or
replace electrical equipment unless
ANS 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?
ANS Five
4.Why should hydrogen sulfide be controlled?
ANS To protect sewers and structures from corrosion
5.Personnel entering a Permit Required Confined Space must have the
follow- ing training
ANS Entry and rescue procedures
6.To find proper protective gear before application of a product, you would
ANS-
Look at the MSDS (Material Safety Data Sheet)
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18
,7.The gas most commonly associated with septic wastewater is
ANS Hydrogen Sulfide (H2S)
8.The lack of an unpleasant odor in a structure does not always mean
that dangerous gases are not present because
ANS Some dangerous gases have no odor
9.What four conditions are necessary to create an explosion?
ANS Combustible gas, adequate oxygen, sufficient heat, and proper
mixing of gas and oxygen.
10.What does "transition area" mean in traffic control?
ANS Moves traffic out of its normal path
11.The term "transition area" is one component of a
ANS Traffic Control Zone
12.What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones?
ANS Rerouting traffic around the work site, positioning of law
enforcement officers in the temporary traffic 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?
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18
, ANS Traffic control plan, by-pass connections, and spill con- tainment.
14."Spring Blades" are a type of tool used with
ANS Power Rodder
15.Porcupine, Root Saw, and a Square Bar Cork Screw are all tools
used for
ANS Sewer rodding
16.What tool would you use to cut VCP pipe?
ANS Chain pipe cutter
17.Which conditions should a gas detection device test for?
ANS Hydrogen Sulfide, explosive/flammable gases, oxygen.
18.What does "LEL" mean on a gas detection meter?
ANS Lower explosive limit
19.The oxygen level alarm in a gas detection meter is normally set to go
off at oxygen levels below
ANS 19.5%
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