CWEA COLLECTION SYSTEMS MAINTENANCE EXAM 2024
Why are gasoline and volatile solvents objectionable when present in a sewer? - correct answer ✔✔
They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical equipment panels, controls,
wiring or circuits unless - correct answer ✔✔ You know what you are doing, are qualified and are
authorized
What are the different areas of traffic zones? - correct answer ✔✔ Advance Warning Area, Transition
Area, Activity Area (buffer space and work space), Termination Area. Could be 4 or 5, justify your answer
on the test!
why should hydrogen sulfide be controlled? - correct answer ✔✔ to protect from corrosion and odors
Personnel entering a Permit Required Confined Space must have the following training - correct
answer✔✔ entry and rescue
To find protective gear before application of a product, you should: - correct answer ✔✔ look at the
MSDS
The gas most commonly associated with septic wastewater is - correct answer ✔✔ Hydrogen Sulfide
The lack of an unpleasant odor in a manhole, lift station or other structures does not always mean that
dangerous gases are not present because: - correct answer ✔✔ some dangerous gasses are odorless (for
example, carbon monoxide)
What are the four conditions necessary to create an explosion? - correct answer ✔✔ combustible gas,
adequate oxygen, heat and proper mixing of gas and oxygen
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what does the "transition area" mean in traffic control? - correct answer ✔✔ It moves traffic out of its
normal path
what elements should be considered to improve worker safety in High speed Temporary Traffic control
Zones? - correct answer ✔✔ Rerouting traffic around the work site, positioning of law enforcement
officers in the temporary traffic control zone, and work zone training
What key features would you need to address when developing an S.O.P. for a Lift Station failure? -
correct answer✔✔ Traffic Control Plan, By-Pass connections, and Spill containment
What tools are used with a power rodder? - correct answer ✔✔ Spring Blades
Tools used for sewer rodding include: - correct answer ✔✔ porcupine, root saw, square bar cork screw
What tool would you use to cut VCP pipe? - correct answer ✔✔ Chain Pipe Cutter
Which conditions should a gas detection device test for? - correct answer ✔✔ Hydrogen sulfide,
explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - correct answer ✔✔ Lower Explosive Limit
The oxygen level alarm normally goes off if oxygen levels are below: - correct answer ✔✔ 19.5 percent
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be
addressed as a primary safety guideline? - correct answer ✔✔ The L.O.T.O Program
What does L.O.T.O. Stand for? - correct answer ✔✔ Lock out tag out
What document would you require to be referenced when developing an S.O.p. for hazardous substace
spill clean up? - correct answer ✔✔ M.S.D.S.Powered by TCPDF (www.tcpdf.org)
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Why are gasoline and volatile solvents objectionable when present in a sewer? - correct answer ✔✔
They produce an explosion hazard
You should never attempt to install, maintain, repair or replace electrical equipment panels, controls,
wiring or circuits unless - correct answer ✔✔ You know what you are doing, are qualified and are
authorized
What are the different areas of traffic zones? - correct answer ✔✔ Advance Warning Area, Transition
Area, Activity Area (buffer space and work space), Termination Area. Could be 4 or 5, justify your answer
on the test!
why should hydrogen sulfide be controlled? - correct answer ✔✔ to protect from corrosion and odors
Personnel entering a Permit Required Confined Space must have the following training - correct
answer✔✔ entry and rescue
To find protective gear before application of a product, you should: - correct answer ✔✔ look at the
MSDS
The gas most commonly associated with septic wastewater is - correct answer ✔✔ Hydrogen Sulfide
The lack of an unpleasant odor in a manhole, lift station or other structures does not always mean that
dangerous gases are not present because: - correct answer ✔✔ some dangerous gasses are odorless (for
example, carbon monoxide)
What are the four conditions necessary to create an explosion? - correct answer ✔✔ combustible gas,
adequate oxygen, heat and proper mixing of gas and oxygen
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what does the "transition area" mean in traffic control? - correct answer ✔✔ It moves traffic out of its
normal path
what elements should be considered to improve worker safety in High speed Temporary Traffic control
Zones? - correct answer ✔✔ Rerouting traffic around the work site, positioning of law enforcement
officers in the temporary traffic control zone, and work zone training
What key features would you need to address when developing an S.O.P. for a Lift Station failure? -
correct answer✔✔ Traffic Control Plan, By-Pass connections, and Spill containment
What tools are used with a power rodder? - correct answer ✔✔ Spring Blades
Tools used for sewer rodding include: - correct answer ✔✔ porcupine, root saw, square bar cork screw
What tool would you use to cut VCP pipe? - correct answer ✔✔ Chain Pipe Cutter
Which conditions should a gas detection device test for? - correct answer ✔✔ Hydrogen sulfide,
explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - correct answer ✔✔ Lower Explosive Limit
The oxygen level alarm normally goes off if oxygen levels are below: - correct answer ✔✔ 19.5 percent
When developing an S.O.P. for scheduled maintenance of electrical equipment, what program should be
addressed as a primary safety guideline? - correct answer ✔✔ The L.O.T.O Program
What does L.O.T.O. Stand for? - correct answer ✔✔ Lock out tag out
What document would you require to be referenced when developing an S.O.p. for hazardous substace
spill clean up? - correct answer ✔✔ M.S.D.S.Powered by TCPDF (www.tcpdf.org)
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