CWEA COLLECTION SYSTEMS MAINTENANCE EXAM
LATEST 2024/2025 ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS WELL VERIFIED
|GRADED A+
Why are gasoline and volatile solvents objectionable when present in a sewer? -
ANSWER-They produce an explosion hazard
The gas most commonly associated with septic wastewater is - 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: - ANSWER-some
dangerous gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? - ANSWER-
combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen
what does the "transition area" mean in traffic control? - ANSWER-It moves traffic
out of its normal path
,You should never attempt to install, maintain, repair or replace electrical
equipment panels, controls, wiring or circuits unless - ANSWER-You know what
you are doing, are qualified and are authorized
What are the different areas of traffic zones? - 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? - ANSWER-to protect from corrosion
and odors
Personnel entering a Permit Required Confined Space must have the following
training - ANSWER-entry and rescue
To find protective gear before application of a product, you should: - ANSWER-
look at the MSDS
what elements should be considered to improve worker safety in High speed
Temporary Traffic control Zones? - 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? - ANSWER-Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - ANSWER-Spring Blades
, Tools used for sewer rodding include: - ANSWER-porcupine, root saw, square bar
cork screw
What tool would you use to cut VCP pipe? - ANSWER-Chain Pipe Cutter
Which conditions should a gas detection device test for? - ANSWER-Hydrogen
sulfide, explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - ANSWER-Lower Explosive
Limit
The oxygen level alarm normally goes off if oxygen levels are below: - 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? - ANSWER-The
L.O.T.O Program
What does L.O.T.O. Stand for? - 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? - ANSWER-M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit Required Confined Space
you would include what two factors? - ANSWER-Placement of the blower and a
weather forecast
LATEST 2024/2025 ACTUAL QUESTIONS AND
CORRECT DETAILED ANSWERS WELL VERIFIED
|GRADED A+
Why are gasoline and volatile solvents objectionable when present in a sewer? -
ANSWER-They produce an explosion hazard
The gas most commonly associated with septic wastewater is - 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: - ANSWER-some
dangerous gasses are odorless (for example, carbon monoxide)
What are the four conditions necessary to create an explosion? - ANSWER-
combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen
what does the "transition area" mean in traffic control? - ANSWER-It moves traffic
out of its normal path
,You should never attempt to install, maintain, repair or replace electrical
equipment panels, controls, wiring or circuits unless - ANSWER-You know what
you are doing, are qualified and are authorized
What are the different areas of traffic zones? - 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? - ANSWER-to protect from corrosion
and odors
Personnel entering a Permit Required Confined Space must have the following
training - ANSWER-entry and rescue
To find protective gear before application of a product, you should: - ANSWER-
look at the MSDS
what elements should be considered to improve worker safety in High speed
Temporary Traffic control Zones? - 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? - ANSWER-Traffic Control Plan, By-Pass connections, and Spill
containment
What tools are used with a power rodder? - ANSWER-Spring Blades
, Tools used for sewer rodding include: - ANSWER-porcupine, root saw, square bar
cork screw
What tool would you use to cut VCP pipe? - ANSWER-Chain Pipe Cutter
Which conditions should a gas detection device test for? - ANSWER-Hydrogen
sulfide, explosive/flammable gases, oxygen
What does "LEL" mean on a gas detection meter? - ANSWER-Lower Explosive
Limit
The oxygen level alarm normally goes off if oxygen levels are below: - 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? - ANSWER-The
L.O.T.O Program
What does L.O.T.O. Stand for? - 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? - ANSWER-M.S.D.S.
in developing an S.O.P. for air monitoring in a Permit Required Confined Space
you would include what two factors? - ANSWER-Placement of the blower and a
weather forecast
