CWEA Collection Systems Maintenance exam |\ |\ |\ |\
with correct answers
|\ |\ |\
Why are gasoline and volatile solvents objectionable
|\ |\ |\ |\ |\ |\ |\
when present in a sewer? - CORRECT ANSWERS ✔✔They
|\ |\ |\ |\ |\ |\ |\ |\ |\
produce an explosion hazard |\ |\ |\
You should never attempt to install, maintain, repair or
|\ |\ |\ |\ |\ |\ |\ |\ |\
replace electrical equipment panels, controls, wiring or
|\ |\ |\ |\ |\ |\ |\
circuits unless - CORRECT ANSWERS ✔✔You know what
|\ |\ |\ |\ |\ |\ |\ |\
you are doing, are qualified and are authorized
|\ |\ |\ |\ |\ |\ |\
What are the different areas of traffic zones? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔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
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔to protect from corrosion and odors |\ |\ |\ |\ |\ |\
Personnel entering a Permit Required Confined Space
|\ |\ |\ |\ |\ |\ |\
must have the following training - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔entry and rescue |\ |\
,To find protective gear before application of a product,
|\ |\ |\ |\ |\ |\ |\ |\ |\
you should: - CORRECT ANSWERS ✔✔look at the MSDS
|\ |\ |\ |\ |\ |\ |\ |\
The gas most commonly associated with septic
|\ |\ |\ |\ |\ |\ |\
wastewater is - CORRECT ANSWERS ✔✔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 ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔some dangerous gasses are odorless (for example,
|\ |\ |\ |\ |\ |\ |\
carbon monoxide) |\
What are the four conditions necessary to create an
|\ |\ |\ |\ |\ |\ |\ |\ |\
explosion? - CORRECT ANSWERS ✔✔combustible gas, |\ |\ |\ |\ |\ |\
adequate oxygen, heat and proper mixing of gas and
|\ |\ |\ |\ |\ |\ |\ |\ |\
oxygen
what does the "transition area" mean in traffic control? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔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 ANSWERS ✔✔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
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Traffic Control Plan, By-Pass connections,
|\ |\ |\ |\ |\ |\
and Spill containment
|\ |\
What tools are used with a power rodder? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Spring Blades |\ |\
Tools used for sewer rodding include: - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔porcupine, root saw, square bar cork screw
|\ |\ |\ |\ |\ |\ |\
What tool would you use to cut VCP pipe? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Chain Pipe Cutter |\ |\ |\
Which conditions should a gas detection device test for? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Hydrogen sulfide,
|\ |\ |\
explosive/flammable gases, oxygen
|\ |\ |\
What does "LEL" mean on a gas detection meter? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Lower Explosive Limit
|\ |\ |\ |\
The oxygen level alarm normally goes off if oxygen levels
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
are below: - CORRECT ANSWERS ✔✔19.5 percent
|\ |\ |\ |\ |\ |\
with correct answers
|\ |\ |\
Why are gasoline and volatile solvents objectionable
|\ |\ |\ |\ |\ |\ |\
when present in a sewer? - CORRECT ANSWERS ✔✔They
|\ |\ |\ |\ |\ |\ |\ |\ |\
produce an explosion hazard |\ |\ |\
You should never attempt to install, maintain, repair or
|\ |\ |\ |\ |\ |\ |\ |\ |\
replace electrical equipment panels, controls, wiring or
|\ |\ |\ |\ |\ |\ |\
circuits unless - CORRECT ANSWERS ✔✔You know what
|\ |\ |\ |\ |\ |\ |\ |\
you are doing, are qualified and are authorized
|\ |\ |\ |\ |\ |\ |\
What are the different areas of traffic zones? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔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
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔to protect from corrosion and odors |\ |\ |\ |\ |\ |\
Personnel entering a Permit Required Confined Space
|\ |\ |\ |\ |\ |\ |\
must have the following training - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔entry and rescue |\ |\
,To find protective gear before application of a product,
|\ |\ |\ |\ |\ |\ |\ |\ |\
you should: - CORRECT ANSWERS ✔✔look at the MSDS
|\ |\ |\ |\ |\ |\ |\ |\
The gas most commonly associated with septic
|\ |\ |\ |\ |\ |\ |\
wastewater is - CORRECT ANSWERS ✔✔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 ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔some dangerous gasses are odorless (for example,
|\ |\ |\ |\ |\ |\ |\
carbon monoxide) |\
What are the four conditions necessary to create an
|\ |\ |\ |\ |\ |\ |\ |\ |\
explosion? - CORRECT ANSWERS ✔✔combustible gas, |\ |\ |\ |\ |\ |\
adequate oxygen, heat and proper mixing of gas and
|\ |\ |\ |\ |\ |\ |\ |\ |\
oxygen
what does the "transition area" mean in traffic control? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔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 ANSWERS ✔✔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
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Traffic Control Plan, By-Pass connections,
|\ |\ |\ |\ |\ |\
and Spill containment
|\ |\
What tools are used with a power rodder? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Spring Blades |\ |\
Tools used for sewer rodding include: - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔porcupine, root saw, square bar cork screw
|\ |\ |\ |\ |\ |\ |\
What tool would you use to cut VCP pipe? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔Chain Pipe Cutter |\ |\ |\
Which conditions should a gas detection device test for? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Hydrogen sulfide,
|\ |\ |\
explosive/flammable gases, oxygen
|\ |\ |\
What does "LEL" mean on a gas detection meter? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Lower Explosive Limit
|\ |\ |\ |\
The oxygen level alarm normally goes off if oxygen levels
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
are below: - CORRECT ANSWERS ✔✔19.5 percent
|\ |\ |\ |\ |\ |\
