CWEA Collection Systems Maintenance Final Exam
|Complete Solution| Questions and Answers (2024 /
2025) | 100% Correct Verified Answers A+
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
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
This study source was downloaded by 100000888206670 from CourseHero.com on 08-28-2024 03:39:10 GMT -05:00
https://www.coursehero.com/file/218297170/CWEA-Collection-Systems-Maintenance-complete-update-2023pdf/
, failure? CORRECT ANSWER Traffic Control Plan, ByCORRECT ANSWERPass
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
This study source was downloaded by 100000888206670 from CourseHero.com on 08-28-2024 03:39:10 GMT -05:00
https://www.coursehero.com/file/218297170/CWEA-Collection-Systems-Maintenance-complete-update-2023pdf/
|Complete Solution| Questions and Answers (2024 /
2025) | 100% Correct Verified Answers A+
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
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
This study source was downloaded by 100000888206670 from CourseHero.com on 08-28-2024 03:39:10 GMT -05:00
https://www.coursehero.com/file/218297170/CWEA-Collection-Systems-Maintenance-complete-update-2023pdf/
, failure? CORRECT ANSWER Traffic Control Plan, ByCORRECT ANSWERPass
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
This study source was downloaded by 100000888206670 from CourseHero.com on 08-28-2024 03:39:10 GMT -05:00
https://www.coursehero.com/file/218297170/CWEA-Collection-Systems-Maintenance-complete-update-2023pdf/
