CWEA Collection Systems Maintenance;Practice Questions and Answers for CWEA Grade 1 and 2 Tests Solved
Question : Why are gasoline and volatile solvents
objectionable when present in a sewer?
Correct answer: They produce an explosion hazard
Question : 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
Question : 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!
Question : why should hydrogen sulfide be controlled?
Correct answer: to protect from corrosion and odors
Question : Personnel entering a Permit Required Confined
Space must have the following training
Correct answer: entry and rescue
Question : To find protective gear before application of a
product, you should:
Correct answer: look at the MSDS
Question : The gas most commonly associated with septic
wastewater is
Correct answer: Hydrogen Sulfide
Question : 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)
Question : What are the four conditions necessary to create an
explosion?
Correct answer: combustible gas, adequate oxygen, heat and
proper mixing of gas and oxygen
Question : what does the "transition area" mean in traffic
control?
Correct answer: It moves traffic out of its normal path
Question : 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
Question : 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
Question : What tools are used with a power rodder?
Correct answer: Spring Blades
Question : Tools used for sewer rodding include:
Correct answer: porcupine, root saw, square bar cork screw
Question : What tool would you use to cut VCP pipe?
Correct answer: Chain Pipe Cutter
Question : Which conditions should a gas detection device
test for?
Correct answer: Hydrogen sulfide, explosive/flammable
gases, oxygen