CWEA COLLECTIONS SYSTEM
MAINTENANCE GRADE 3 FINAL PAPER
2026 FULL 82 QUESTIONS WITH
ACCURATE ANSWERS GRADED A+
⩥ 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
,⩥ 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
⩥ 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.
MAINTENANCE GRADE 3 FINAL PAPER
2026 FULL 82 QUESTIONS WITH
ACCURATE ANSWERS GRADED A+
⩥ 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
,⩥ 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
⩥ 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.
