UPDATED: CWEA Collection Systems
Maintenance 2025|Complete Exam Test
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Terms in this set (140)
Why are gasoline and They produce an explosion hazard
volatile solvents
objectionable when
present in a sewer?
You should never attempt You know what you are doing, are qualified and are
to install, maintain, repair authorized
or replace electrical
equipment panels,
controls, wiring or circuits
unless
Advance Warning Area, Transition Area, Activity
What are the different Area (buffer space and work space), Termination
areas of traffic zones? Area. Could be 4 or 5, justify your answer on the
test!
why should hydrogen to protect from corrosion and odors
sulfide be controlled?
Personnel entering a entry and rescue
Permit Required
Confined Space must
have the following
training
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To find protective gear look at the MSDS
before application of a
product, you should:
The gas most commonly Hydrogen Sulfide
associated with septic
wastewater is
The lack of an unpleasant some dangerous gasses are odorless (for example,
odor in a manhole, lift carbon monoxide)
station or other
structures does not
always mean that
dangerous gases are not
present because:
What are the four combustible gas, adequate oxygen, heat and
conditions necessary to proper mixing of gas and oxygen
create an explosion?
what does the "transition It moves traffic out of its normal path
area" mean in traffic
control?
what elements should be Rerouting traffic around the work site, positioning of
considered to improve law enforcement officers in the temporary traffic
worker safety in High control zone, and work zone training
speed Temporary Traffic
control Zones?
What key features would Traffic Control Plan, By-Pass connections, and Spill
you need to address containment
when developing an
S.O.P. for a Lift Station
failure?
What tools are used with Spring Blades
a power rodder?
Tools used for sewer porcupine, root saw, square bar cork screw
rodding include:
What tool would you use Chain Pipe Cutter
to cut VCP pipe?
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Which conditions should Hydrogen sulfide, explosive/flammable gases,
a gas detection device oxygen
test for?
What does "LEL" mean on Lower Explosive Limit
a gas detection meter?
The oxygen level alarm 19.5 percent
normally goes off if
oxygen levels are below:
When developing an The L.O.T.O Program
S.O.P. for scheduled
maintenance of electrical
equipment, what
program should be
addressed as a primary
safety guideline?
What does L.O.T.O. Stand Lock out tag out
for?
What document would M.S.D.S.
you require to be
referenced when
developing an S.O.p. for
hazardous substace spill
clean up?
in developing an S.O.P. Placement of the blower and a weather forecast
for air monitoring in a
Permit Required
Confined Space you
would include what two
factors?
According to the State SSMP (Sewer System Management Plan)
Water Resources Control
Board Order No. 2006-
003-DWQ, each enrollee
must develop and
implement a system-
specific:
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