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CWEA Collection Systems Maintenance WITH 100- SURE ANSWERS
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CWEA Collection Systems Maintenance WITH 100- SURE ANSWERS
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EUNICECWEA Collection Systems Maintenance
WITH 100% SURE ANSWERS
Terms in this set (140)
Why are gasoline and volatile solvents They produce an explosion hazard
objectionable when present in a sewer?
You should never attempt to install, You know what you are doing, are qualified and are authorized
maintain, repair or replace electrical
equipment panels, controls, wiring or
circuits unless
What are the different areas of traffic Advance Warning Area, Transition Area, Activity Area (buffer space and work space),
zones? Termination Area. Could be 4 or 5, justify your answer on the test!
why should hydrogen sulfide be to protect from corrosion and odors
controlled?
Personnel entering a Permit Required entry and rescue
Confined Space must have the following
training
To find protective gear before application look at the MSDS
of a product, you should:
The gas most commonly associated with Hydrogen Sulfide
septic wastewater is
The lack of an unpleasant odor in a some dangerous gasses are odorless (for example, carbon monoxide)
manhole, lift station or other structures
does not always mean that dangerous
gases are not present because:
What are the four conditions necessary to combustible gas, adequate oxygen, heat and proper mixing of gas and oxygen
create an explosion?
what does the "transition area" mean in It moves traffic out of its normal path
traffic control?
what elements should be considered to Rerouting traffic around the work site, positioning of law enforcement officers in the
improve worker safety in High speed temporary traffic control zone, and work zone training
Temporary Traffic control Zones?
1/6
, What key features would you need to Traffic Control Plan, By-Pass connections, and Spill containment
address when developing an S.O.P. for a Lift
Station failure?
What tools are used with a power rodder? Spring Blades
Tools used for sewer rodding include: porcupine, root saw, square bar cork screw
What tool would you use to cut VCP pipe? Chain Pipe Cutter
Which conditions should a gas detection Hydrogen sulfide, explosive/flammable gases, oxygen
device test for?
What does "LEL" mean on a gas detection Lower Explosive Limit
meter?
The oxygen level alarm normally goes off if 19.5 percent
oxygen levels are below:
When developing an S.O.P. for scheduled The L.O.T.O Program
maintenance of electrical equipment, what
program should be addressed as a primary
safety guideline?
What does L.O.T.O. Stand for? Lock out tag out
What document would you require to be M.S.D.S.
referenced when developing an S.O.p. for
hazardous substace spill clean up?
in developing an S.O.P. for air monitoring in Placement of the blower and a weather forecast
a Permit Required Confined Space you
would include what two factors?
According to the State Water Resources SSMP (Sewer System Management Plan)
Control Board Order No. 2006-003-DWQ,
each enrollee must develop and implement
a system-specific:
How long do you have to report a 2 hours
category 1 SSO?
To report in the Statewide SSO Data-base Using the GPS coordinates
California Integrated Water Quality System
(CIWQS) regarding the location of a
Category 2 SSO, how must you report the
location?
Biological activity in long, sluggish-flow, odors
flat grade sewer lines will likely cause:
Flatter sewer line grades may cause added A decrease in velocity which allows organic and inorganic solids to settle out. This, in
sewer maintenance expense and odor turn, allows biological activity to happen which corrodes the pipe and releases
nuisance. This is caused by what? hydrogen sulfide (H2S) which smells like rotten eggs
Clear water in entering a collection system infiltration
is called what?
Infiltration can occur in a pipe when the cracked, broken, fractures, has roots coming into it etc.
pipe is:
The main reason we add sodium BOD
hypochlorite to sewers is to control:
Roots can enter collection systems cracked pipes, broken pipes, fractured pipes
through:
2/6
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