the unwanted reversal of flow in a potable water system
the unwanted reversal of flow in a potable and non-potable water system
what is a backflow preventer?
is a approved device that stops contamination of potable system
is a approved device that stops contamination of a system
is a approved device that stops contamination of potable and non potable water systems
Prv's are installed upstream or downstream of a back water valve
upstream
downstream
people and dcva devices are able to go into both pits and vaults
false
true
maybe if they're small?
what is a minor hazard?
any cross connection that can cause a nuisance with low probability of illness or death
when they look 18
any cross connection that can cause a nuisance with low probability of a health hazard
zone protection has a mix of potable and nonportable water
true
false
relief valves and poppets are:
normally open, need pressure to close
normally closed, need pressure to open
normally open, need pressure and flow to close
normally closed, need pressure and flow to open
just look up the math stuff this shit is too hard to type out
true
min air gap for a 2" tank filler in brewery is:
25mm
38mm
300mm
100mm
min air gap for a 1.5" tank filler in chemical plant is:
75mm
25mm
38mm
can't have a air gap in a toxic place
atmo vac breaker must be:
38mm above flr
at critical level
cycle every 12 hours
be 1' off the floor
CO2 and copper mixing causes death this is:
good
bad
not happening at my house
I walk through the valley of the shadow of death, I will fear no evil
CCCM stands for
cross connection control manual
cross connection control manual
cross connection control manual
don't pick this one
a Rp under pressure but with not water flowing is in a normal position
true
false
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