1. A "special application tool" is a time period used to describe mechanical backflow
preventers that - ANS-do no longer meet the layout requirements of an accredited
backflow prevention assembly
2. A licensed BAT must renew their certificate - ANS-by using January 1st of every yr
3. A column of water 12" high exerts ____ psi at the bottom - ANS-0.433
4. A column of water exerts pressure at the bottom of the column due to the - ANS-weight
of the water inside the column
5. A compensating valve can be used to - ANS-make amends for a leaking SOV #1 while
testing an approved DCVA
6. A cross-connection is described as any actual or ability physical connection between a
public potable water system or the patron's potable water device and any source of
non-potable liquid, strong, or gasoline that might the potable water deliver by backflow -
ANS-contaminate
7. A differential strain test kit is used to measure - ANS-the difference between excessive
and low strain in an accredited backflow prevention assembly
8. A direct pass-connection is situation to - ANS-both backsiphonage and backpressure
9. A sight tube is used even as trying out an accredited - ANS-DCVA
10. According to Washington State Regulations, how frequently need to approved backflow
prevention assemblies be examined through a DOH licensed BAT? - ANS-annually
11. After checking out a DCVA, to return the meeting to provider the BAT should - ANS-near
all check cocks, open SOV #1 and then slowly open SOV #2
12. All chemical compounds coming into the potable water control of the water device that
aren't below the direct purveyor must be considered - ANS-a High Health Hazard
13. An authorised air hole is a bodily separation between - ANS-the end of the potable water
supply pipe and the overflow rim of the receiving vessel, a distance of at least 2
instances supply pipe diameter and in no way much less than 1"
14. An approved air gap is suitable as backflow protection for - ANS-Backpressure in
addition to Backsiphonage and each High and Low Health Hazard
15. An accepted backflow prevention assembly is an RPBA, RPDA, DCVA, DCDA, PVBA, or
SVBA of make, version and length that is - ANS-permitted via the Washington State
DOH, ODW
16. An accepted backflow prevention assembly have to be installed in the sort of way that -
ANS-it'll not emerge as flooded and with ok area around the meeting to facilitate testing
and protection
17. An example of a kind of facility this is considered to pose a extreme chance of
contamination to the potable water system is a - ANS-waste water treatment facility
18. An RPBA need to not be set up where - ANS-all the above (water spilt from the
assembly may be objectionable, the meeting will become flooded, the assembly is extra
than 60 inches above the floor or ground)
, 19. Approved backflow prevention assemblies ought to be designed to be -
ANS-disassembled and repaired in line for all sizes
20. As part of an inspection of the meeting a BAT must decide - ANS-if the meeting is
presently listed and authorised for the orientation that it's far set up
21. assembly is - ANS-resistance of waft due to the loading of the test valves
22. Backsiphonage backflow is described as backflow due to a reduction in system strain.
What else need to be present for - ANS-an opening to atmosphere
23. Check valves must be internally loaded and must be drip-tight - ANS-inside the route of
go with the flow with not less than 1 psi differential
24. Design, fabric, and operational requirements for DCVA & RPBA are observed in the -
ANS-AWWA standards
25. Differential Pressure is the - ANS-difference in strain between two particular points in a
piping device
26. Differential strain take a look at kits ought to be validated for accuracy and if wanted,
calibrated - ANS-as a minimum annually
27. Friction will motive a reduction of water stress in a pipe between any two factors in the
pipe while the water is - ANS-flowing
28. Gauge Pressure is the strain - ANS-above atmospheric stress
29. If a consumer requires continuous water provider it's miles advocated that - ANS-a
parallel set of backflow assemblies appropriate for the degree of chance be established
30. If CV #1 is located to be defective while testing a RPBA, the BAT would then - ANS-stop
the take a look at
31. If the gauge stress in a water pipe is negative, this means that exists - ANS-a vacuum
32. If the check package is held three feet above the DCVA, the outcomes can be that the
BAT could - ANS-fail a DCVA that must bypass
33. In a backsiphonage event, if an permitted SVBA is established well - ANS-the test valve
will close tight to make a water tight seal and the air inlet valve will completely open
34. It is usually recommended that a BAT usually use a sight tube while testing a -
ANS-DCVA & DCDA
35. Microbiological contaminants coming into the potable water gadget are the very best
health situation and could usually be taken into consideration - ANS-a High Health
Hazard
36. Newly installed backflow assemblies have a initial check often due to: high fee of failure
on the time of the - ANS-debris from in the supply piping
37. Pesticides are examples of - ANS-a excessive health hazard substance
38. Pressure is the pressure in step with unit location and is regularly expressed as -
ANS-pounds per rectangular inch
39. Test reviews completed by using the BAT must be - ANS-whole, accurate, and legible
40. The air inlet valve of a PVBA should open while - ANS-the pressure in the frame is at
least 1.Zero psi and the hole pressure is atmospheric
41. The BAT have to complete a take a look at record form suited to the local water purveyor
- ANS-after each take a look at of an accredited backflow prevention meeting or
inspection of an accredited air gap
42. The reason of the largest strain loss in an permitted backflow prevention - ANS-
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