Water Distribution 1
Study online at https://quizlet.com/_61hkv6
1. Head is measured in height (feet) or pressure
2. Which type of valve will prevent the collapse of a pipe Air-and-vacuum relief
valve
3. The highest degree of protection of a coated steel pipe cathodic protection
is....
4. At which time of day is the age of the water stored in In the morning
the distribution system the highest/oldest?
5. One of chlorine advantages is that it has a persistent residual
6. Chlorine gas is _____ times heavier than air. 2.5X
7. After a water storage tank has been chlorinated, Coliform test
which bacteriological test must prove negative before
the tank is put back into service.
8. ~~~~~~Which is the best and most reliable way of Use a chlorine gas detec-
finding a very small chlorine leak? tor and place it near any
area suspected of leaking.
9. The minimum required free chlorine residual any- a detectable level
where in the distribution system is
10. First draw samples for the analysis of lead and copper 6 hours
water must be collected from taps where the water
has stood motionless in the plumbing for at least
11. Samples collected for cloakrooms are collected in Sodium thiosulfate
plastic bottles that must contain
12. The volume of a sample for coliform compliance is 100 ml
, Water Distribution 1
Study online at https://quizlet.com/_61hkv6
13. If a water sample is not analyzed immediately for 15 minutes
chlorine residual, it is acceptable to be analyzed within
14. The heart of a pump is called the impeller
15. Which device serves the same function as the packing Mechanical seal
16. Which is used to stop air leakage into the casing seals
around the pump shaft
17. Which is at the top of a stuffing box? Packing gland
18. Which assembly holds the lantern ring and packing? Stuffing box
19. Why is it important to monitor the speed of a variable To prevent cavitation from
speed pump? occurring
20. ~~~Which basic electrical unit is used to measure a Ohm
materials opposition of flow of electricity?
21. The first oil change on a pump should be done After a month of operation
22. How often should the temperature of centrifugal Once a month
pump motor bearings be checked with a thermome-
ter?
23. ~~~~All sensors that respond to liquid pressure will Air
preform poorly if _______ enters the air sensor
24. Which agency sets limits on the concentration levels United States Environ-
of harmful contaminants in potable water distributed mental Protection Agency
to costumers?
25. Which violations are most serious? Tier 1
Study online at https://quizlet.com/_61hkv6
1. Head is measured in height (feet) or pressure
2. Which type of valve will prevent the collapse of a pipe Air-and-vacuum relief
valve
3. The highest degree of protection of a coated steel pipe cathodic protection
is....
4. At which time of day is the age of the water stored in In the morning
the distribution system the highest/oldest?
5. One of chlorine advantages is that it has a persistent residual
6. Chlorine gas is _____ times heavier than air. 2.5X
7. After a water storage tank has been chlorinated, Coliform test
which bacteriological test must prove negative before
the tank is put back into service.
8. ~~~~~~Which is the best and most reliable way of Use a chlorine gas detec-
finding a very small chlorine leak? tor and place it near any
area suspected of leaking.
9. The minimum required free chlorine residual any- a detectable level
where in the distribution system is
10. First draw samples for the analysis of lead and copper 6 hours
water must be collected from taps where the water
has stood motionless in the plumbing for at least
11. Samples collected for cloakrooms are collected in Sodium thiosulfate
plastic bottles that must contain
12. The volume of a sample for coliform compliance is 100 ml
, Water Distribution 1
Study online at https://quizlet.com/_61hkv6
13. If a water sample is not analyzed immediately for 15 minutes
chlorine residual, it is acceptable to be analyzed within
14. The heart of a pump is called the impeller
15. Which device serves the same function as the packing Mechanical seal
16. Which is used to stop air leakage into the casing seals
around the pump shaft
17. Which is at the top of a stuffing box? Packing gland
18. Which assembly holds the lantern ring and packing? Stuffing box
19. Why is it important to monitor the speed of a variable To prevent cavitation from
speed pump? occurring
20. ~~~Which basic electrical unit is used to measure a Ohm
materials opposition of flow of electricity?
21. The first oil change on a pump should be done After a month of operation
22. How often should the temperature of centrifugal Once a month
pump motor bearings be checked with a thermome-
ter?
23. ~~~~All sensors that respond to liquid pressure will Air
preform poorly if _______ enters the air sensor
24. Which agency sets limits on the concentration levels United States Environ-
of harmful contaminants in potable water distributed mental Protection Agency
to costumers?
25. Which violations are most serious? Tier 1
