3. cfs/1.55
5. The impeller housing of a centrifugal pump
7. Closing the discharge valve on a positive displacement pump would cause motor the amperage to___________
8. A ball forced through a sewer line.
13. Shoring must protude ________ inches above the top of the excavation.
15. The minimum scouring velocity normally used for sanitary collection lines is ___ f/s.
17. Hydrogen sulfide gas smells like ____.
18. A sewer ________to a water line, must have a minimum of 10 feet of separation.
20. A Parshall flume is a type of__________
21. Spacer ring in a pump packing gland to improve seal water distribution is a _____ ring.
22. A device used to test the percent deflection in a sewer pipe between manholes is known as what?
23. Leakage of seal water around the packing on a centrifugal pump is required because it acts as a(n) _____?
24. 26,928 gallons per hour of flow is equal to 1 _______.
1. Shoring is required for any trench over _____feet deep.
2. The flushing water pressure in a water-lubricated wastewater pump should be ___________PSI more than the pump discharge pressure.
3. 5,280 feet
4. To sample for pH, you should collect a____sample.
6. Who must review plants for final approval before a new sewer can be constructed?
7. Liners are installed in sewers to correct problems caused by_________
9. Closing the discharge valve on a centrifugal pump would cause motor the amperage to___________
10. amps x volts
11. rise/run
12. A PH of 7 is _______
14. A(n) _________ is required for any CSO outfall pipe.
16. What must be done before any work is to be done on a piece of equipment?
19. A PH of 6.0 is
1. Shoring is required for any trench over _____feet deep.