Quiz Questions: |
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| 1. |
Pumping stations are one of the more vulnerable features of a flood protection project. The failure of a pumping station during a flood could result in considerable damage within the protected area. |
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True |
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False |
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| 2. |
Engineers responsible for the preliminary design and layout of the pumping facility should coordinate any special design features that may affect the local sponsor's costs with the project manager. |
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True |
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False |
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| 3. |
Pumping stations affect the hydrology and water quality of both the receiving and supplying water bodies. The changed hydrologic and water quality conditions often affect other environmental parameters. |
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True |
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False |
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| 4. |
Reduced dissolved oxygen, increased temperature, increased turbidity and suspended solids are the adverse environmental impacts of a pumping station. |
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True |
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False |
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| 5. |
Length, location, and type of construction of the connection are not one of the factor affecting the reliability of the supply connection between the power source and the pumping station. |
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True |
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False |
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| 6. |
Pumping station capacity requirements are normally determined by the ______________in accordance with EM 1110-2-1413. This manual provides the basis for establishing pumping requirements for the maximum and minimum river stages, and the maximum water stages permissible in the protected area. |
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Hydraulics engineer |
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Electrical engineer |
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| 7. |
A pumping station should be located or sited in such a manner to produce the most direct inflow possible. |
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True |
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False |
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| 8. |
Floodwater pumping stations should not be of the wet-pit (sump) type employing vertical mixed-flow or axial-flow pumps in practically all cases as seen in page 9. |
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True |
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False |
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| 9. |
If seepage flows are more than 30 % of the total required capacities of the pumping station, the number and capacity of the pumps shall be such that a 100% standby pumping capacity is available with failure of any installed pump. |
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True |
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False |
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| 10. |
The size of the sump may affect the selection of sizes and number of pumps with regard to the minimum desirable operating cycle. |
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True |
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False |
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| 11. |
Trash racks should have ample net area so that the velocity of the flow through the gross rack area does not exceed 0.76 m/ sec (2.5 fps). The clear opening between bars should be approximately 45 mm (1-3/4 in.), but may be greater if justified by the size and type of pumps to be protected, but should not exceed 75 mm (3 in.) in any case. |
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True |
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False |
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| 12. |
In general, a single pipeline should be installed and direct-connected to each pump. In the case of pumping stations of small capacity (315 /sec (5,000 gpm) or less), two pumps may be connected to the same line. The connection should be made inside the pumping station or a valve vault outside of the pumping station by a fitting.. |
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True |
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False |
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| 13. |
Underground discharge lines in small pumping stations should not have a check valve on each pump discharge line to prevent backflow. |
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True |
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False |
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| 14. |
Proper ventilation of pumping stations is not an important design consideration. |
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True |
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False |
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| 15. |
The space heater should be sized to maintain a minimum temperature of ____________ |
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12.8 C (55F) |
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100 F |
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None |
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