Hydraulic transient modeling was performed during a comprehensive evaluation of an
existing raw water transmission system. The existing system is comprised of three cast iron
pipelines and one steel pipeline and is supplied by five large pumping units. Pressure
transients are controlled in the system by timed closure discharge valves at the pump
station and by three tanks. Proposed improvements to the system include rehabilitation of
the cast iron lines and steel pipelines with HDPE and Ductile Iron slip-linings respectively.
The existing and rehabilitated systems were modeled using a Method-of-Characteristics
based program, and the existing surge control devices were found to be adequate in both
cases. General confirmation of the transient model was found by comparison of model
output to measured field data during a normal pump shutdown. Some sensitivity was found
to the pre-trip air volume in the hydro-pneumatic tank. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 950 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 09/01/2007 |
