Network Rail Sudbrook Pumping Station
Aturia mixed flow submersible borehole pumps, the removal of existing pumps and installation of new units, rising mains and control valves.
Challenge
The Severn tunnel is the vital part of the mainline rail line between England and South Wales and requires the extraction of significant quantities of water via 14 submersible borehole pumps in five shafts along its length.
The existing pumps were installed in the 1990’s and had come to the end of their useful life. The project aimed to facilitate energy savings, easier maintenance, and more accurate monitoring of asset condition.
14 mixed flow Aturia submersible mixed flow pumps with increased efficiency motors developed specifically for the project. The pumps’ hydraulic performance was adjusted to give improved efficiencies at low flows to reduce the power consumption.
The pumps were modified to improve the resilience of the internal components from abrasion.
|
Model |
Flow (m3/hr) |
Head (m) |
Motor (kW) |
|
XAB 22A/3 |
910 |
58 |
191 |
|
XAB 19B/3 |
680 |
69 |
169 |
|
XAB 19B/2 |
364 |
47 |
90 |
|
XAB 19B/2 |
364 |
36 |
75 |
|
|
|
|
|
All the existing pumps and pipe work were removed with and replacement pumps, rising mains and control valves were replaced successfully and ahead of schedule by AxFlow’s Site Service Team.
Significant power savings have been realised by Network Rail.
