We offer a range of pumping station services to ensure that existing installations work to their optimum efficiency and that new pumping stations are accurately matched to their rising mains.

Pumping Station Surveys

Pumping stations, particularly sewage pumping stations, are a major source of energy usage within the water and wastewater industry. For pumps and pumping stations to work reliably and to their best efficiency, they have to be carefully matched to the characteristics of the rising main into which they deliver. Flowcheck are expert in sewage pumping station management. We offer a range of pumping station services to ensure that existing installations work to their optimum efficiency and that new pumping stations are accurately matched to their rising mains.

Our pumping station services include pumping station optimisation, flow surveys, pressure tests and problem solving. Our Engineers take accurate on site measurements of pressure, flow and level and will produce pump curves, system curves and Ks values for rising mains.

Pump tests and pump curves

We perform pump tests to produce accurate pump curves whilst the pumps are installed in their pumping station environment. By testing the pumps in situ, whilst installed in the pumping station, the pump performance curve for each device can be measured whilst it is pumping the media it has been installed to deliver i.e. the performance of a raw sewage pump is measured pumping sewage as opposed to clean water (as used in a factory test). The in situ pump tests can also identify problems within the design of a pumping station. See Pumping station optimisation

System curve

The system curve for a rising main should form the foundations for the design of a pumping station. The system curve shows the friction head loss developed in a pipe over a range of flow rates.

For pumps to work reliably, and to their best efficiency, they have to be carefully matched to the system curve characteristics of the rising main into which they deliver. A pump that is incorrectly matched to its pipe system may not deliver the required flow rate, it will use excessive amounts of energy and it is likely to be problematic. See Pumping station optimisation

To view the theoretical effects of different flow rates, pipe dimensions, roughness values and the influence of settled solids, you can use our friction head loss calculator. This calculator provides an estimation of the friction head loss that would be generated with clean water passing through new pipe. On sewage applications and on pipes that have been in service for several years, the only way to determine the friction head loss is to take on site measurements. Flowcheck specialise in providing this service. See Errors in friction head loss calculations

Our Engineers arrive at pumping stations fully equipped to install a tapping point in the rising main and to take pressure and flow measurements that enable an accurate system curve to be produced.

Pressure tests

Pumping station pressure tests can be used to determine a wealth of valuable information on the performance of a pumping station and its rising main. The pressure tests can be used in conjunction with flow surveys to produce system curves and pump curves as stated in the sections above. Pressure tests can also be used to locate blockages in pipe lines and to identify peak positive and negative pressures within a pumping station. By accurately logging the pressure at several points over the length of a pipe section, it is possible for us to identify where blockages have occurred. Using pressure transducers in conjunction with our high speed data loggers, we can record peak positive and negative pressure oscillations that can be used for pipeline surge analysis.

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