Pump Run Time



Initial MCERTS Inspections at some of the country’s largest power stations highlighted the lack of direct flow measurement for the cooling water and the difficulty of measuring these flows.

As many of the power stations are nearing the end of their operational lives there was a reluctance to make such large investments in the technology needed to accurately measure the flow.


Working with E.on, JEP group and the MCERTS steering committee, an accepted method has been developed to calibrate and report the pump run times to supply flow data.

The method involves measuring the pressure differential across the pumps and using the pump’s characteristic curves to determine the flow rates.


The first power station to adopt this method was Aberthaw Power Station. This method has saved the power station in excess of £100,000 and demonstrates the pragmatic approach to the MCERTS scheme.