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Pump Run Time Methodology

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

One such power station pumped the flow at 64 M3/second. The four culverts run deep below the ground and an estimate from a flow meter manufacturer was in excess of £100,000 each. Many of the power stations are due to be closed shortly and there was a reluctance to make large investments.

Working with E.on, JEP group and the MCERTS steering committee an acceptable 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 characteristics curves to determine the flow rates.

The first power station to adopt this method is Aberthaw Power Station. The certificate application is being reviewed and should be issued shortly.

This method has saved the power station £100,000 at each site and demonstrate the a pragmatic approach to the MCERTS scheme.

Please view an example as a pdf: