DALLAS ABLE CONCRETE VOLUTE PUMPS
A SITUATION AVERTED
The Dallas Able Pump Station houses 4 concrete volute pumps for flood control along the Trinity River. Each pump is rated for 220,000 gallons per minute. In June of 2018 the pumps were field performance and endurance tested. These field tests were performed to confirm that the pumps met their design regarding flow, head, speed, efficiency, vibration and noise. Field tests of this type are necessary as there are no test labs large enough for pumps like this. The pumps had been installed and in operation for over a year now when a potential issue was discovered. One pump unit had grease leaking from the bearing housing, and upon closer inspection we found a cut o-ring and rust on the bearing grease pack.
The possibility that these pumps could have an issue with their bearings was alarming. A bearing of this size can be expensive and difficult to replace. The gearbox weighs approximately 17,000lbs and the motor, 39,250lbs. If the motor and gearbox must be removed to access the pump bearings, the inspection would become quite a task. So, we looked for another way to remove the pump bearings.