Eliminate the Use of Wedged Wood Timbers and the Pumping Station Will Still Operate

The Water Pollution Control Facility (WPCF) needed to revamp an aging primary effluent pumping station due to downward revisions of the flows to this treatment process train. The pumps had systematic control and vibration issue shortly after startup more than 15 years ago. HDR was hired to design a 3.68 m3/d (84 mgd) primary effluent pumping station. Prior to embarking on a new design, a condition assessment of the existing pumping equipment was performed to determine if any of the units were salvageable. Vibration analysis is one of the many tools that were used to evaluate the pumping equipment and assist in balancing the pumps and motors. The success of employing vibration analysis in this facility to save capital dollars and reduce maintenance issues will be presented.