The scope of work under this contract includes the replacement of the low lift pumping station MCC, discharge valve actuators, and other miscellaneous items.
The work in Plant 1 includes the decommissioning of the existing backwash tank, removing all associated 20” stainless steel piping, and replacing them with a new 150 HP 16” vertical turbine backwash pump, complete with 20” stainless steel piping, valves, and a magnetic flow meter. In addition, the supply and installation of a new exhaust fan, ductwork and the modification of existing 4” service water piping was performed.
The work completed in Plant 2 includes the removal of two existing horizontal split case backwash pumps, and a vacuum priming system replacement with one new horizontal split case backwash pump, vacuum control tank, and finally, a duplex vacuum pump.
The projects from both Plants were completed with all of the required Electrical, Structural, Instrumentation, and Control upgrades. The new pumps and Clear Well 1 were both disinfected prior to start-up and commissioning. The replacement of the existing low lift MCC was completed without any interruption of plant operations.