Project: WRRF Main 480V MCC Electrical Distribution Rehabilitation

The recommendations from the Phase II Facilities Plan are to replace the Water Resource Recovery Facility's (WRRF) existing main switchgear (MSB), several motor control centers (MCCs) and distribution panelboards, and related equipment. The existing electrical equipment, installed in 1982, have exceeded their useful lives. In addition, staff have difficulty procuring replacement parts, as the parts are no longer produced for equipment this old. The existing MSB is at risk of failure due to long-term exposure to hydrogen sulfide and the resulting corrosion of its copper bussing. Replacement is needed for continued operational reliability of the WRRF and many of its essential processes. 

The project includes replacing the MSB, several MCCs, transformer, several panelboards, control panels from the Operation Control House, programmable logic controller (PLC). In addition, retrofitting the existing Old Cogeneration Building, exterior improvements to the Operation Control House Building, and installing a transfer switch of the MCC to enable continuous operations of the Headworks facility. Estimated completion is August 2026.