Units 4 &5 Mass Flow Meter Replacement

The City of Garland is seeking a contractor to replace the mass flow meters at Units 4 and 5 of the Spencer Plant. The scope of work includes demolition, installation, calibration, training, and documentation. The contractor must provide all labor, materials, equipment, and consumables necessary to perform the work. The project must be completed within a five-day consecutive window, and the contractor must provide a schedule and abide by the execution schedule outlined in the document. The project includes the installation of new ABB MVS transmitters, RTD assemblies, communication cards, AO modules, and paddle/orifice plate assemblies. The contractor must also provide updated engineering drawings, paddle/orifice plate specifications, flow calculations, and ABB datasheets. • The project requires dual-range DP measurement for accurate low-flow and high-flow operation. • The system must maintain accuracy and repeatability through burner start, transition flow, and full-load blow. • The flow computer shall automatically switch to Low DP when differential pressure falls below 8% of the high DP range. • The contractor must submit a written control logic plan before contract award. • The contractor must provide orifice plate design drawings prior to award. • The final design must be approved during the design review meeting. • No fabrication may begin before written approval. • No welding is allowed on spools or plate assemblies.