Tender Description
Notice type: Combined Synopsis/Solicitation · NAICS 237110 · PSC J046 The Contractor shall provide five (5) custom Stager Controllers for the well-water filtration systems that are installed at the following Locks and Dams; LD2 (Hastings, MN), LD5 (Minnesota City, MN), LD5A (Fountain City, WI), LD7 (La Crescent, MN), LD9 (Eastman, WI). These systems were originally designed, built and installed by Robert Hill Company in St Louis Park, MN. in the water is oxidized then filtered through backwashing filters. Oxidation is accomplished with dissolved potassium permanganate injected into the water stream via a chemical feed pump. The chemical feed pump is wired to operate with the well pump. The filters are four 30” diameter steel tanks. The filter beds are composed of manganese greensand, a manganese coated glauconite capped with anthracite filter coal. The four in-line tanks filter, until a set volume is treated, or a set period of time has passed. The filters are then taken off-line and back-washed individually. Following backwash, the filters are then returned to service. Backwash is provided by the remaining tanks on-line, so there is no contamination in the lower distributor or lower layers of the filter bed. Installation and Training ? Includes turnkey installation, integration, programming and training ? Includes Operator and Maintenance (O&M) Manual complete with schematics, recommended spare parts, and part numbers. ? Electronic copies of schematics, program data and ladder diagrams must be provided. Contractor Site Visits ? Interested contractors are welcome and encouraged to see the application prior to bidding on these controllers. ? Minimum 48 hours’ notice is required and is limited to maximum of two hours per site. ? Availability for site visits is during work hours of Monday through Friday 08:00 – 15:00.
- Country
- United States
- Published
- 25 Sept 2023
- Closing date
- 13 Oct 2023
- Procedure
- Combined Synopsis/Solicitation