Renovation of a municipal facility in Rochester, Minnesota. Completed plans call for the renovation of a municipal facility.

This project is to upgrade the existing ash room equipment located at the Olmsted Waste to Energy Facility (OWEF) in Rochester, Minnesota. Olmsted Waste to Energy currently uses a "Dust Master" style mixer for their fly ash management system. This mixer will be removed and replaced with a Pugmill style mixer. Question Deadline 10/08/2025 at 2:00 PM CT Question via Electronically. Contact Information Contact: Derek Mullenbach Contracts Manager Address: 2122 Campus Dr. SE Suite 200 Rochester, MN 55904 Phone: (507) 328-7033 Email: derek.mullenbach@olmstedcounty.gov 1.1 This project is to upgrade the existing ash room equipment located at the Olmsted Waste to Energy Facility (OWEF) in Rochester, Minnesota. Olmsted Waste to Energy currently uses a "Dust Master" style mixer for their fly ash management system. This mixer will be removed and replaced with a Pugmill style mixer. 1.2 The OWEF is a waste-fired cogeneration power plant located in Rochester, Minnesota that is owned and operated by Olmsted County. The OWEF provides heating, cooling, electric power, and other utility services to a number of local buildings. The primary fuel for the OWEF is Municipal Solid Waste (MSW), with natural gas and light fuel oil serving as backup fuels. 1.3 The OWEF consists of two (2) 100 ton-per-day and one (1) 200 ton-per-day MSW combustor boiler units of the mass-burn water-cooled wall design, three (3) steam turbine-generators, MSW receiving facility, ash handling systems, air pollution control equipment, necessary auxiliary installations, medium voltage equipment necessary to connect with the utility grid, and a natural gas fired backup boiler. 1.4 The two (2) 100 ton-per-day Riley/Takuma waste combustor boiler units, Unit 1 and Unit 2, were commissioned in 1987. Unit 1 and Unit 2 are of the stoker fired, watercooled wall, excess air type. Unit 1 and Unit 2 supply about 25-30 kpph of live steam each, at 610 psig, 610-6500 F. The one (1) 200 ton-per-day AEEVR/ Duro Dakovich waste combustor boiler unit, Unit 3, was commissioned in 2010. Unit 3 is a stoker fired, water-cooled wall, excess air type. Unit 3 supplies 57-63 kpph of live steam, at 610 psig, 610-6500 F. The 75 kpph dual fuel Nebraska packaged boiler unit provides backup steam at 250 psig saturated conditions for use during the waste combustor boiler shutdowns. 1.5 Electrical power is generated with one (1) backpressure steam turbine generator unit of 1.86-MW nominal capacity (TG1), one (1) condensing steam turbine generator unit of 2.22-MW nominal capacity (TG2), and one (1) condensing/extraction steam turbine generator unit of 5.4-MW nominal capacity (TG3). TG1 and/or TG3 supply steam to a 60 psig header used primarily for the OWEF district energy system; TG2 exhausts into air cooled condenser 1; and TG3 exhausts into air cooled condenser 2. Steam from the 600 psig header is also cascaded to supply 250 psig steam headers through pressure reducing and desuperheating stations. 1.6 The facility operates continuously twenty-four (24) hours per day, seven (7) days per week, fifty-two (52) weeks every year. The planned operating schedule of each boiler allows for normal planned maintenance to be accomplished without interrupting the supply of steam or electricity. There are currently three (3) scheduled maintenance shutdowns per year for Unit 1 and Unit 2 each and two (2) scheduled maintenance shutdowns per year for Unit 3. Outage durations vary depending on the time of year, but normally requires about two (2) weeks for Unit 1 or Unit 2 and four (4) weeks for Unit 3. Outages typically do not occur simultaneously. 1.7 This project shall have all work specified below performed as a turnkey service, unless indicated otherwise in this specification. The contractor shall supply all supervision, labor, and tools for all work conducted onsite. A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. B. The work included under Division 26 shall consist of furnishing labor and materials necessary for the complete installation of electrical systems shown on the Contract Drawings and Specifications. Work shall be complete and in operating condition at the completion of Contract. C. Include minor items which are obviously and reasonable necessary to complete the installation and usually included in similar work even though not specifically mentioned in the Contract Documents. D. Deviations due to particular manufacturer's requirements shall be provided at no additional cost to the Owner. E. Where material quantities are shown, they are for the convenience of the Contractor only. The Contractor shall be responsible to verify quantities. F. Coordinate with the Mechanical Contractor and Other Contractors for coordination drawings for all disciplines. Coordination drawings shall include plan view and elevations. G. Coordinate with Other Contractors as to low voltage systems to be removed and/or replaced with project phasing. H. Coordinate with structural for penetration through structural members. Exposed conduit on ceiling is not acceptable. I. The model numbers and series of the equipment (where mentioned) are current at the time the contract documents were prepared. Some of the model numbers or series/lines may be end-of-life or obsolete at the time submittals are created or when equipment is ordered for installation. Verify model numbers and software/firmware prior to ordering the equipment to review the status of the models. Provide current model equipment and software providing equivalent or better performance and features at no additional cost to the Owner.