Minnesota Power – Dry Bottom Ash Conversion

Project: Boswell Energy Center Dry Bottom Ash Conversion and Unit Tie-Ins

Owner: Minnesota Power

Scope of Work: The Dry Bottom Ash project involved more than 60,000 trade-hours converting two coal-fired boiler units to dry ash from a wet ash process. This required several modifications to the plants’ back-end, including new concrete for the ash conveying system and new conveyors. After the concrete footings were poured, structural steel was erected on the bunker building, conveyors installed and modifications  made to the existing ash handling systems to allow the new conveyors to be tied into the system during outages at the plant.

Minnesota Power and Lakehead Constructors have an established relationship at Boswell Energy Center (BEC) in Cohasset, Minnesota that spans over 60 years. In that time, we have provided regular on-site maintenance and supported annual unit outages and tie-ins. We have also provided construction services on small and large capital projects.

Services: Served as General Contractor for civil and mechanical scopes, project management, site logistics, material receiving, lay-down, safety, and QA/QC

Self Performed: Civil, structural and mechanical scopes; concrete, steel erection, conveyor installation, crane support and heavy lifting. For Tie-In Outage, provided scaffolding, pipefitting and boilermaker trades