Project Description

Boldt is the joint venture general contractor on this environmental upgrade on Minnesota Power’s Boswell Energy Center’s 585 MW Unit #4. Boldt started the project with all of the required concrete foundations for the new equipment. The civil and mechanical construction package includes the following work scope:

• Mechanical installation of Alstom NID flue gas sesulphurization system lime storage and handling equipment., fabric filter equipment, duct work, air compressors, process water equipment, piping and building steel

• NID electrical building

• Dry chemical building

• Waste ash dust collector equipment balance of plant (piping, elevator, miscellaneous enclosures)

• Concrete foundations and structural steel

One of the most important tools of any project that directly impacts both the quality and the cost is the project schedule. Boldt joined the project team six months prior to breaking ground and immediately began the scheduling process. This early involvement helped to align the engineering deliverables to support an aggressive construction surge required to get critical site and foundation work in place to avoid winter impacts. In addition, a significant amount of effort was made to establish pre-fabrication areas to preassemble the deliveries of mechanical duct and equipment into large assemblies. This allowed work to begin sooner, again avoiding elevated work and minimizing winter construction.