Cedar Rapids, Iowa
Tier II MATS Compliance Project – Units 3 and 4
Client / Owner
Architect / Engineer
Sargent & Lundy, LLC
Graycor Industrial Constructors was contracted along with Sargent & Lundy (engineer) to complete environmental upgrades to a series of coal-fired plants owned by Alliant Energy. In total, four generating units at three of Alliant’s Midwest plants received emission reduction upgrades. The improvements, related to air quality control systems (ACQS), will reduce mercury and fine particulate matter emissions and support compliance with the federal Mercury Air and Toxics Standards (MATS) rule.
For Alliant Energy’s ACQS projects, Graycor worked closely with local trades and equipment manufacturers to complete these compliance-driven environmental upgrades at generating stations in Iowa and Wisconsin. Work included foundations, piping, conduit and cabling, air and water systems, equipment skids incorporating blowers and pumps, distributed control system (DCS) interface controls and the offload and setting of storage silos and tanks. With each of these complex projects, scheduling and coordination among project participants were key components of success.
At the Prairie Creek Generating Station in Cedar Rapids, Iowa, work on environmental upgrades was recently completed on units 3 and 4. This project’s scope of work included the installation of an ACI system, calcium bromide and LFGC equipment, a pre-engineered building and HVAC systems.