Story

Lambert Engineers, Inc. supplied engineering and design services associated with the hot to cold conversion of three (3) electrostatic precipitators (ESPs) for each of the three 144 MW unit retrofits at Alcoa Warrick Station.

The conversion consisted of rerouting the existing gas flow to exit the economizer and pass through the air preheater before being routed to the new ESP inlet plenum.  The ESP outlet nozzle was modified for the new duct arrangement and the outlet duct was designed to tie-in to the new scrubber inlet duct.

Services included engineering and design for the structural ductwork for the new ESP inlets and outlets, support steel, turning vanes, fabricatior monitoring, and field services. LEI also provided a conceptual development strategy that resulted in an estimated direct $1 million savings to the customer versus an originally proposed competing concept in material and erection costs alone.