On-site motor refurbishment shop

Electric motors are vital components of many industrial facilities, but are particularly so in a nuclear power plant. The aging process has left many motors in serious need of refurbishment. The costs for motor maintenance include the repair effort, transportation to and from the plant site, and the added delay in returning the motor to service. To reduce the costs and enhance availability, Commonwealth Edison´s Dresden Station has constructed an on-site motor refurbishment shop. This paper discusses the process that was undertaken to build this facility, summarizes the design process needed to establish a motor repair shop, describes the repair and testing processes, and gives some additional considerations related to operation of the facility. Placing the motor shop in service took less than three months, and has already resulted in cost savings in excess of two million dollars