Wedron Silica Substation

Fairmount Santrol’s Wedron, IL silica sand mining and preparation facilities were rapidly expanding, requiring a new 10/14 MVA, 34.5-12.47kV distribution substation.  Short deadlines required a quick turnaround on the substation design and procurement of materials.  Utility Design Services was retained to design the substation and provide procurement services.  At the request of the client, UDS purchased the substation equipment directly, providing Fairmount Santrol with a single point of contact for all the major material purchases.

UDS served as the interface for coordination of the physical location of the new 34.5kV tap point, metering requirements, protective device coordination, and joint pole use.

The expansion projects at Fairmount Santrol, including the new substation, required a rebuild of 34.5kV line servicing the mine facilities.  As part of the mine’s expansion, a portion of the line on mine property had to be relocated.  UDS provided engineering and construction staking services for the line on mine property and an additional five miles of the 34.5kV line serving the mine.

Project Scope:

Site Design

  • Initial design survey
  • Site selection
  • Site grading design
  • Foundations


  • One-line diagram
  • Protection and control design
  • Protective equipment selection
  • Relay coordination with utility
  • Conduit and cable design
  • Ground grid design
  • Substation general arrangements
  • Elevation/section view details
  • Bill of materials
  • Specifications and bid packages
  • Procurement of structures, buswork, 38kV recloser and associated materials
  • Commissioning assistance
  • Programming of recloser controls

Electrical-Subtransmission Line

  • Field engineering
  • Construction staking (GPS)