Columbia Energy designed, fabricated, and provided a full-scale column mock-up demonstration test of a small column ion exchange (SCIX) for Savannah River Remediation (SRR). The test demonstrated the ability of the SCIX to remove cesium in the feed stream and the ability to sluice the ion-exchange media out of the column.

The SCIX process consists of Rotary Microfilters (RMF), submersible pumps, two ion exchangers, and spent resin disposal modules installed in an SRS waste tank. This technology is designed to accelerate the removing and processing of radioactive waste (i.e., cesium and insoluble solids) from tanks at the Savannah River Site.


  • Mechanical Engineering
  • Process Engineering
  • Design
  • Fabrication
  • NQA-1 Oversight
  • Mock-up Testing
  • 3-D Modeling

Quality Standards

  • ASME B16.5, 2009, Pipe Flanges and Flanged Fittings
  • B31.3, 2008, Process Piping
  • Boiler and Pressure Vessel Code (BPVC), 2007
  • NQA-1, 2000, Quality Assurance Requirements for Nuclear Facility Applications


  • U.S. Department of Energy (DOE)
  • Savannah River Nuclear Solutions (SRNS)
  • Savannah River Remediation (SRR)
  • Defense Waste Processing Facility (DWPF)