Project Examples

Project: Decommissioning and License Termination for the Coleman Thorium Gas Mantle Manufacturing Facility, Wichita, Kansas

Performance Period: 2002 - 2005

Description:

The Coleman facility manufactured thoriated gas lantern mantles for over fifty years. ChesNuc was contracted to perform a MARSSIM-based decommissioning of the site. Scope included management of the overall decommissioning effort; negotiation with state regulators; site characterization surveys; development of building surface and soil Derived Concentration Guideline Levels (DCGLs); development of a remediation plan; site remediation; decontamination of building surfaces; identify and excavate underground contaminated lines; on-site and off-site sewer line characterization, decontamination and replacement; process and package all waste for disposal; conduct final status surveys for remaining buildings and open lands; and develop final status survey reports supporting license termination.

ChesNuc used its proprietary MARSS survey and data collection system to facilitate data management, site characterization, and final status reporting. ChesNuc managed the demolition of two buildings, provided waste segregation for disposal (radioactive versus non-radiological disposal); and performed final status surveys and sampling. ChesNuc decontaminated two additional major building strucrures; including scabbling of floor surfaces and removal of contaminated drain lines and vents. Monte Carlo modeling (MCNP code) was applied to develop gamma survey correlations between indicator radionuclides and thorium contamination levels. This correlation technique was used to provide real-time evaluations to guide clean-up efforts.