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Related Experiment Videos

Testing hot cell shielding in the fuel conditioning facility

J C Courtney1, R T Klann

  • 1Nuclear Science Center, Louisiana State University, Baton Rouge 70803-5820, USA.

Health Physics
|January 1, 1997
PubMed
Summary

Shielding for the Fuel Conditioning Facility hot cells was tested using cobalt-60 sources. The shielding adequately protects workers, meeting annual dose limits with administrative controls.

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Area of Science:

  • Nuclear Engineering
  • Radiation Protection
  • Health Physics

Background:

  • The Fuel Conditioning Facility (FCF) at Argonne National Laboratory houses hot cells for handling irradiated materials.
  • Modifications to the shielding design of two hot cells and their transfer paths required a comprehensive shield test program.

Purpose of the Study:

  • To analyze and test the effectiveness of the modified shielding design in attenuating gamma rays.
  • To assess radiation levels at critical areas, including wall penetrations and cask-floor interfaces.

Main Methods:

  • Utilized mixed fission product sources, specifically Cobalt-60 (60Co) with activities of 0.37 TBq (10 Ci) and 518 TBq (14,000 Ci).
  • Conducted detailed surface measurements on hot cells, transfer tunnels, and storage pits.

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  • Measured dose equivalent rates in adjacent corridors during testing with the high-activity source.

    • Main Results:

    • The shielding design, with administrative controls, proved adequate for attenuating gamma radiation.
    • Radiation levels were within acceptable limits, meeting the design criterion for facility workers.

    Conclusions:

    • The shielding modifications at the FCF are effective in maintaining low radiation exposure.
    • The facility design ensures annual doses for workers remain below the 10 mSv (1 rem) limit.