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U.S. Department of Energy
Office of Scientific and Technical Information

Radon suppression in storage silos at the United States Department of Energy Feed Material Production Center, Fernald, Ohio

Conference ·
OSTI ID:6302645
 [1];  [2];  [3]
  1. Bechtel National, Inc. (USA)
  2. Westinghouse Materials Co., Fernald, OH (USA)
  3. USDOE, Washington, DC (USA)
Two silos at the Department of Energy Feed Material Production Facility in Fernald, Ohio, contain an estimated 8800 metric tons of high-grade pitchblende ore residue solids, which contain approximately 3,300 curies (Ci) of radium and 1810 Ci of thorium. These silos are the subject of an on-going CERCLA RI/F Program. Fugitive radon emissions from the silos exceed EPA limits. In addition, structural analyses have revealed that the silos have little credible remaining design life. While pursuing final remediation, a removal action is being taken to address the current situation. The removal action entails the emplacement of a covering layer of bentonite slurry inside the silos. The bentonite will reduce the fugitive emissions to EPA limits and mitigate the effects of dome structural failure, while presenting minimum impact on potential final remedial action alternatives for the silos. 4 refs., 4 figs., 2 tabs.
Research Organization:
Westinghouse Materials Co. of Ohio, Cincinnati, OH (USA). Feed Materials Production Center
Sponsoring Organization:
DOE/DP
DOE Contract Number:
AC05-86OR21600
OSTI ID:
6302645
Report Number(s):
FMPC-2215; CONF-910270--4; ON: DE91006914
Country of Publication:
United States
Language:
English