Process for the treatment of radioactive graphite
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United States of America Patent
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-
Sep 23, 2003
Grant Date -
May 30, 2002
app pub date -
Oct 1, 2001
filing date -
Oct 14, 1999
priority date (Note) -
Expired
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Abstract
A process for the treatment of radioactive graphite which includes the following steps: (i) reacting the radioactive graphite at a temperature in the range of from 250.degree. C. to 900.degree. C. with superheated steam or gases containing water vapor to form hydrogen and carbon monoxide; (ii) reacting the hydrogen and carbon monoxide from step (i) to form water and carbon dioxide; and (iii) reacting the carbon dioxide of step (ii) with metal oxides to for carbonate salts. The process enables radioactive graphite, such as graphite moderator, to be treated either in-situ or externally of a decommissioned nuclear reactor.
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