| 摘要 |
A method for decontaminating a radioactively contaminated metallic object. A radioactively contaminated metallic object is placed into a first bath and thus contacted with a non-radioactive, aqueous solution containing formic acid until the formic acid is completely stoichiometrically depleted thereby forming an aqueous, stoichiometrically depleted solution. The metallic object is then placed into a second bath of the same chemical composition. The non-radioactive, aqueous solution of the second bath is also preferably completely stoichiometrically depleted. The concentration of the aqueous solution containing formic acid is preferably about 0.3 Mol/l. These steps are repeated until the residual radioactivity level of the metallic object is beneath a permissible threshold level, such as 0.37 Bq/cm2. The radioactive metallic oxides and metallic hydroxides are sedimented out, and the sludge is solidified with cement and subsequently decontaminated.
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