Process for the decontamination of steel surfaces and disposal o

Details Process for the decontamination of steel surfaces and disposal o Process for the decontamination of steel surfaces and disposal o

1982-08-27

1985-04-02

Kyle, Deborah L.

Compositions

Radioactive compositions

134 3, 134 2214, 134 2219, 252631, G21F 928, C23G 108

Patent

active

045086419

ABSTRACT:
A solution is provided for decontaminating steel surfaces, especially in nuclear reactor cooler circuits. The solution contains formic acid and/or acetic acid and at least one reducing agent such as formaldehyde and/or acetaldehyde. The solution is effective to dissolve the iron oxide from the contaminated steel surface directly and/or reductively and to convert it to Fe-(II)-formate or acetate which are stabilized by the reducing conditions in the solution. For waste disposal the dissolved iron is precipitated from the used decontaminating solution, wherein the iron compounds that have been formed are the sole adsorbents for the radioactive materials contained in the decontaminating solution.

REFERENCES:
patent: 3873362 (1975-03-01), Mihram et al.
patent: 4220550 (1980-09-01), Frenier et al.
Loucks, C. M., "Cleaning and Defilming Arts in Industry" in Ayres, J. A., Decontamination of Nuclear Reactors and Equipment, The Ronald Press Co., N.Y. , (1970), pp. 6-33.

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