Process for repairing the tubes of a steam generator

Chemistry: electrical and wave energy – Processes and products

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204 25, 291574, 2940218, 138 97, 165173, C25D 312, C25D 704

Patent

active

046967230

ABSTRACT:
For repairing the tubes (2') of a steam generator (1), an impervious metallic sleeve is formed along the defective area (26) of the internal wall of a tube (2') by a wet process. The surface treatment is carried out on the spot in the tube (2') by means of a nickel solution free from chlorine, preferably a nickel sulphamate solution free from chlorine.

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Chemical Abstracts, vol. 88, 1978, p. 452, "Restoration of Water Distribution Gate Valves by Chromium Plating In a Cold Self-Regulating Electrolyte", A. I. Kovbasyuk et al.; & T. R. Kishinev, S-KH Inst. 1974, 123, 99-102.
Chemical Abstracts, vol. 88, 1978, p. 452, Resume No. 80956w, "Restoration of Tractor Engine Sleeves by Wear-Resistance Chromium Coatings", M. P. Stratolat et al and T. R. Kishniev, S-KH. Inst. 1974, 123-102-7.

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