Process for eliminating deposits formed in a steam generator of

Details Process for eliminating deposits formed in a steam generator of Process for eliminating deposits formed in a steam generator of

1984-12-28

1987-08-11

Lechert, Jr., Stephen J.

Compositions

Radioactive compositions

134 3, 134 221, 134 2211, 134 2214, 134 41, 252 82, 376305, 376310, G21F 900, G21C 1932

Patent

active

046860673

ABSTRACT:
Process for the elimination of corrosion products formed on the tube plate and in the gaps between the tubes and the spacer plates of a steam generator of a pressurized water nuclear reactor, in order to prevent the appearance of a corrosion phenomena, which can lead to necking or denting of tubes by oxide growth.
The process consists of reacting with said oxides at between 50.degree. and 100.degree. C., an aqueous solution containing 6 to 8% gluconic acid, 3 to 5% citric acid, approximately 0.5% of a corrosion inhibitor and ammonia until a pH between approximately 3 and 9.5 is obtained.

REFERENCES:
patent: 3184389 (1965-05-01), Kersten
patent: 3294644 (1966-12-01), Walton
patent: 3973998 (1976-08-01), Datta et al.
patent: 4250048 (1981-02-01), Leveskis
patent: 4364900 (1982-12-01), Burrill
patent: 4485028 (1984-11-01), King
Gonzalez-Velasco, 1978, Electromigration behaviour of complexes between Fe(III) and Cu(III) Ions and Gluconic Acid, Anales De Quimica, pp. 17-21.
Rentler, et al., 1983, PWR Model Steam Generator Corrosion Studies, Combustion Engineering Inc. Windsor, Ct., 6 pages, EPRINP-3138 Research Project 623-1.
EPRI NP-3275, vol. 1, 1984, Causes of Denting: Summary Report.

Affiliated with

Also associated with

Rating

Process for eliminating deposits formed in a steam generator of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for eliminating deposits formed in a steam generator of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for eliminating deposits formed in a steam generator of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-401888