Title:
METHOD OF REMOVING DEPOSIT FORMED IN STEAM GENERATOR FOR PRESSURIZED WATER TYPE REACTOR
Document Type and Number:
Japanese Patent JPS60230099
Kind Code:
A
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 DEG and 100 DEG 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.
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Inventors:
JIYAN POORU BUISE
JIYAN JIYATSUKU KIYANPU
DEIDEIEERU NOERU
JIYAN JIYATSUKU KIYANPU
DEIDEIEERU NOERU
Application Number:
JP7186085A
Publication Date:
November 15, 1985
Filing Date:
April 04, 1985
Export Citation:
Assignee:
ELICTRICITE DE FRANCE
International Classes:
G21F9/00; G21F9/28; (IPC1-7): G21F9/30
Domestic Patent References:
| JPS5753873A | 1982-03-31 |
Attorney, Agent or Firm:
Asamura Akira
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