Investigation of corrosion degradation of a tube sheet in steam generators in nuclear power plants with vver reactors

Measures for ensuring reliable and safe operation of a tube sheet in the steam generators in nuclear power plants with VVER reactors are examined and validated. The reasons for and mechanisms of the damage occurring to the tube sheets in steam generators are examined. The results of experimental stu...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2008-10, Vol.105 (4), p.248-256
Main Authors: Trunov, N. B., Popadchuk, V. S., Brykov, S. I., Zhukov, R.Yu, Davidenko, S. E.
Format: Article
Language:English
Subjects:
Boilers
Chemistry
Corrosion
Degradation
Generators
Hadrons
Heavy Ions
Hydraulics
Maintenance management
Nuclear Chemistry
Nuclear Energy
Nuclear Physics
Nuclear power plants
Nuclear reactors
Physics
Physics and Astronomy
Q1
Reactors
Steam
Studies
Water
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Summary:Measures for ensuring reliable and safe operation of a tube sheet in the steam generators in nuclear power plants with VVER reactors are examined and validated. The reasons for and mechanisms of the damage occurring to the tube sheets in steam generators are examined. The results of experimental studies evaluating the corrosion effect of the working medium in the second loop on the tube sheet are presented and it is shown that the defects detected by eddy-current monitoring form predominately in the startup and nonstationary operating regimes of steam generators as well as during disruptions of the water-chemistry regime. Suggestions are made for optimizing the water-chemistry regime of the second loop and for preserving a steam generator during downtime.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-009-9093-6