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Analyses of Free Span Oxide Layers on SG Tubes of NPP Temelin

[+] Author Affiliations
A. Hojna, M. Postler, J. Burda, D. Karnik

Nuclear Research Institute Rez, Rez, Czech Republic

V. Hanus, V. Pisarik

NPP Temelin, Praha, Czech Republic

Paper No. ICONE16-48390, pp. 107-114; 8 pages
doi:10.1115/ICONE16-48390
From:
  • 16th International Conference on Nuclear Engineering
  • Volume 1: Plant Operations, Maintenance, Installations and Life Cycle; Component Reliability and Materials Issues; Advanced Applications of Nuclear Technology; Codes, Standards, Licensing and Regulatory Issues
  • Orlando, Florida, USA, May 11–15, 2008
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-4814-0 | eISBN: 0-7918-3820-X
  • Copyright © 2008 by ASME

abstract

The differences in deposit layers on steam generator (SG) tubes of WWER NPP Temelin have been observed, namely in compactness and adhesiveness. The samples of the oxide layers have been taken from different SG during outage of the two units and analyzed. Results of the analyses are compared to previous results on deposit layers created during operation of SG model. The model simulates secondary side of SG tubes operation; the original feed water from the NPP Temelin has been used for tests. Deposit built up on tubes inside the model on the free surface is related to the real SG tube deposits and differences of the oxide layer morphologies are discussed.

Copyright © 2008 by ASME
Topics: Feedwater , Boilers

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