Gozfejleszto dekontaminálás hatékonyságá nak áramlástechnikai vizsgálata, II. Csominták korróziós állapotának elemzése

Translated title of the contribution: Hydrodynamic study of the effectiveness of a decontamination technology utilized for steam generator, II. Analysis of the corrosion state of the tube samples

Kálmán Varga, Zoltán Németh, István Varga, Rita Szánthó, János Borszéki, Pál Halmos, Péter Tilky, János Schunk

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In the course of the optimization of the AP-CITROX decontamination technology the effects of the different flow rates of the decontamination solutions on the corrosion state of stainless steel tube samples originating from steam generators of Paks NPP were studied. A pilot-plant circulation system was developed to examine the effect of various technological parameters such as flow rate, contact time, chemical concentration and temperature. The experiments were carried out in the flow rate range of 0.5 - 2.89 m/s, in one or two consecutive decontamination steps. The results of the voltammetric and ICP-OES studies have revealed that (in order to improve the passivity of the surfaces) the flow rate should be kept as low as possible (0.5 m/s) during the passivation (in the 6-8 steps). To evaluate the necessary number of the decontamination cycles, it is advisable to perform an overall estimation on the corrosion state of the steam generators (i.e. to prepare a so-called "corrosion map" of the steam generators).

Translated title of the contributionHydrodynamic study of the effectiveness of a decontamination technology utilized for steam generator, II. Analysis of the corrosion state of the tube samples
Original languageHungarian
Pages (from-to)133-139
Number of pages7
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume108
Issue number3
Publication statusPublished - Mar 1 2002

ASJC Scopus subject areas

  • Chemistry(all)

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