Hot Functional Tests – passivation of a primary circuit of Mochovce nuclear power plant Unit 3

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F20%3AN0000090" target="_blank" >RIV/26722445:_____/20:N0000090 - isvavai.cz</a>

Result on the web

<a href="https://www.vgb.org/pt_03_20.html" target="_blank" >https://www.vgb.org/pt_03_20.html</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Hot Functional Tests – passivation of a primary circuit of Mochovce nuclear power plant Unit 3

Original language description

This article describes a methodology of creation and evaluation of a protective passivation layer on the inner surfaces of the primary circuit in a nuclear power plant. The article has two parts. The first part describes a theory and technological procedure of the formation of a protective oxidic corrosion layer during hot functional tests. These are illustrated in the example of hot functional tests at the Unit 3 of Mochovce nuclear power plant. In the second part of the article, the successful passivation is confirmed by the demonstrated through analysis of the formed layer. The evaluation of the successful passivation based on the characterization of the corrosion layer is shown. Based on the proposed chemical program, passivation was carried out in February and March 2019 at Unit 3 of Mochovce nuclear power plant. The resulting passivation layer was characterized by using selected analytical methods. The developed evaluation methodology uses several analytical techniques (Raman microscopy, Scanning electron microscopy, X-Ray Photoelectron Spectroscopy and others). The analytical techniques used were chosen to be complementary to each other, which contributes to the complexity of the sample evaluation. The conclusion of the evaluation was that a high-quality protective passivation layer, which corresponds with the industrial practice, was developed during hot functional tests.

Czech name

—

Czech description

—

Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

—

OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

VGB Power Tech

ISSN

1435-3199

e-ISSN

—

Volume of the periodical

2020

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

5

Pages from-to

41-45

UT code for WoS article

—

EID of the result in the Scopus database

—