Resistance of the welded joint of austenitic steel NEUTRONIT A 976 SM in the corrosive environment of boric acid

The paper deals with the influence of the operating environment on the safe resistance of the welded joint of the construction material used in the nuclear power industry in the production of spent nuclear fuel containers. This material contains a higher percentage of alloying boron and is used as a...

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Published in:Korose a ochrana materiálu 2022-01, Vol.66 (1), p.20-24
Main Authors: Zavitkovská, J., Fulín, Z., Chocholoušek, M., Špirit, Z.
Format: Article
Language:English
Subjects:
Acids
Austenitic stainless steels
Baskets
Construction materials
Containers
Corrosion environments
Corrosion tests
Exposure
Gamma rays
Mechanical properties
Nuclear fuels
Radiation shielding
Radioactive wastes
Spent nuclear fuels
Stress corrosion cracking
Tensile tests
Welded joints
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creator Zavitkovská, J.
Fulín, Z.
Chocholoušek, M.
Špirit, Z.
description The paper deals with the influence of the operating environment on the safe resistance of the welded joint of the construction material used in the nuclear power industry in the production of spent nuclear fuel containers. This material contains a higher percentage of alloying boron and is used as a shielding construction material for neutron and gamma radiation. It is used to produce baskets for spent nuclear fuel containers. When the containers are being filled, the welded joint of the basket structure are briefly exposed to an aqueous boric acid solution. The aim of this work was to determine the effects of exposure to the corrosive boric acid environment on the mechanical properties of the material. Tensile tests on the original weld and post weld exposure in H BO and corrosion cracking tests on unexposed welds were performed. The evaluation of the results revealed that the exposure to the corrosive environment of boric acid did not significantly affect the strength characteristics of the tested material NEUTRONIT A 976 SM.
doi_str_mv 10.2478/kom-2022-0004
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subjects Acids
Austenitic stainless steels
Baskets
Construction materials
Containers
Corrosion environments
Corrosion tests
Exposure
Gamma rays
Mechanical properties
Nuclear fuels
Radiation shielding
Radioactive wastes
Spent nuclear fuels
Stress corrosion cracking
Tensile tests
Welded joints
title Resistance of the welded joint of austenitic steel NEUTRONIT A 976 SM in the corrosive environment of boric acid
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