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Study of nozzles' metal of VVER-440 pressure vessel after 45 years of exploitation
https://doi.org/10.22349/1994-6716-2020-104-4-192-199
Abstract
The paper presents the research results on determining the mechanical characteristics of the metal samples cut out from the nozzles and the cylindrical shell at the nozzles zone of the VVER-440 reactor vessel after 45 years of operation.
Keywords
shell of the nozzle zone,
critical brittleness temperature,
yield strength,
ultimate strength,
RPV material
Supporting agencies: The work was carried out with the financial support of Rosenergoatom JSC.
About the Authors
D. Yu. Erak
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
Dr Sc. (Eng).
1 Akademika Kurchatova Sq, 123182 Moscow.
K. I. Medvedev
NRC “Kurchatov Institute”
Russian Federation
1 Akademika Kurchatova Sq, 123182 Moscow.
Russian Federation
1 Akademika Kurchatova Sq, 123182 Moscow.
A. A. Chernobaeva
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
Dr Sc. (Eng).
1 Akademika Kurchatova Sq, 123182 Moscow.
D. A. Zhurko
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
Cand Sc. (Eng).
1 Akademika Kurchatova Sq, 123182 Moscow.
A. D. Erak
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
Cand Sc. (Eng).
1 Akademika Kurchatova Sq, 123182 Moscow.
S. A. Bubyakin
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
Cand Sc. (Eng.
1 Akademika Kurchatova Sq, 123182 Moscow.
A. P. Bandura
NRC “Kurchatov Institute”
Russian Federation
Russian Federation
1 Akademika Kurchatova Sq, 123182 Moscow.
References
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2. State Standard GOST 1497-84: Metals. Tensile test methods, Moscow: Standartinform, 2008.
3. Student. The probable error of a mean, Biometrika, 1908, No 6 (1), pp. 1-25.
4. Magnus, Ya.R., Katyshev, P.K., Peresetsky, A.A., Econometrics: Initial course, Moscow: DELO, 2004.
5. Gurovich, B., Kuleshova, E., Zabusov, O., Fedotova, S., Frolov, A., Saltykov, M., Maltsev, D., Influence of structural parameters on the tendency of VVER-1000 reactor pressure vessel steel to temper embrittlement, J. Nucl.Mater, 2013, No 435, pp. 25-31.
6. PNAE G-7-002-86: Gosatomnadzor Standards for calculating the strength of equipment and pipelines of nuclear power plants, Moscow: Energoatomizdat, 1989.
Review
For citations:
Erak D.Yu., Medvedev K.I., Chernobaeva A.A., Zhurko D.A., Erak A.D., Bubyakin S.A., Bandura A.P. Study of nozzles' metal of VVER-440 pressure vessel after 45 years of exploitation. Voprosy Materialovedeniya. 2020;(4(104)):192-199. (In Russ.) https://doi.org/10.22349/1994-6716-2020-104-4-192-199
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