Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Results of Operability Validation of BN-600 Reactor Permanent Components for Service Life Extension up to 60 Years

3/27/2026 2026 - #01 Nuclear materials

Vilensky O.Yu. Osetrov D.L. Pristrom S.A. Rogozhkin S.A. Staroverov A.I.

DOI: https://doi.org/10.26583/npe.2026.1.08

UDC: 621.039.531

Predictive operability analysis of BN-600 reactor permanent components for the period of 60 years using the МТ 1.2.3.06.1080-2015 regulatory procedure “Strength analysis of the main components of fast sodium-cooled reactors” that takes into account the impact of negative factors on the lifetime of BN-600 reactor permanent equipment. The service life extension was validated for the most significant BN-600 reactor permanent components, which determine the decision on the feasibility of extending the reactor operation up to 60 years. These components are as follows: the reactor vessel, pressure chamber, neutron reflector, headers, pressure pipeline unit, support skirt, heat exchanger supports, and radial shielding tubes.

The results of performed studies lead to a conclusion that it is possible to extend the service life of the BN-600 reactor permanent equipment under consideration up to 60 years. Rostechnadzor has issued a license extending the operation of the Beloyarsk NPP Unit 3 with a BN-600 reactor until 2040.

References

  1. Vasiliev B.A., Vilensky O.Yu., Kaydalov V.B., Kamanin Iu.L., Margolin B.Z., Gulenko A.G. Developing the Methodology for and Validation of the Operation Life Extension up to 45 Years for the BN-600 Reactor Vessel and Permanent In-Vessel Components. Izvestiya vuzov. Yadernaya Energetika. 2011;1:32–43. URL: https://nuclear-power-engineering.ru/full-issue/2011-01/ (accessed Nov.10, 2025) (in Russian).
  2. Vilensky O.Yu., Vasiliev B.A., Lysov V.A., Margolin B.Z., Gulenko A.G., Buchatsky A.A. Assessing the Possibility of Extending the BN-600 Operation up to 60 Years. Book of abstracts of the 13th International Conference «Materials Science Issues Arising during NPP design development, manufacturing and operation». St.-Petersburg, June 2–6, 2014. St.-Petersburg, Polygraph Express Publ., pp. 41–42 (in Russian).
  3. Vilensky O.Yu., Pristrom S.A. Results of Computational Strength Substantiation of the BN-600 Reactor Permanent Components for Operation Life Extension up to 60 years. Book of Abstracts of the 11th Inter-Industry Workshop “Equipment Strength and Reliability”. Moscow Region, October 14–18, 2019. Moscow, NIKIET JSC Publ., pp. 8–9 (in Russian).

stress-strain state permanent components radiation-induced shape change creep swelling crack fatigue

Link for citing the article: Vilensky O.Yu., Osetrov D.L., Pristrom S.A., Rogozhkin S.A., Staroverov A.I. Results of Operability Validation of BN-600 Reactor Permanent Components for Service Life Extension up to 60 Years. Izvestiya vuzov. Yadernaya Energetika. 2026, no. 1, pp. 98-109; DOI: https://doi.org/10.26583/npe.2026.1.08 (in Russian).

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