SYMPOSIA PAPER Published: 14 December 2018
STP160820170118

Advanced Neutron Dosimetry on VVER-440 Aimed to Reactor Equipment Load Evaluation during Lifetime Prolongation

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The lifetime of nonrestorable reactor equipment (e.g., reactor pressure vessels, in- and ex-vessel constructions, reactor support structures) of a first-generation water-water energetic reactor, VVER-440, may restrict plant life as a whole. Service life extension has affected the first generation of VVER-440 type reactors. Today, all Russian first-generation VVER-440s that have been in operation more than 45 years run with reduced cores by using dummy assemblies, except reactor Unit 4 of the Novovoronezh nuclear power plant. In comparison with other power units, the full-core loading scheme of this unit results in the highest neutron fluence accumulated over the whole operation period. Another important aspect of dosimetry research on Unit 4 of the Novovoronezh nuclear power plant reactor is the verification and validation of calculational methods used for the prediction of the maximum neutron fluence on the VVER-440 pressure vessel.

Author Information

Borodkin, Pavel
Scientific and Engineering Centre for Nuclear and Radiation Safety, Moscow, RU
Gazetdinov, Azamat
Scientific and Engineering Centre for Nuclear and Radiation Safety, Moscow, RU
Khrennikov, Nikolay
Scientific and Engineering Centre for Nuclear and Radiation Safety, Moscow, RU
Konheiser, Jörg
Helmholtz Zentrum Dresden-Rossendorf e.V. (HZDR), Dresden, DE
Dzhalandinov, Alexander
OKB “Gidropress,”, Podolsk, RU
Sidorov, Alexander
OKB “Gidropress,”, Podolsk, RU
Aleshin, Sergey
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Zaritskiy, Sergey
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Egorov, Alexander
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Kochkin, Vyacheslav
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Erak, Dmitry
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Panferov, Pavel
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
Makhotin, Denis
National Research Centre, Kurchatov Institute (NRC KI), Moscow, RU
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Developed by Committee: E10
Pages: 162–174
DOI: 10.1520/STP160820170118
ISBN-EB: 978-0-8031-7662-1
ISBN-13: 978-0-8031-7661-4