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Structural Integrity Assessment and Lifetime Prediction for Inermediate Rod Bayonets Control Bayonets of Control and Protection Systems of the WWER-440 Reactor: Part 2. Structural Integrity Analysis of Bayonet and Justification of Monitoring Period of Degradation Its Metal

Authors
  • Minkin, A. J.1
  • Margolin, B. Z.1
  • Fedosov, V. G.2
  • 1 National Research Center Kurchatov Institute—CRISM Prometey, St. Petersburg, 191015, Russia , St. Petersburg (Russia)
  • 2 PAO Izhorskie Zavody, Kolpino, 196650, Russia , Kolpino (Russia)
Type
Published Article
Journal
Inorganic Materials: Applied Research
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2021
Volume
12
Issue
6
Pages
1675–1683
Identifiers
DOI: 10.1134/S2075113321060137
Source
Springer Nature
Keywords
Disciplines
  • Radiation Materials Science
License
Yellow

Abstract

This work analyzes the structural integrity and brittle fracture resistance of the intermediate control bayonets of the control and protection system (CPS) of the WWER-440 reactor. The tests of the metal of the bayonets irradiated as part of Novovoronezg NPP unit 3 show that the structural integrity of the bayonets against the brittle fracture criterion is ensured on condition that the radiation-induced hardening of their material measured in hardness terms does not exceed 423 Vickers units.

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