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Monitoring Degradation in Nuclear Reactors

[+] Author Affiliations
Milan Brumovsky, Milos Kytka

UJV Rez plc, Rez, Czech Republic

Paper No. PVP2015-45511, pp. V007T07A004; 6 pages
doi:10.1115/PVP2015-45511
From:
  • ASME 2015 Pressure Vessels and Piping Conference
  • Volume 7: Operations, Applications and Components
  • Boston, Massachusetts, USA, July 19–23, 2015
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5702-1
  • Copyright © 2015 by ASME

abstract

Nuclear reactor materials are affected by many stressors during their operation that result either from the nuclear reactions in the reactor core or by operation conditions (temperature, pressure) and water environment.

Generally, several different methods of monitoring damage in reactor materials are applied, depending on their type, design and conditions:

- Destructive, usually represent by surveillance specimens,

- Semi-destructive, usually performed by cutting small specimens from component surface, e.g. for small punch tests,

- Non-destructive, representing by non-destructive inspection methods applied during in-service inspections, like traditional ultrasonics, optical, dye-penetrant, eddy current etc. and also some new like automated ball indentation, thermoelectric power measurements etc.

The paper summarizes the possibility of application of these methods on main reactor components and shows some typical results and problems.

Copyright © 2015 by ASME

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