Surveillance and diagnostics of the beam mode vibrations of the ringhlas PWRs

Montalvo Martín, Cristina and Pázsit, Imre and Nylén, Henrik (2012). Surveillance and diagnostics of the beam mode vibrations of the ringhlas PWRs. In: "Reactor Noise Knowledge Transfer Meeting 2012", 16/10/2012 - 19/10/2012, Praga. ISBN 1805-6156.. pp. 1-11.

Description

Title: Surveillance and diagnostics of the beam mode vibrations of the ringhlas PWRs
Author/s:
  • Montalvo Martín, Cristina
  • Pázsit, Imre
  • Nylén, Henrik
Item Type: Presentation at Congress or Conference (Article)
Event Title: Reactor Noise Knowledge Transfer Meeting 2012
Event Dates: 16/10/2012 - 19/10/2012
Event Location: Praga
Title of Book: Reactor Noise Knowledge Transfer Meeting 2012
Date: 2012
ISBN: 1805-6156.
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Física Aplicada a los Recursos Naturales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Surveillance of core barrel vibrations has been performed in the Swedish Ringhals PWRs for several years. This surveillance is focused mainly on the pendular motion of the core barrel, which is known as the beam mode. The monitoring of the beam mode has suggested that its amplitude increases along the cycle and decreases after refuelling. In the last 5 years several measurements have been taken in order to understand this behaviour. Besides, a non-linear fitting procedure has been implemented in order to better distinguish the different components of vibration. By using this fitting procedure, two modes of vibration have been identified in the frequency range of the beam mode. Several results coming from the trend analysis performed during these years indicate that one of the modes is due to the core barrel motion itself and the other is due to the individual flow induced vibrations of the fuel elements. In this work, the latest results of this monitoring are presented.

More information

Item ID: 22882
DC Identifier: http://oa.upm.es/22882/
OAI Identifier: oai:oa.upm.es:22882
Official URL: http://www.teris.cz/rnktm2012.htm
Deposited by: Memoria Investigacion
Deposited on: 19 Mar 2014 08:16
Last Modified: 22 Sep 2014 11:33
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