Engineering Mechanics

International Conference

Proceedings Vol. 8 (2002)



May 13 – 16, 2002, Svratka, Czech Republic
Editors: Lubomír Houfek, Pavel Hlavoň, Petr Krejčí

Copyright © 2002 Institute of Mechanics of Solids, Faculty of Mechanical Engineering, Bruno University of Technology, Brno

ISBN 80-214-2109-6 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Vibrace potrubí VVER 1000
Petr Markov, Ladislav Pečínka
pages 175 - +10p., full text

Vibrations of VVER 1000 pipeline. This contribution explains the causes of highfrequency pipeline vibrations between regulation valves and 1000 MW turbine body installed at NPP Temelin. We have carried out a frequency-modal analysis of this pipeline which showed abnormal vibrations in the course of pre-operational tests. Moreover, there was carried out a frequency- modal analysis of the diffuser internal part which is obviously the root of increasing vapor flow's influence on the pipeline and on entire turbo-set. The analyses results have been compared with records on the measurements that were done during the mentioned tests by the SKODA Vyzkum s. r. o. staff. Since the valve cones modifications have already succeeded in cutting down the vibrations considerably, we propose a way how to reach further improvement if such need will be.

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All papers were reviewed by members of the scientific committee.

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