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Identification of Standing Pressure Waves Sources in Primary Loops of NPP with WWER and PWR

Journal: Mechanics, Materials Science & Engineering Journal (Vol.4, No. 1)

Publication Date:

Authors : ; ; ; ;

Page : 1-1

Keywords : vibration; vibro-acoustic resonance; Helmholtz resonator; Noise Analysis; electro-acoustic analogies;

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Results of measurement and calculation of Eigen frequencies of coolant pressure oscillations in primary loops of NPP are presented. The simple calculation model based on equivalence of electric circuit with elastic wave propagation in liquids and gases, which gives a sensible interpretation of standing pressure waves sources is developed. It is shown, that pressurizer manifest itself as managed Helmholtz resonator generating a number of SPW (with Eigen frequencies of steam volume, water volume and their combination with coolant volume of respiratory line).

Last modified: 2016-06-23 21:39:05