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Vibration Diagnostics

#0049


Development of industrial accelerometer for vibration diagnostics of NPP equipment.

Tech Area / Field

  • FIR-INS/Nuclear Instrumentation/Fission Reactors

Status
8 Project completed

Registration date
14.05.1993

Completion date
31.12.1996

Senior Project Manager
Kondratenkov Yu B

Leading Institute
VNIIEF, Russia, N. Novgorod reg., Sarov

Supporting institutes

  • All-Russian Research Institute for Nuclear Power Plant Operation, Russia, Moscow\nMendeleev Institute of Metrology, Russia, St Petersburg

Collaborators

  • Fraunhofer Institute of Nondestructive Testing, Germany, Dresden

Project summary

To increase NPP safety different systems are used, among which systems of vibration diagnostics including a complete set of industrial accelerometers, various instrumentation and devices for analysis in a frequency range of 0,1 – 2000 Hz have a significant place. These systems provide a means for diagnosing many faults in rotating mechanisms, deterioration of machine elements, cracks in structures, etc.

In USSR and later in Russia the following vibro-acoustic systems for some NPPs were bought: SUS (Siemens Company, Germany), the system ot Bruel & Kjer Company, Denmark.

Purchasing of many systems to provide all NPPs is impos-sible because of their high cost (hundreds of thousands of dollars for a system including 50-100 thousand dollars, which is the cost of Industrial piezoaccelerometers forming a part of the system). Development of home-produced analogs for industrial accelerometers will allow the process of introducing vibro-acoustic systems at Russian NPPs to be quickened and consequently make them more safety.

For many years VNIIEF has been practicing the develop-ment and operation of a wide parametric series of piezo-accelerometers of AP type which can be used to measure shock and vibrational accelerations over a wide amplitude (from 10-5 to 105 g) and frequency (0.1 Hz - 60 kHz) range.

The desired production basis and skilled personnel give hope for the development of industrial piezo-accelerometers for NPPs at a high scientific and technology level.


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