Development of industrial accelerometer for vibration diagnostics of NPP equipment.
Tech Area / Field
- FIR-INS/Nuclear Instrumentation/Fission Reactors
8 Project completed
Senior Project Manager
Kondratenkov Yu B
VNIIEF, Russia, N. Novgorod reg., Sarov
- All-Russian Research Institute for Nuclear Power Plant Operation, Russia, Moscow\nMendeleev Institute of Metrology, Russia, St Petersburg
- Fraunhofer Institute of Nondestructive Testing, Germany, Dresden
Project summaryTo 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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