Vibration monitoring of hydroelectric units is an essential task to ensure safe operation and reliability of the units. Hydro Exploitation provides a complete
service for vibration diagnostic solutions (measurements and analysis) on all
types of hydroelectric machines.

This monitoring makes it possible to determine
the evolution in the vibratory behaviour of a unit during its life cycle or after an overhaul. It ensures early detection of any abnormalities in the vibration fingerprint. The customer is provided with a detailed vibration diagnostic of the machine (machine balancing, alignment problem, etc.).


  • on-site inspection of the units, determination of appropriate measurement areas
  • preparation of the measurement equipment and preparation of the unit
  • visual inspection of the unit
  • on-site measurement under actual operating conditions (velocity sensors, proximity probes)
  • determination of vibration levels for all operating modes
  • analysis of the results and recommendations for operational considérations (spectrum, orbits, Bode diagram, polar plot, etc.)
  • oil film monitoring
  • balancing

Specific skills

HYDRO Exploitation’s specialists :

  • offer a complete vibration measurement service and have the required equipment at their disposal
  • have the know-how specifically required for this type of measurement for diagnostics and analysis
  • have considerable experience in the management of hydroelectric facilities : they therefore have a highly practical
  • global view of each situation
  • provide effective solutions for continuously monitoring the vibrations of the sets in operation

Client benefits

The owner of the hydroelectric facility has the benefit of :

  • a complete service from Switzerland’s very few experienced specialists
  • relevant information about the vibratory behaviour of the machines in operation
  • the assurance that its hydroelectric units are operating under optimal conditions
  • expert advice on any improvements to be made (alignment, balancing, etc.)

Rue de l’Industrie 10, 1951 Sion
HYDRO Exploitation SA
Rue de l’Industrie 10
CP 750 - CH-1951 Sion
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