Experience with the testing of hydroelectric units in the series of Vyga hydroelectric plants to assess their mechanical condition

Conclusions  

1.	The vibration testing of hydroelectric units should be performed prior to and after overhaul.
2.	The volume of measurements taken during the tests should be sufficient not only for comparison of the vibration level with existing norms, but also for determination of basic impairments of the hydroelectric unit.
3.	It is expedient to include vibration tests with an expanded volume of measurements in the schedule for the overhaul of hydroelectric units.

Translated from Gidrotekhnicheskoe Stroitel'stvo. No. 12, pp. 21–22, December, 1997.