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Concrete facts for air gap variation
27 October, 2010
Refurbishment at Rocky Reach hydropower plant in the US brought to light interactions between the civil works and generators that had not been documented prior to rehabilitation
Zooming in on condition monitoring
11 September, 2009
VibrosystM explains how premature ageing of a hydro generator can be detected from the outset
Speed tests
27 January, 2004
Load rejection tests with overspeed were undertaken on a refurbished bulb unit to define various parameters
Prevention is better than a cure
14 December, 2000
By monitoring the air gap at Igarapava hydro power plant in Brazil, major damage and costly outages were avoided on a new hydro generator
Screen effects on turbine efficiency
16 June, 2000
Acoustic scintillation flow meters played an important role in assessing turbine performance at the McNary dam in the US
Keeping a close eye on a new hydrogenerator
10 June, 1999
In this case study the benefits of performing condition monitoring on a new machine were revealed, as Randy Wallman and Réjean Beaudoin* explain
Monitoring the air gap
13 April, 1998
Monitoring and diagnostic systems helped Hydro-Québec mitigate concrete growth problems at its Rapide-des-Iles hydro plant