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Impact of startup scheme on Francis runner life expectancy


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Gagnon, Martin, Tahan, Antoine, Bocher, Philippe and Thibault, Denis. 2010. « Impact of startup scheme on Francis runner life expectancy ». In 25th IAHR Symposium on Hydraulic Machinery and Systems (Timişoara, Romania, 20–24 Sept. 2010) Coll. « IOP Conference Series : Earth and Environmental Science », vol. 12. 012107. London, UK : Institute of Physics Publishing.

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Francis runners are subject to complex dynamic forces which might lead to eventual blade cracking and the need for corrective measure. Damage due to cracks in runner blades are usually not a safety issues but might generate unexpected down time and high repair cost. Avoiding the main damaging operating conditions is often the only option left to plant operators to maximize the life expectancy of their runner. The startup scheme is one of the available parameter which is controlled by the end user and could be used to minimize the damage induced to the runner. In this study, two startup schemes have been used to investigate life expectancy of Francis runner using in situ measurements. The results obtained show that the induced damage during the startup event could be significantly reduced with change to the startup scheme. In our opinion, an optimization of the startup scheme with regard to fatigue damage could extend significantly the life expectancy and the reliability of Francis runner.

Item Type: Conference proceeding
Additional Information: Special issue : 25th IAHR Symposium on Hydraulic Machinery and Systems,20–24 September 2010 'Politehnica' University of Timişoara, Timişoara, Romania
Tahan, Antoine
Bocher, Philippe
Affiliation: Génie mécanique
Date Deposited: 23 May 2012 17:55
Last Modified: 13 Apr 2023 16:08

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