Cracking of Francis runners during transient operation

  • J.H. Gummer and S. Etter
  • Vol. 15 - Issue 4, 2008

The authors report on and analyse an unusual instance of runner cracking of a large low-head Francis turbine. The cracks were found to result from high hydraulic dynamic forces during transients; in particular during start-up, in conjunction with normally acceptable weld defects. Results of the diagnostic tests are presented, and recommendations are given for the avoidance of similar cracking in future units.

Back to search

Order the full article

Get a copy of this back issue article in digital PDF format

£10.00
Buy Now

Related articles

Stabilizing, rapid repair and re-commissioning after a sector gate failure in Norway

Vol. 30 - Issue 5, 2023

Flood evaluation and dam safety for the Sg Perak cascade in the context of climate change

Vol. 30 - Issue 1, 2023

Lessons learned and future advancements in failure mode and effect analysis for hydro plants

Vol. 29 - Issue 5, 2022

Advanced analytics for the optimal management of hydro plants

Vol. 29 - Issue 3, 2022
Archive Search

Print Journal

Go in-depth with the international journal on hydropower & dams

Learn more

Cracking of Francis runners during transient operation
  • Vol. 15 - Issue 4, 2008

All your interactions with our website are protected by strong 256-bit encryption. Learn more about how we safeguard your personal data in our Privacy Policy.

Aqua~Media International Ltd is the publisher of The International Journal on Hydropower and Dams, and the organizer of the HYDRO, ASIA and AFRICA event series.

+44 (0)20 8773 7244
  • © 2024 Aqua~Media International Ltd.
  • All Rights Reserved.
  • Website by The Pixel Parlour.
Close
Close