In Situ Francis Turbine Blade Replacement due to Gross Cavitation
In Situ Francis Turbine Blade Replacement due to Gross Cavitation
In Situ Francis Turbine Blade Replacement due to Gross Cavitation
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Elements and Considerations of the Business Case<br />
• Voith Hydro Canada’s Mississauga Ontario division were<br />
contracted with Peak Hydro Services (then a wholly owned<br />
subsidiary of Voith Hydro), now Voith Hydro Services<br />
• Peak (Voith) Hydro Services has more than twenty seven (27)<br />
years dedicated <strong>to</strong> Hydro Field Machining and Welding<br />
Services – Voith Hydro 135 years<br />
• Concluded the downstream runner of Unit 13 was salvageable<br />
• Upstream runner was in worse condition (true of all upstream<br />
runners at the plant)<br />
• Several blades exhibited gross cavitation with multiple through<br />
holes<br />
• <strong>Cavitation</strong> so deep preparation <strong>to</strong> clean sound parent metal not<br />
possible<br />
• Determined that a minimum of three (3) blades would need <strong>to</strong><br />
be replaced<br />
<strong>In</strong> <strong>Situ</strong> <strong>Francis</strong> turbine <strong>Blade</strong> <strong>Replacement</strong> | NWHA Hood River| 2013-05-23<br />
10
Change language