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
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Removal and <strong>Replacement</strong> of blades in situ<br />
• <strong>Blade</strong> stubs were prepared with a double V weld preparation<br />
geometry and inspected prior installation<br />
• The replacement blades were fitted in place and welded<br />
according <strong>to</strong> qualified sequence and weld procedures<br />
• Subjected <strong>to</strong> ultrasonic inspections by a third party inspection<br />
company<br />
• Three of four (3 of 4) welds passed 1 st inspection<br />
• One of four (1 of 4) required repair before being accepted <strong>to</strong><br />
ASME VIII standards on re-inspection<br />
<strong>In</strong> <strong>Situ</strong> <strong>Francis</strong> turbine <strong>Blade</strong> <strong>Replacement</strong> | NWHA Hood River| 2013-05-23<br />
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