3b duke energy jocassee rotor pole asia pacific partnership power gen task force

Asia-Pacific Partnership

on

Clean Development and Climate

Asia Pacific Partnership

United States of America

Power Generation Task Force

August 13 – 17, 2007

Eddie Duncan

Hydro Operations

Hydroelectric Generation Efficiency

Improvement

Jocassee Rotor Pole Refurbishment

2Asia Pacific Partnership • Aug 13 - 17, 2007

FirstEnergy Corp. & Duke Energy Corporation

Jocassee Runner Upgrade Outage

Generator work

• Pole refurbishment

• Eliminating asbestos

• Replacing class b with class f

insulation

• Discovered improved technique for

pole key removal

• Re-rounding stator

• Re-wedge stator

• Shrink rotor rim

• Replace rim keys

• Currently developing repair and fix for

rotor rim iron bottom support plate

cracks




Jocassee – Rotor Pole Removal




Jocassee – Rotor Pole Key Removal Rigs




Jocassee – Rotor Pole Key Removal Rigs
















Jocassee – Rotor Pole being Lowered




Jocassee – Rotor Poles Awaiting Shipping




Jocassee – Rotor Pole Shipping Crates




Jocassee – Rotor with Poles Removed




Jocassee - Generator Rotor Lift

Jocassee Runner Upgrades



Jocassee - Generator Rotor Cross-Section




Jocassee - Rotor Ledge Supporting Stack Iron

Jocassee Rotor

Ledge Cracking




NEAR MISS!!!

Jocassee - Rotor Ledge Crack and Failure




Jocassee Damper

Bar Inspections

Jocassee - Damper Bar Cracking Problem





Jocassee Damper

Bar Inspections




Jocassee Damper

Bar Cracks





Jocassee – Intake Structures




Jocassee – Intake Cylinder Gate (Closed)




Jocassee – Intake Gate (Lifted Off Seat)




Jocassee – Intake Tunnel Filled


Engineering

3b duke energy jocassee rotor pole asia pacific partnership power gen task force