HDC performed a 3-D cam and blade positioning accuracy survey. Results of this survey showed problems. Corrective actions have been undertaken at McNary and other USACE powerplants.

The December 2005 Index Test Report from ATECo shows the misalignment of the 3-D cam surface profile away from the optimum efficiency profile.

Rod Wittinger's Memorandum for the Record details the events of the December 2005 index test activities.

The initial survey is described in the October 3, 2008 HOT Meeting minutes.

Blade Survey results Part 1

Blade Survey results Part 2