Randy wrote:
On Tue, 18 Aug 2009 12:05:38 -0500, RBnDFW
wrote:

http://www.guardian.co.uk/world/2009...ant-death-toll


The firm that built the destroyed turbine told Reuters that it was too old to work
safely. "The machine is 30 years old. All guarantees of its functioning had
passed," said Maria Aliyeva, a spokeswoman for engineering firm Power Machines

How long did the turbines at Hoover dam go before they were rebuilt?
50 years?

Can't speak for Hoover, but I know for a
fact that the turbines and generators at
Wanapum Dam on the Columbia River got their
first major overhaul at right around 30 years.

http://en.wikipedia.org/wiki/Wanapum_Dam