"Jim Stewart" wrote in message
...
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

The generators are pulled and checked a lot more than 30 years. When we are
Hoover Dam last Thanksgiving, they had one generator pulled. Impressive to
see the size of the armature and that is takes two traveling cranes to lift
it, and not much clearance.