MadModder

The Breakroom => The Water Cooler => Topic started by: boatmadman on March 26, 2011, 05:45:15 PM

Title: Why do we do overspeed test on large machinery?
Post by: boatmadman on March 26, 2011, 05:45:15 PM

Have a look here, the text speaks for itself - VERY scary:

http://nolstuijt.wordpress.com/2011/03/15/duvha-powerstation-turbine-blowup-sa/

http://www.massengineers.com/generator_accident_in_africa.htm

Ian

Title: Re: Why do we do overspeed test on large machinery?
Post by: dsquire on March 26, 2011, 07:16:43 PM

Seems to me as though maybe we just need a competency test for builders and operators.  :doh:

Just my 2 cents worth.

Cheers  :beer:

Don

Title: Re: Why do we do overspeed test on large machinery?
Post by: DaveH on March 27, 2011, 03:11:15 PM

Hi,

The reason we do an overspeed test is to make sure all the controlls for not allowing it overspeed are working. :)

In this case they didn't work :doh:

This is what happens when the people involved are incompetent. :zap:

Dave

Title: Re: Why do we do overspeed test on large machinery?
Post by: foozer on March 27, 2011, 03:40:10 PM

When they do not work or are just not part of the system you can get them big globs of oil floating upon the shore. Better to find the fault under test conditions then during production.

Robert

Title: Re: Why do we do overspeed test on large machinery?
Post by: bigmini on March 27, 2011, 08:20:15 PM

Gobsmacked by the photos. That looks like a 12" shaft, snapped like a carrot and flung across the room.  :zap: