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Why do we do overspeed test on large machinery?
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Topic: Why do we do overspeed test on large machinery? (Read 7747 times)
boatmadman
Full Member
Posts: 102
Located in Barrow in Furness, South Cumbria
Why do we do overspeed test on large machinery?
«
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
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If it works, take it apart and find out why!
dsquire
In Memoriam
Hero Member
Posts: 2275
Country:
Kitchener, Ontario, Canada
Re: Why do we do overspeed test on large machinery?
«
Reply #1 on:
March 26, 2011, 07:16:43 PM »
Seems to me as though maybe we just need a competency test for builders and operators.
Just my 2 cents worth.
Cheers
Don
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Good, better, best.
Never let it rest,
'til your good is better,
and your better best
DaveH
Hero Member
Posts: 1413
Country:
Kempton Park, South Africa
Re: Why do we do overspeed test on large machinery?
«
Reply #2 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
This is what happens when the people involved are incompetent.
Dave
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(Ex Leicester, Thurmaston, Ashby De La Zouch.)
foozer
Full Member
Posts: 194
Camano Island WA
Re: Why do we do overspeed test on large machinery?
«
Reply #3 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
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Ignorance is Bliss, thus I aim for Perfection
bigmini
Jr. Member
Posts: 66
Re: Why do we do overspeed test on large machinery?
«
Reply #4 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.
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Why do we do overspeed test on large machinery?