ANOTHER VERY EXPENSIVE TURBINE BLOWN INTO SMITHEREENS- AND ANOTHER
REMARKABLE BEE ACHIEVEMENT TO PULL A MODERN COUNTRY INTO THE DARK AGES.
THIS SEEMS TO BE A HABITUAL EXERCISE OF THE NSA "/AFFIRMATIVE ACTION/ "
CONSCRIPTS.
SOUTH AFRICA- FAILED LAND OF COMMUNIST ANC & WHITE DIASPORA
Not really intended for the public, BUT, amazing how pics like these
can get out even after Eskom put a blanket of secrecy around the whole
incident. Eskom like hiding stuff like this!
So I found out what happened at Duhva power station and the busted
turbine. They were doing a test of the turbine over speed protection
system, and in short, the protection did not kick in.
Conventional wisdom tells me that there should be a better way to test
a protection system than to try and destroy the turbine and see if it
feels like protecting itself, but that's basically what they did.
The turbine has a "governor valve" which controls the amount of steam
coming into the turbine In order to keep it running at the right speed
(3000 rpm for our grid frequency) – and then it has a main isolation
valve to shut the steam off completely.
The protections systems (of which there are 3 independent systems, and
a dude with his finger on the emergency button) are supposed to close
this main isolation valve in a fraction of a second when the turbine
over-speeds.
So they get ready for the test, they dump a* helluva* lot of steam onto
the turbine, speed starts going crazy, it went from *3000 RPM* to* 4500
RMP* in *ten seconds* (they are generally only designed for 10 to 15%
over-speed, all three protection systems should have kicked in by the
time you get to 110%).
Anyway, I don't know why, but all three systems failed, and the BEE dude
with his finger on the manual trip button wasn't at his post. So the
result was a* big bang*, some fire and a lot of steam going where it
shouldn't go.
Scary thing is Duvha has a shared turbine hall. All six units are placed
in one long straight stripe, with no missile shield between them. And if
you look at the third last pic you can see how big that shaft is, if
that landed on another turbine it would have destroyed that too. They
are very lucky they didn't lose the entire station.
So anyway, what gets reported in the news? "Unforeseen maintenance" at
one of the units at /Duvh/a requires it to remain shut
down for *18 months*.
Understatement of the century in my book. But you shut off the
containment ventilation system at /Koeberg/ for one hour and a radiation
alarm goes off, then it's a *front page news* national crisis.
They now have blown up Koeberg turbines, Mossgas turbines, SASOL tanks-
and Duhva turbines. Looking at what their BEEE "technicians" could do to
a mega structure like *this* ... imagine what their BEE DOCTORS do to
*YOU????*
I give up.
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