The UK also has that T-shirt from 2005 - although with gasoline as the 
overflowing fluid ...

https://en.wikipedia.org/wiki/Buncefield_fire#Causes

Martin

-----Original Message-----
From: Jon Elson via cctalk [mailto:[email protected]] 
Sent: 27 July 2025 14:53
To: Doug Jackson via cctalk <[email protected]>
Cc: Jon Elson <[email protected]>
Subject: [cctalk] Re: Scada computers and remote terminal units

On 7/26/25 22:29, Doug Jackson via cctalk wrote:
> Yea,
>
> It is fascinating the damage that can be caused by a pump ignoring the 
> upper limit switch on a water reservoir, and the subsequent damage to 
> the foundations....
>
Yup, it had nothing to do with cyber hacking, just a dislodged sensor.  Union 
Electric (Now Ameren) had a pumped storage plant built around 1960 at Proffit 
Mountain, called their Taum Sauk plant.  It pumped water from a river to the 
top of an old volcanic cauldera about 800 feet up.  They added an additional 
rim of gravel and mud to raise the maximum level.  There was a state park right 
next to the mountain.  In 2005, the dislodged sensor allowed the reservoir to 
overflow, causing the gravel rim to collapse and sending roughly one billion 
gallons of water crashing through the state park, nearly killing the park 
supervisor's entire family.

Jon

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