Author Topic: Berlin AquaDom explosion - what went wrong?  (Read 12313 times)

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Offline PlainName

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #100 on: December 22, 2022, 12:01:59 am »
The exploding aquarium: What you weren't told (but should probably know)

What does this chappy know that everyone else in this thread hasn't already learned or postulated? This is "A Brit, curious about everything around him, lives in Germany and has a video camera", so appears to be just repeating whatever he's picked up from the likes of YouTube and news media. Just wondering why this one is picked vs the probably hundred or so others that weren't (many of which would have at least some engineering background to flaunt).
 
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Online nctnico

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #101 on: December 22, 2022, 12:35:40 am »
The exploding aquarium: What you weren't told (but should probably know)

What does this chappy know that everyone else in this thread hasn't already learned or postulated? This is "A Brit, curious about everything around him, lives in Germany and has a video camera", so appears to be just repeating whatever he's picked up from the likes of YouTube and news media. Just wondering why this one is picked vs the probably hundred or so others that weren't (many of which would have at least some engineering background to flaunt).
Agreed. I just read an article in an online (reputable) newspaper about the accident but no real information about the cause. The article mentioned that the cylinder should have been heated to 80 deg. C to treat the material. Appearantly that has not been done during the recent maintenance cycle. But the article doesn't state whether not doing the heat treatment is part of the cause. Maybe it was deemed unnecessary and somebody who thinks otherwise has a huge 'I told them so' moment.
« Last Edit: December 22, 2022, 12:37:32 am by nctnico »
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Online EEVblog

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #102 on: December 22, 2022, 12:45:37 am »
What does this chappy know that everyone else in this thread hasn't already learned or postulated? This is "A Brit, curious about everything around him, lives in Germany and has a video camera", so appears to be just repeating whatever he's picked up from the likes of YouTube and news media. Just wondering why this one is picked vs the probably hundred or so others that weren't (many of which would have at least some engineering background to flaunt).

Meh, it just popped up on Youtube.
 

Online tom66Topic starter

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #103 on: December 22, 2022, 01:57:06 pm »


The architect (in ~2003) reckoned that you could shoot a bullet hole in the aquarium, and nothing but some water would leak out.  Catastrophic failure was "impossible".
 

Offline MK14

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #104 on: December 22, 2022, 02:26:42 pm »
The architect (in ~2003) reckoned that you could shoot a bullet hole in the aquarium, and nothing but some water would leak out.  Catastrophic failure was "impossible".

In the past, sometimes bridges have collapsed when there was wind of just the right frequency, so called unsinkable ships would sink (Titanic, although the true history, seems or might be that, that was not claimed).  I used to have or came across (if I remember right), some C or D cells (possibly Ray-O-Vac), which said something like 'Absolutely 100% Guaranteed Totally Leak-proof', with huge amounts of horrible brown (glue like) goo, coming out of them, like crazy.  Great pity I didn't photograph it!

Engineering is full of learning by dramatic failure.  Hindenburg Airship disaster, oops we shouldn't have used Hydrogen, it can burn/explode (the fuller details, with flammable outer coverings and war-regime NOT being allowed to purchase US Helium, Static electricity being able to set it on fire, via mooring ropes etc, are probably the real factors, especially).



« Last Edit: December 22, 2022, 08:47:23 pm by MK14 »
 
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Online ebastler

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #105 on: December 22, 2022, 02:50:28 pm »
You need to read the small print in that advert -- the claims clearly relate to "fresh Ray-O-Vac Flashlight Cells" only.  ;)
 
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Offline MK14

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #106 on: December 22, 2022, 03:17:07 pm »
You need to read the small print in that advert -- the claims clearly relate to "fresh Ray-O-Vac Flashlight Cells" only.  ;)

It's like some of the crafty/tricky (slightly bordering on dishonest) datasheet techniques, that manufacture's sometimes use, to make semi-exaggerated claims, about their devices.
 

Offline james_s

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #107 on: December 22, 2022, 06:47:46 pm »
The architect (in ~2003) reckoned that you could shoot a bullet hole in the aquarium, and nothing but some water would leak out.  Catastrophic failure was "impossible".

There have been many cases of "impossible" things happening. The Titanic sank, Flight 231 lost all 3 hydraulic circuits, and so on. It's easy to overlook a failure mode that bypasses all of the redundancy you engineered into something.
 
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Online SiliconWizard

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Re: Berlin AquaDom explosion - what went wrong?
« Reply #108 on: December 22, 2022, 07:16:41 pm »
The architect (in ~2003) reckoned that you could shoot a bullet hole in the aquarium, and nothing but some water would leak out.  Catastrophic failure was "impossible".

There have been many cases of "impossible" things happening. The Titanic sank, Flight 231 lost all 3 hydraulic circuits, and so on. It's easy to overlook a failure mode that bypasses all of the redundancy you engineered into something.

Yeah, that "impossible" statement is hilarious.
 


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