General > General Technical Chat

Berlin AquaDom explosion - what went wrong?

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Barny:
My guess is that some cleaning company used an alcohol based cleaning agent.
Or some diligent person desinfected EVERY surface.

The fumes of disinfectant could also added to the disaster to.

AndyBeez:
One assumption is the aquarium burst at the bottom of the tank. The break may have been higher up, causing the acrylic to unzip in a catastrophic failure. The 'nitch' that broke it may even have been on the very top edge. Going unnoticed for days/weeks, the near invisible crack propogated slowly downwards, until reaching the depth where load exceeded strength.

Only the fish know the truth, and they ain't here to talk :-X

amyk:

--- Quote from: ebastler on December 18, 2022, 09:03:46 am ---
--- Quote from: tom66 on December 18, 2022, 12:04:41 am ---
--- Quote from: MrMobodies on December 17, 2022, 07:57:06 pm ---So it was -10c before the explosion but that is speculation.

--- End quote ---

This is speculation I think which originated from the police, but I am sure the lobby area was heated somewhat; to not do so would be greatly uncomfortable for anyone walking through.  However, it *is* conceivable, due to the current price of energy, that the heating was reduced.  So perhaps instead of 20C, with a 6C delta between the inside and outside, maybe the lobby was kept around 15C, and maybe colder overnight?  I am not sure what the law is in Germany, but there was something about public buildings being restricted for heating in winter due to gas shortages, maybe this applied to hotels too? 

--- End quote ---

More speculation. There was a large bar and café in that lobby, right beneath the aquarium. People were meant to sit there, eat and drink and be comfortable. Rest assured that it was not at 15°C.
--- End quote ---
I think what he's saying is that they could've adjusted the thermostats to a lower setpoint during the night in order to save heating costs when there might not be people in the lobby, leading to more thermal cycling.

EEVblog:

SiliconWizard:
This is a fish genocide.

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