General > General Technical Chat
Berlin AquaDom explosion - what went wrong?
Haenk:
I suspect cleaning, creating micro-scratches. Inside and outside. Acryl is not that tough and will scratch easily, even more so if being cleaned/wiped for many years.
Stray Electron:
The first question I would ask is what did they mean by "modernize"? And exactly what was done when they did?
Given the amount of counterfeit materials (cleaners, adhesives, fasteners, etc) coming out of China and SE Asia today, I wouldn't be surprised to find that some of that was at fault.
I talked to a friend of mine that used to do failure analysis for a US Gov military contractor about this incident and he told me that they had a big problem with people using a product call "Chloro-clean" and that it destroyed some plastics within days and also would creep in past the seals in diodes and other electronic devices and would destroy them as well.
tom66:
I wonder if "modernize" is a poor translation. I have heard other Europeans use that word when they mean "refurbish". As far as I know they didn't replace the actual panels themselves. That would require the roof structure to be removed (at the very least) and would be extremely disruptive.
ebastler:
--- Quote from: tom66 on December 19, 2022, 03:30:21 pm ---I wonder if "modernize" is a poor translation. I have heard other Europeans use that word when they mean "refurbish". As far as I know they didn't replace the actual panels themselves. That would require the roof structure to be removed (at the very least) and would be extremely disruptive.
--- End quote ---
Here's a short interview which describes the scope of the works - unfortunately German only: https://www.domaquaree.de/de/Modernisierung-AquaDom.html
It is indeed "refurbishment" rather than modernization: They removed the old silicone seals, polished and re-sealed the acrylic, and overhauled the elevator. The interview stresses a couple of times that there was a risk of the 20 cm thick acrylic drying out if it is no longer in contact with water from the inside, which could cause cracks. They applied adhesive foils films to the acrylic to avoid this.
(Edit: "Films" it is -- thanks tooki!)
iMo:
This kind of funny stuff like the AquaDom shall be designed and constructed such way that in case of a failure the water has the free way to escape without causing catastrophic damages or dead bodies. An assumption such that specific construction will last forever would be pretty naive one, imho..
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