Recent content by artax
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Schlieren Optics Homework Help: Visualizing a Supersonic Wind Tunnel
Hello Harry, How are you getting on?...I think you would be better off with a brighter light source and a smaller pinhole . Have you tried White LED's? You will also need to get the room really dark. I don't know the power of your halogen bulb or your pinhole size. This looks very similar to...- artax
- Post #5
- Forum: Engineering and Comp Sci Homework Help
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Good post. I wonder what Tcups is busy on?- artax
- Post #9,238
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Yes... a very telling pointer as to how they're still battling, and haven't had the time to really think ahead. It's been out of the main news for a good while but something will give. So three reactors have melted through the 6inch thick steel pressure vessels. and corium is all over the...- artax
- Post #9,236
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Excellent find those,... It would be nice in english.- artax
- Post #7,852
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
From the map it looks like units 1 and 3 ejected 'rubble' that is 300 to 400 mS/Hr. Has anyone speculated yet what this rubble is and why it is contaminated? What parts of a reactor would be radioactive to this extent? Or are these 'rubbles' piles of concrete containing bits of spent fuel...- artax
- Post #7,851
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
a bit of an update on allthingsnuclear from yesterady. http://allthingsnuclear.org/- artax
- Post #7,690
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
some interesting stuff here http://online.wsj.com/article/SB10001424052748704281504576329011846064194.html I'd hope they release these documents and I'd like to see the whiteboard scribblings from the time prior to the explosions! The continuing conflicting reports about the situation are a...- artax
- Post #7,681
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
TBH I am having second thoughts based on some images posted earlier of it not being there before the explosion but I still think it very unlikely. If you look at the pipe coming out of the end of the cream/yellow cylinder, it is bent vertically downwards. The bend is a manufactured bend and I...- artax
- Post #7,676
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Hey Madder, the chances of a ballistic object landing in that configuration, parallel with anything and just a foot away from a wall,... and not deforming it's shape are quite frankly near zero. C'mon... it was installed there before anything happenned.- artax
- Post #7,543
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
HEllo, Yes, the Russians learned a lot and should have been consulted earlier,... though as I understand it the mechanisms and type of cleanup needed are very different. There's a good vid on YT that says they eventually pumped Liq. N2 into the ground under the reactor,... and the evaporating N2...- artax
- Post #7,542
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
this stuff is still on the TEPCO site too!... guess removing it isn't top of their list of priorities! 1. Measures to prevent unexpected events * All designs provide margins of safety capable of withstanding even natural disasters. * Strict quality control at every stage, from design...- artax
- Post #7,459
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Yes, very shocking, and I read a while back that the summer winds are usually from the East, but haven't changed yet!- artax
- Post #7,074
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Very interesting... I also read earlier today that "there is likely a few cm hole in the RPV [unit 1] from where the water is leaking" or words to that effect... I'll have a look for it, I was reading the latest Guardian report... then followed a few links I think.! there's a different report...- artax
- Post #7,063
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
Does anyone have a link to a slo mo video or the still frames of the unit 3 explosion, I've just been watching it and there's a lot of info in there. T cups has analysed it in detail... I just haven't had a good video till the one I posted last page. And I've just realized you can almost go...- artax
- Post #7,053
- Forum: Nuclear Engineering
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Japan Earthquake: Nuclear Plants at Fukushima Daiichi
I'm sorry Anton, but we're simply talking density here, roof sheets would have been carried with the wind much more than that piece that came straight down back on the building. That piece has to be many tons.- artax
- Post #7,048
- Forum: Nuclear Engineering