Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
Display:
No, seriously, i miss the threads where we parsed the latest data, and they've been missing the past two weeks or more. I mean, so iodine's got a short half-life, does that mean the news dries up?

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Fri Jun 10th, 2011 at 04:05:13 PM EST
[ Parent ]
It's been missing for 4 weeks, actually...

Economics is politics by other means
by Migeru (migeru at eurotrib dot com) on Sat Jun 11th, 2011 at 02:42:13 AM EST
[ Parent ]
Japan Earthquake Registered Only 6.67 - Nuclear Induced Tsunami - Japan Offers Iran Enriched Uranium - An Act of War? - Japan: Knife At Its Throat : Abel Danger

2. Reactor 4 is building 7, demolished by explosives. [爆発物によって破壊された] Reactor 4 had been defueled and was undergoing replacement of it's internal stainless steel shroud, yet blew it's containment anyway. That is the FINAL smoking gun, an empty reactor is inert, and cannot produce an explosion, yet one happened at 4 that was so powerful it destroyed the structure leaving it in danger of falling over. Overheated open fuel pools cannot produce hydrogen because in an open fuel pool the water boils off at 100 Celsius, and won't be present in pressurized form at 2,000 degrees Celsius to liberate it's hydrogen by losing it's oxygen to the zircon cladding in the fuel rods. The rods will prefer the free oxygen in the air and burn long before attempting to claim the oxygen in whatever humidity there might be. The fact that the rods can catch fire only enforces the fact that they cannot release hydrogen in open air the way they can in a reactor. If you entertain the fantasy that they could, another problem against buildup presents itself - the hydrogen would be safely burned the moment it was created on the surface of the superheated rods. There would be no buildup. Fuel rods are many orders of magnitude below incapable of going supercritical also, even if totally melted down. The explosion at #4 was flatly impossible.

Reactor 4's dome was removed for defueling. Drone photos prove it. This dispels the rumors surrounding unit 4's explosion. Some people have said that this reactor was secretly in operation to enrich plutonium. This photo proves it was disassembled for shroud replacement as stated. Tepco is going out of it's way trying to explain the explosions, especially at reactor 4, because they did indeed occur, so an explanation is needed. As a result, they are giving reasons that cannot happen, just to say something.

have fun debunking, science wonks!

'The history of public debt is full of irony. It rarely follows our ideas of order and justice.' Thomas Piketty

by melo (melometa4(at)gmail.com) on Mon Jun 13th, 2011 at 08:52:57 AM EST
[ Parent ]
Just the title is hilarious... regarding the No. 4 hydrogen explosion, see upthread.

Overheated open fuel pools cannot produce hydrogen because in an open fuel pool the water boils off at 100 Celsius, and won't be present in pressurized form at 2,000 degrees Celsius to liberate it's hydrogen by losing it's oxygen to the zircon cladding in the fuel rods.The rods will prefer the free oxygen in the air and burn long before attempting to claim the oxygen in whatever humidity there might be.

Just to piece together all that has been mixed up above:

  • 2,000°C was the estimated maximum temperature of exposed fuel rods in the core of some of the reactors, not the reaction temperature of steam;
  • the zircalloy cladding starts reacting with water below 800°C,
  • unlike zirconium powder, zircalloy cladding will not burn (it will oxidise alright, but will not ignite even at melting temperature),
  • pressure is less relevant to reaction rate than density, and less density doesn't mean no reaction just slower reaction,
  • water evaporating from the pool and rising up in it is very well present to react with the fuel rods,
  • however, the current theory abiout the origin of the exploded hydrogen is no more the spent fuel pool (its evaporation wasn't as dramatic by the time of the explosion), but hydrogen from No. 3: the venting pipes of both No. 3 and No. 4 unite and exit into the same exhaust stack, thus part of the hydrogen exiting No. 3 could  flow 'in reverse' into No. 4.


*Lunatic*, n.
One whose delusions are out of fashion.
by DoDo on Mon Jun 13th, 2011 at 09:31:20 AM EST
[ Parent ]
What latest data are we going to parse if, as you say in the diary, there's "scarcity of news"?

Economics is politics by other means
by Migeru (migeru at eurotrib dot com) on Sat Jun 11th, 2011 at 02:43:18 AM EST
[ Parent ]
It's gone off the media radar. What sources do we have to, (bad pun alert), keep it on the boil?

This is a call for sources - who knows where we can continue to put together the Fukushima picture?

Otherwise, I was thinking of a post on the consequences for the nuclear industry in terms of risk assessment and costs. I'm not sure what can yet be said with any certainty, but I've posted and reposted this recent piece by Paul Gipe:

Nuclear power is expensive and uninsurable | Grist

The detailed study considered three forms of ownership: merchant plant, investor-owned utility, and publicly owned utility. Merchant plants are built to serve deregulated markets and assume a high degree of market risk. They may not be able to sell all their electricity at any one time if their price is too high. Investor-owned utilities are the traditional private companies serving a regulated market. In California, Pacific Gas & Electric and Southern California Edison are investor-owned. Publicly owned utilities are municipal utilities, like SMUD. Publicly owned utilities pay fewer taxes and have access to lower cost financing than either investor-owned utilities or merchant plants.

The CEC's 186-page report, "Comparative Costs of California Central Station Electricity Generation" [PDF], found that a 1,000-megawatt pressurized water reactor would generate electricity in 2018 from as little as $0.17 per kilowatt-hour to as much as $0.34 per kilowatt-hour. These results are startling: Most renewable technologies today, even solar photovoltaics (PV), generate electricity for less than that. Only a municipal utility could generate nuclear electricity for less than the cost of solar PV.

Currently, Germany pays between $0.31 and $0.41 per kilowatt-hour for electricity from solar PV, which means that the cost of solar-generated electricity today is equivalent to the cost estimated by the CEC for a nuclear plant beginning operation in 2018. And all observers, even critics, expect the cost of solar PV to continue declining during the next decade.

by afew (afew(a in a circle)eurotrib_dot_com) on Sat Jun 11th, 2011 at 08:36:32 AM EST
[ Parent ]
Paul called me a few weeks ago, and we discussed Germany. Glad he's staying on the case.

California under Brown (again!) will try to lead the way in amurka, and they're paying attention to what goes on here in 'Schland.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin

by Crazy Horse on Sat Jun 11th, 2011 at 10:38:32 AM EST
[ Parent ]
NHK World is still carrying Fukushima stories.

Obviously as the official news source there's some filtering.

But there does still seem to be real news about events at the plant.

by ThatBritGuy (thatbritguy (at) googlemail.com) on Sat Jun 11th, 2011 at 10:59:56 AM EST
[ Parent ]
Well theres still the odd piece coming out of NHK World

and physics forums has a long running thread which has most of the links, if you can cope with the arguments about wobbly walls or whether a reactor floor equipment piece is here or there on individual photos.

and there's also a  couple of other threads in the same place on politics and business effects of the earthquake and reactor problems

Any idiot can face a crisis - it's day to day living that wears you out.

by ceebs (ceebs (at) eurotrib (dot) com) on Sat Jun 11th, 2011 at 11:12:36 AM EST
[ Parent ]
Well at one point the Japanese government took over all press dealings from TEPCO, and they stopped a) giving out press releases in anything other than Japanese and b) inviting any non Japanese media to press conferences, since when people have been  trying to work out what is happening mainly from raw data in the Japanese releases, which appears to be too hard work for many journalists.

Any idiot can face a crisis - it's day to day living that wears you out.
by ceebs (ceebs (at) eurotrib (dot) com) on Sat Jun 11th, 2011 at 11:17:59 AM EST
[ Parent ]

Display:

Top Diaries

Impeachment gets real

by ARGeezer - Jan 17
25 comments

A Final Warning

by Oui - Jan 10
112 comments

Environment Anarchists

by Oui - Jan 13
4 comments

More Spanish repression

by IdiotSavant - Jan 6
8 comments

Occasional Series