Yohak

Archive for the ‘General’ Category

A Bend in the Road

In General on March 28, 2011 at 1:51 AM

This blog, Fukushima Facts, is going to be discontinued due a recent personal loss.

I’ll try to resume the task in the future.

Thanks to everybody interested in the blog.

WordPress: Technical Problems

In General on March 23, 2011 at 10:44 PM

Relevant News 19/03/2011

In General on March 19, 2011 at 2:58 AM
FUKUSHIMA LOCAL TIME UTC+9 – THE WORLD CLOCK [LINK]

Radiation hampers efforts to restore power to nuclear plant in Japan

THOMAS H. MAUGH II – LOS ANGELES TIMES – 18/03/2011 [LINK]

Radiation hampers efforts to restore power to nuclear plant in Japan

Japan raises nuclear alert level

RICHARD BLACK – BBC – 18/03/2011 – [LINK]

Japan raises nuclear alert level

Above Japan nuclear plant is a no-go for US Navy

ASSOCIATED PRESS – FOX.NEWS.COM – 18-03-2011 [LINK]

Above Japan nuclear plant is a no-go for US Navy

Operator of Japan’s endangered nuclear reactors now giving Twitter updates

AEMON MALONE – DIGITAL TRENDS -/03/2011 [LINK]

Operator of Japan’s endangered nuclear reactors now giving Twitter updates
The moment nuclear plant chief WEPT as Japanese finally admit that radiation leak is serious enough to kill people

DAILY MAIL REPORTER – DAILY MAIL – 18/03/2011 [LINK]

The moment nuclear plant chief WEPT as Japanese finally admit that radiation leak is serious enough to kill people

Experts knock notion of burying Japanese reactors

ASSOCIATED PRESS – THE WALL STREET JOURNAL – 18/03/2011 [LINK]

 

 

Japan raises nuclear alert level

What we know, and don’t know, about Japan’s reactors

In General, Timeline on March 17, 2011 at 7:36 AM

DAVID L. CHANDLER – MIT NEWS – 16/03/2011 [LINK]

A good overall presentation about Fukushima disaster basic points.  Very interesting the detailed information on coastal defences for the nuclear power plant.

 

 

[EXTRACTS]

There are a total of six reactors at the Fukushima Daiichi site about 134 miles northeast of Tokyo […] These were completed between 1970 and 1978 and were of “the first vintage” of boiling water reactors — a type that represents only about a third of U.S. reactors, but 60 percent of Japan’s 54 operating reactors.

 


The plant site, on a straight stretch of steep coastline, is fronted by an artificial port — a set of jetties and a seawall that was supposed to protect the plant from a tsunami two meters (about six feet) high, but was easily overtopped in this case by tsunami waves that have been reported to be about twice that height. It was the tsunami that caused the major problems: it disabled the backup diesel generators […]

 


If the fuel does fully melt, he said, it would “relocate downward,” where it would hit a pool of water at the base of the reactor building, which is there specifically to cool off the molten fuel in case of such an emergency. When the molten fuel reaches the water, Kazimi said, it would solidify again, where it could later be carved up and removed, as was done at Three Mile Island.


Analysis: Worst case nuclear cloud seen limited to Japan

In General, Radiation on March 17, 2011 at 3:54 AM

ALISTER DOYLE –  REUTERS – 16/03/2011 [LINK]

Another time “experts” are saying that the radioactive fallout couldn’t be as in Chernobyl. I suppose these experts are the same ones that explained how it was impossible a complete meltdown in a BWR reactor, that the spent fuel pools need a week to be emptied by the heat of the radioactive rods and the light water nuclear power plants can only emit low radiation in case of worst scenario.

Chinese and South Korean experts don’t think the same way as these countries are taking preventive measures in case of fallout.

A good point is taking a look at maps on radioactive fallout from Chernobyl. [LINK]

 


[EXTRACTS]

“In the worst case, a radioactive cloud would not go that far up in the atmosphere,” said Jan Beranek, head of environmental group Greenpeace’s International Nuclear Campaign.


Japanese nuclear workers emerging as heroes

In General on March 17, 2011 at 3:34 AM

CTV.CA NEWS STAFF –  CTV – 16/03/2011 [LINK]

50 or 70 men are not enough at Fukushima if they can’t control the situation in the coming days and radiation keeps on flowing , so it’s pretty sure TEPCO is searching for replacements in its other nuclear power plants.

 

 

[EXTRACTS]

TEPCO, the Tokyo Electric Company, has not provided any details about the men, so it’s not clear who they are. But nuclear power consultant Arnold Gundersen, a consultant who worked in American plants similar to Fukushima, says it’s  likely they include retirees and workers from unaffected plants who were called in to help.

He told The New York Times that plant managers “may also be asking for people to volunteer to receive additional exposure.”

 


The Ministry raised the maximum allowable exposure for nuclear workers to 250 millisieverts from 100 millisieverts. It described the move as “unavoidable due to the circumstances.” Still, even at 250 mSv, that’s still below the level at which people would show symptoms of radiation poisoning.

Dr. Lew Pepper, a professor at the Boston University School of Public Health who has studied the effects of radiation on nuclear weapons workers, notes that there’s only so much radiation that any one person can absorb.

“If they exceed a certain amount, they can’t go back in for a day or a week or longer,” he told The New York Times.

The workers are likely wearing full bodysuits and air packs to reduce the exposure. But Gundersen said some forms of radiation can penetrate any gear.


At Crippled Japanese Nuclear Plant, ‘Last-Ditch Effort’ To Prevent Meltdown

In General on March 15, 2011 at 7:54 AM

MARK MEMMOTT – NPR – 12/03/2011 [LINK]

Japan’s 8.9-magnitude earthquake sends tremors across markets

In General on March 15, 2011 at 7:50 AM

CARL BAGH – INTERNATIONAL BUSINESS TIMES – 12/03/2011 [LINK]

Japanese official says pumping system caused nuclear plant blast

In General on March 15, 2011 at 7:46 AM

THE CNN WIRE STAFF – CNN VIA 10 NEWS – 12/03/2011 [LINK]

Japan pressed for more blast detail

In General on March 15, 2011 at 7:39 AM

JAMES BLITZ & CLIVE COOKSON – FT.COM – 12/03/2011 [LINK]