nuclear-news

Fukushima will become a radioactive no man’s land

Even after a cold shutdown, scrapping the plant will likely take decades, and the site will become a no-man’s land.

Tonnes of nuclear waste sit at the site of the nuclear reactors, and enclosing the reactors by injecting lead and encasing them in concrete would make it safe to work and live a few kilometres away from the site, but is not a long-term solution for the disposal of spent fuel, which will decay and emit fission fragments over tens of thousands of years.

‘No safe levels’ of radiation in Japan,  Al Jazeera 5 April 11“……Japanese officials conceded to the public on March 31 that the battle to save four crippled nuclear reactors at the Fukushima Daiichi nuclear plant has been lost. On March 29 a US engineer who helped install the reactors at the plant said he believed the radioactive core in unit No. 2 may have melted through the bottom of its containment vessel and on to a concrete floor.
Tepco’s chairman, Tsunehisa Katsumata, said they had “no choice” but to scrap the No’s 1-4 reactors, but held out hope that the remaining two could continue to operate, despite the fact that he admitted the nuclear disaster could last several months. It is the first time the company has admitted that at least part of the plant will have to be decommissioned.

But the government’s chief spokesman, Yukio Edano, repeated an earlier call for all six reactors at the 40-year-old plant to be decommissioned. “It is very clear looking at the social circumstances,” he said.

Even after a cold shutdown, scrapping the plant will likely take decades, and the site will become a no-man’s land.

Tonnes of nuclear waste sit at the site of the nuclear reactors, and enclosing the reactors by injecting lead and encasing them in concrete would make it safe to work and live a few kilometres away from the site, but is not a long-term solution for the disposal of spent fuel, which will decay and emit fission fragments over tens of thousands of years.

Near the plant, the radiation levels dangerously escalated to 400 milliseiverts/hour. Considering background radiation is on the order of 1 milliseivert per year, this means a yearly background dose every 9 seconds, based on industry and governmental “allowable” radiation exposure limits.

That compares with a national “safety standard” in the U.S. of 250 millisieverts over a year. The U.S. Environmental Protection Agency says a single dose of 1,000 millisieverts is enough to cause internal hemorrhaging……
‘No safe levels’ of radiation in Japan – Features – Al Jazeera English

April 5, 2011 - Posted by Christina Macpherson | - Fukushima 2011, Japan