Site-saving workers evacuated from Japanese reactor disaster
Site-saving workers evacuated from Japanese reactor disaster
If radiation drops, they will return.
16th March 2011 05:07 GMT nes
The Japanese government has ordered the evacuation of
the 50 remaining workers at the Fukushima Daiichi (No. 1) plant,
thus bringing at minimum a temporary halt to the efforts to cool
the distressed reactors at that increasingly troubled nuclear power plant.
"Chief Cabinet Secretary Yukio Edano said work on dousing reactors
with water was disrupted by the need to withdraw," reported New
Delhi Television and other news outlets.
TV quoted Edano as saying: "So the workers cannot carry out
even minimal work at the plant now. Because of the radiation risk,
we are on standby." Although the workers have been wi
"from 1,000 millisieverts on Wednesday morning to 600-800,"
according to the tv.japanese
The "standby" status follows a second fire at the plant's
No. 4 reactor, which broke out on Wednesday, Japan time. T
he International Business Times reported that that fire had
extinguished itself within a half an hour, but other reports
note that it is impossible to tell if the fire is extinguished,
due to the inability to get close enough to the radioactive
site to effectively inspect it.
disaster
If the pool in which reactor No. 4's fuel rods are currently
boiling away their protective water can be somehow refilled
perhaps from helicopters, although the roof of the building
housing that reactor unfortunately wasn't blown away in previous
mishaps, which would have allowed for water drops there's a
good chance that the reactor's fuel rods' ziconium tubes won't
burst.
If those tubes are not cooled, however, and do catch fire
and burst, they'd release the radioactive materials inside
them, which would engender a release of radioactivity "thousands
of times higher than the levels currently measured at the site,"
according to The Washington Post.
At this point in time, there's no way of knowing the pool's
condition. If the pool at reactor No. 4 is damaged and leaking,
it may be impossible to pour enough cooling water into it to
keep the fuel rods covered and cooled.
At reactors Nos. 5 and 6, to make matters worse, the water
level is also dropping: the International Atomic Energy
Agency reported at 3:55 UTC on Wednesday (11:55pm Tuesday
in New York) that the water level in the containment pool
in reactor No. 5 was "201 cm above the top of the fuel.
This was a 40 cm decrease since 07:00 UTC of 15 March."
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