From Enenews
Regulators confirm level 1 incident at Kashiwazaki-Kariwa plant
Regulators confirm level 1 incident at Kashiwazaki-Kariwa plant
Kyodo
(via Enenews),
19
December, 2012
TOKYO,
Dec. 19, Kyodo
Japan's
nuclear regulatory authority said Wednesday that recently confirmed
trouble with fuel rods stored in a spent nuclear fuel pool at Tokyo
Electric Power Co.'s Kashiwazaki-Kariwa plant is a level 1 incident
on a 7-point international scale.
A
pair of fuel rods was touching as a result of deformation in the
bundle of fuel rods, leading the Nuclear Regulation Authority to
determine that the fuel had likely been loaded to the reactor core
"in an abnormal situation." The NRA's assessment of the
incident is provisional.
According
to the NRA, the flow of the coolant water through the bundle of fuel
rods could be hampered if rods stick together, making it easier for
heat to accumulate. The authority, however, said no leakage of
radioactive substances was observed.
✔
Regulators
confirm 'level 1' incident (on 7 level scale) at TEPCO nuclear plant
in west Japan. Deformed fuel rods stuck together in pool
Japan
Experts: Active fault runs underneath MOX fuel plant — Warnings of
massive quake
Phys.org
(via Enenews)
19
December, 2012
Enlarge
Canisters containing spent nuclear fuel are carried on trailers to
the nuclear reprocessing plant at Rokkasho village in Aomori
prefecture, 600km north of Tokyo, on December 19, 2000. Japan's only
reprocessing plant for spent nuclear fuel could sit on an active
seismic fault vulnerable to a massive earthquake, experts warned
Wednesday.
Japan's
only reprocessing plant for spent nuclear fuel could sit on an active
seismic fault vulnerable to a massive earthquake, experts warned
If
regulators agree they will have to order its closure and Japan would
be without any recycling capacity of its own, a government official
told AFP on condition of anonymity.
This
would leave it dependent on other countries and with no way to deal
with waste from the Fukushima plant crippled by last year's
earthquake and tsunami.
Yasutaka
Ikeda, assistant professor of geomorphology at Tokyo University, said
a nearly 100-kilometre (60-mile) fault runs under the Rokkasho
reprocessing plant in northern Japan.
"Even
though experts' opinions are divided on whether this fault is active
or not, I think the possibility of it being an active fault is
extremely high, given the evidence," Ikeda told AFP.
"This
fault could cause an 8-magnitude earthquake, so any nuclear-related
facilities in the region are in danger," he said, referring to
the Shimokita Peninsula where the Rokkasho plant is located.
Mitsuhisa
Watanabe, professor of geomorphology at Tokyo University, separately
told Wednesday's Tokyo Shimbun that part of an active fault runs
directly under the Rokkasho plant, warning it is likely to move when
the bigger fault moves.
Japan's
only plant to extract plutonium and uranium from spent nuclear fuel
at Rokkasho village in Aomori prefecture, northern Japan, pictured on
March 31, 2006. Japan's only reprocessing plant for spent nuclear
fuel could sit on an active seismic fault vulnerable to a massive
earthquake, experts warned Wednesday.
Active
faults are those that, amongst other things, have moved within the
past 120,000-130,000 years. Under government guidelines atomic
installations cannot be sited on a fault if it is still classed as
active.
The
comment came days after government-appointed experts found that a
nuclear power plant in the same region may sit atop an active seismic
fault.
A
panel appointed by the Nuclear Regulation Authority (NRA) said Friday
fractures in the earth beneath the Higashidori plant's compound on
the peninsula may be active faults, meaning it would likely have to
be scrapped.
An
unfinished nuclear fuel storage facility is also on the peninsula, in
addition to the recycling plant and the Higashidori power plant. It
is also home to another part-built atomic power plant
A
NRA official told AFP Wednesday the nuclear watchdog "may have
to consider whether to conduct additional research at Rokkasho, but
for the time being we will watch that being carried out by the plant
operator."
Operator
Japan Nuclear Fuel said last month it would conduct more research on
the fault, but a spokesman said the purpose is to back up its claim
that the seismic fault is not active. Resource-poor Japan has poured
billions of dollars into a nuclear fuel recycling programme, in which
uranium and plutonium are extracted from spent fuel for reuse in
nuclear power plants.
All
but two of Japan's nuclear reactors remain offline after being
shuttered for regular safety checks after the meltdowns at Fukushima.
They must get the go-ahead from the newly-formed NRA before they can
be restarted.
The
only working reactors are at Oi in the west, but experts including
Watanabe are investigating whether the fault that runs underneath it
is active.
Hundreds
of thousands were made homeless by the Fukushima accident, and tracts
of prime land were left unfarmable after radiation spread across a
large area.
Anti-nuclear
sentiment has run high in Japan, which used to rely on atomic power
for around a third of its electricity needs. However, it did not
translate into votes for anti-nuclear parties in the weekend
election.
Japan Officials: Ground subsidence spreading after quake — Concern about sinking buildings being damaged — Only an inch can jeopardize stability (VIDEO)
18
December
Title:
Quake-caused subsidence spreads
Source:
NHK WORLD English-
Date:
Dec. 17, 2012
The
Environment Ministry says nearly 6,000 square kilometers of land
across Japan have subsided by more than 2 centimeters in the last
fiscal year. [...]
This
level is judged to have a potential impact on buildings’ stability.
The
ministry says Kesennuma in Miyagi Prefecture sank deepest by 73.8
centimeters, followed by Ichikawa in Chiba by 30.9 centimeters
[Fukushima Prefecture NOT tested]
The
ministry officials say the subsidence is attributable to last year’s
March 11th earthquake. They have expressed concerns over the spread
of subsidence and further damage to buildings.
Watch
the video HERE
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