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No chance of Czech nuclear plant meltdown - report
Index:
No chance of Czech nuclear plant meltdown - report
Czech Plant's Environmental Impact Rated Acceptable
New method to predict plutonium stability
All calm as German nuke train reaches French plant
Japan, U.S. discuss notification of nuclear-powered sub stops
======================================
No chance of Czech nuclear plant meltdown - report
PRAGUE, April 11 (Reuters) - A Czech-led independent commission on
Wednesday said its study shows the controversial Soviet-designed
Temelin nuclear power plant is safe and that there is no possibility
of a Chernobyl-style meltdown.
The study, which included observers from the EU, Austria and Germany,
gave Temelin high marks in an environmental impact study ordered by
the Czech government in January after demands from neighbouring
Austria.
"Overall, the commission unambiguously agreed that the impact of the
Temelin nuclear plant on the environment is low, not significant and
acceptable, both under normal operation and in the case of
accidents," the report said.
The study ruled out the possibility of a Chernobyl-style meltdown at
the Czech plant, due to construction differences such as a graphite
moderator in the Chernobyl plant and a water moderator at the Temelin
plant.
"There are of course several other differences, but already from
these it is apparent that what happened at Chernobyl could not be
repeated in Temelin," the report said.
Last year's launch of testing operations at the plant was fiercely
opposed by Austria, which considers it unsafe despite being fitted
with modern U.S. control systems.
Since the launch Temelin, located less than 50 km (30 miles) from the
Austrian border and around 200 km from the Czech capital Prague, has
been shut several times during testing due to various problems which
officials have called normal in the start up of a plant.
None of the problems have involved any leaks of radioactive materials
and plant operator CEZ(CEZPsp.PR) hopes to have the first of two
blocs in full operation this summer.
While Austria took part in observing the methods used to carry out
the study, it still has complaints about the plant.
The study, which will form the basis for further discussions between
Czech Prime Minister Milos Zeman and Austrian Chancellor Wolfgang
Schuessel in May, strictly adheres to European directives on the use
of atomic power, said commission member Miroslav Martis.
In addition to evaluating environmental impact arising under normal
operation, the study carried out computer models of what would happen
in the event of accidents.
"Even though it was outside the scope of the study, we let the
reactor melt down, we let the water container around it crack and we
modelled what happens," Martis said.
In the case of an extreme accident, areas within three to five km of
the plant would be levelled and areas between 13 and 14 km could be
affected by radiation, he said.
"We stayed inside a 13-kilometre zone (for radiation contamination)
and nothing got out," he said.
The report chided officials for secrecy surrounding the plant and its
operations, saying more openness would help both sides.
--------------
Czech Plant's Environmental Impact Rated Acceptable
Prague, April 11 (Bloomberg) -- The new Czech nuclear plant in
Temelin has a ``low, insignificant and acceptable'' environmental
impact, though it impairs the character of the countryside, according
to an international environmental-impact assessment.
The plant scheduled to begin commercial operations this summer, will
have little effect on the quality of air, water and climate in the
region, though its structure hurts the character of the countryside,
according to the report commissioned by the Czech and Austrian
governments and released last night.
The $2.5 billion Temelin nuclear power plant is located in the
southern Czech Republic about 70 kilometers north of the Austrian
border and is being completed by state-owned power utility CEZ AS.
The start-up of the plant's first reactor in October sparked protests
from Austria.
``This is a purely expert commission and it won't be engaged in the
political aspect of the power plant,'' said the committee member Jiri
Hanzlicek. The report should serve as a working paper for further
negotiations on the Temelin plant between Czech and Austrian prime
ministers, he said.
The plant poses little direct threat to local residences other than a
negative psychological impact, according to the report prepared by
representatives from the Czech Republic, Austria, Germany and the
European Union. The assessment was performed under international
standards, the report said.
After delays and budget overruns, the first block of the Temelin
plant began trial operations in October, sparking protests from
Austria that culminated in border-crossing blockades.
Czech and English versions of the study are available on the official
Internet sites of the Czech Foreign Ministry.
------------
New method to predict plutonium stability
LONDON (Reuters) - In a finding that could lead to safer handling and
storage of nuclear weapons, scientists in the United States said
Wednesday they have devised a new method to predict the physical
properties of plutonium.
Scientists at Rutgers University in New Jersey used analytical and
computer calculations to predict changes in the structure of the
solid states of plutonium from a dense, unstable phase to a safer
state.
"The potential decomposition into the unstable phase over time is a
matter of concern in old, stored nuclear warheads, where this could
ultimately result in changes in the mass that could lead to a chain
reaction," said Gabriel Kotliar, a professor at the university.
With stockpiles of plutonium-based weapons stored around the world,
effectively predicting stability changes is of international
importance.
In a report in the science journal Nature, Kotliar and his colleagues
Sergej Savrasov and Elihu Abrahams describe their new technique, the
first in 30 years, which is a potential landmark achievement in solid-
state physics.
"While the search for answers about plutonium phases generally has
been through experimental methods, we employed analytical and
computer calculations to predict changes in the structure of the
solid states of plutonium," Kotliar explained.
The scientists used a U.S. Department of Energy supercomputer and a
grid of 80 computer processors to predict the volume and stability
changes between the different phases of the element.
"We are dealing with an extremely delicate balance between the two
phases, and which one wins and when this happens is information that
is necessary to assure the safe storage of this important material,"
Kotliar added.
Plutonium, an artificial element that was made for the first time in
1940, is one of the most mysterious, toxic and dangerous substances
known. It is dangerous to handle, difficult to store and impossible
to dispose of.
The silvery-white radioactive element occurs only rarely in nature
and is produced synthetically from uranium. Plutonium has a half-life
of 24,000 years, which means it loses only half its radioactivity
over that period.
Traces of plutonium in depleted uranium (DU) weapons used by NATO-led
forces in the Balkans have aroused fears that the armour-piercing
weapons could pose a health risk but defense experts have played down
any potential dangers.
--------------
All calm as German nuke train reaches French plant
ROUEN, France (Reuters) - A trainload of nuclear waste that unleashed
several protests on its way from southern Germany to a reprocessing
plant in northwestern France reached its destination Wednesday with
no demonstrators in sight.
The train arrived more than three hours late at Valognes, the
railhead where five massive containers holding the waste will be
switched to trucks to be brought to the plant at La Hague near
Cherbourg, the state railway SNCF said.
In contrast to the clashes between police and protesters as it
crossed Germany Tuesday, the train met few protests as it rumbled
across northern France on its way to the reprocessing plant in
Normandy that was guarded by about 250 employees.
The most dramatic protest took place in the Normandy town of Caen,
where the train was delayed for half an hour while police cut free
four demonstrators chained to the rails.
"La Hague - the garbage can overflows," read a banner held up by
their supporters protesting against the resumption of the French-
German waste shipments suspended in 1998 over fears of radiation
leakage.
France sent reprocessed nuclear waste back to Germany last month,
sparking big protests by anti-nuclear groups and clashes with police
along that train's route to Gorleben in northern Germany.
"After the return of the treated waste 15 days ago and all the nice
speeches about national responsibility (for nuclear waste), more
waste has come back again," said Frederic Marillier from the French
branch of the environmental group Greenpeace.
"As a result, La Hague is even fuller than before."
NUCLEAR GARBAGE DUMP
The environmentalist movement here fears that France could become a
"nuclear garbage dump" for waste from other countries if it keeps
accepting spent fuel for reprocessing in La Hague.
The French and German governments agreed last January to resume the
transports, including deliveries of fresh waste being held until now
at the German nuclear plants that produced it.
About 250 employees gathered outside the gates to the La Hague plant
to ensure that anti-nuclear protesters could not block the entry of
the nuclear waste containers, a spokesman for the Cogema nuclear
processing agency said.
But no protesters were near the plant or near the railway station,
officials said, adding that Cogema might take several days to unload
the five containers from the train at Valognes and move them by truck
to nearby La Hague.
Environment Minister Dominique Voynet told France Inter radio that
Germany, which agreed in January to take back reprocessed waste after
a three-year gap, was sending its waste to France to solve a
political problem at home.
"The reprocessing of waste is not the priority for the German nuclear
industry, we have to be aware of that," she said.
OFFICIALS JOIN PROTESTERS
At several points along the French railway, local officials joined
the handfuls of protesters and complained they had not been informed
about the hazardous waste being shipped through their communities.
Alain Rist, vice-president of the regional council in the greater
Paris region, was with protesters who held up the train for 45
minutes at Conflans-Sainte Honorine, not far from the affluent
northwestern suburb of Saint Germain en Laye.
"There was no information from public authorities to the
municipalities in question," he told journalists. "This is a
transport of very dangerous material. It's scandalous."
Voynet, who plans to leave the cabinet this summer to work full-time
as head of her Greens Party, said: "The absence of transparency
remains the rule despite efforts that have been made in the past few
years."
--------------
Japan, U.S. discuss notification of nuclear-powered sub stops
TOKYO, April 11 (Kyodo) - Japan and the United States could not come
up with specific measures Wednesday to improve the prior notification
system for port calls to Japan by U.S. nuclear-powered submarines,
Japanese Foreign Ministry officials said.
In expert-level talks of a bilateral committee concerning U.S.
military forces in Japan, held at the ministry, the two sides decided
to continue discussions at the next meeting, whose schedule has not
yet been set, the officials said.
The talks follow a decision last week by the committee to discuss
ways to ensure the U.S. Navy gives proper advance notice in the wake
of the nuclear sub Chicago's entering Sasebo port in Nagasaki
Prefecture without notification April 2.
The U.S. Navy has been giving advance notice of at least 24 hours for
port calls by nuclear-powered vessels to Japan since the first such
visit in November 1964 to facilitate preparations by local
governments to measure radioactivity before and after the sub's stop.
Japan is hoping to formalize the arrangement by exchanging documents
on the matter, ministry officials said earlier.
The U.S. apologized for the Chicago's surprise entry to Sasebo port,
explaining it was caused by an administrative error in which the U.S.
Navy mistook the planned docking location of the sub as outside the
harbor and relayed the wrong information to the Japanese government.
Sasebo Mayor Akira Mitsutake, however, has expressed anger over the
mishap, saying the city wants to ask the U.S. Navy not to make port
calls by its nuclear-powered subs at Sasebo until an effective
improvement measure is in place.
------------------------------------------------------------------------
Sandy Perle Tel:(714) 545-0100 / (800) 548-5100
Director, Technical Extension 2306
ICN Worldwide Dosimetry Service Fax:(714) 668-3149
ICN Pharmaceuticals, Inc. E-Mail: sandyfl@earthlink.net
ICN Plaza, 3300 Hyland Avenue E-Mail: sperle@icnpharm.com
Costa Mesa, CA 92626
Personal Website: http://sandyfl.nukeworker.net
ICN Worldwide Dosimetry Website: http://www.dosimetry.com
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