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European Heat Wave Shows Limits of Nuclear Energy

by Julio Godoy

PARIS - The extreme hot summer in Europe is restricting nuclear energy generation and showing up the limits of nuclear power, leading environmental activists and scientists say.

The heat wave since mid-June has led authorities in France, Germany, Spain and elsewhere in Europe to override their own environmental norms on the maximum temperature of water drained from the plants' cooling systems.

The French government announced July 24 that nuclear power plants situated along rivers will be allowed to drain hot water into rivers at higher temperature. The measure is intended "to guarantee the provision of electricity for the country," according to an official note.

France has 58 nuclear power plants, which produce almost 80 percent of electricity generated in the country. Of these, 37 are situated near rivers, and use them as outlet for water from their cooling systems.

The drought accompanying the hot summer has reduced the volume of water in the rivers, and might force some power plants to shut down.

Under normal circumstances, environment rules limit the maximum temperature for waste water in order to protect river flora and fauna.

"For many years now, French authorities have defended nuclear power arguing that it is clean energy, good for the environment, and that it will help combat global warming, for it does not emit greenhouse gases," Stephane Lhomme, coordinator of the environmental network Sortir du Nucleaire (Phase Out Nuclear Power) told IPS.

"Now, with global warming leading to extreme hot summers, we are witnessing that it is the other way round," Lhomme said. "Global warming is showing the limits of nuclear power plants, and nuclear power is destroying our environment."

During the hot summer of 2003, French authorities had allowed nuclear power ...

http://www.commondreams.org/headlines06/0728-06.htm

Nuclear Power is the Problem, Not a Solution

by Helen Caldicott

There is a huge propaganda push by the nuclear industry to justify nuclear power as a panacea for the reduction of global-warming gases.
In fact Leslie Kemeny on these pages two weeks ago (HES, March 30) suggested that courses on nuclear science and engineering be included in tertiary level institutions in Australia.

I agree. But I would suggest that all the relevant facts be taught to students. Mandatory courses in medical schools should embrace the short and long-term biological, genetic and medical dangers associated with the nuclear fuel cycle. Business students should examine the true costs associated with the production of nuclear power. Engineering students should become familiar with the profound problems associated with the storage of long-lived radioactive waste, the human fallibilities that have created the most serious nuclear accidents in history and the ongoing history of near-misses and near-meltdowns in the industry.

At present there are 442 nuclear reactors in operation around the world. If, as the nuclear industry suggests, nuclear power were to replace fossil fuels on a large scale, it would be necessary to build 2000 large, 1000-megawatt reactors. Considering that no new nuclear plant has been ordered in the US since 1978, this proposal is less than practical. Furthermore, even if we decided today to replace all fossil-fuel-generated electricity with nuclear power, there would only be enough economically viable uranium to fuel the reactors for three to four years.

The true economies of the nuclear industry are never fully accounted for. The cost of uranium enrichment is subsidised by the US government. The true cost of the industry's liability in the case of an accident in the US is estimated to be $US560billion ($726billion), but the industry pays only $US9.1billion - 98per cent of the insurance liability is covered by the US federal government. The cost of decommissioning all the existing US nuclear reactors is estimated to be $US33billion. These costs - plus the enormous expense involved in the storage of radioactive waste for a quarter of a million years - are not now included in the economic assessments of nuclear electricity.

It is said that nuclear power is emission-free. The truth is very different.

In the US, where much of the world's uranium is enriched, including Australia's, the enrichment facility at Paducah, Kentucky, requires the electrical output of two 1000-megawatt coal-fired plants, which emit large quantities of carbon dioxide, the gas responsible for 50per cent of global warming.

Also, this enrichment facility and another at Portsmouth, Ohio, release from leaky pipes 93per cent of the chlorofluorocarbon gas emitted yearly in the US. The production and release of CFC gas is now banned internationally by the Montreal Protocol because it is the main culprit responsible for stratospheric ozone depletion. But CFC is also a global warmer, 10,000 to 20,000 times more potent than carbon dioxide.

In fact, the nuclear fuel cycle utilises large quantities of fossil fuel at all of its stages - the mining and milling of uranium, the construction of the nuclear reactor and cooling towers, robotic decommissioning of the intensely radioactive reactor at the end of its 20 to 40-year operating lifetime, and transportation and long-term storage of massive quantities of radioactive waste.

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These unregulated isotopes include the noble gases krypton, xenon and argon, which are fat-soluble and if inhaled by persons living near a nuclear reactor, are absorbed through the lungs, migrating to the fatty tissues of the body, including the abdominal fat pad and upper thighs, near the reproductive organs. These radioactive elements, which emit high-energy gamma radiation, can mutate the genes in the eggs and sperm and cause genetic disease.

Tritium, another biologically significant gas, is also routinely emitted from nuclear reactors. Tritium is composed of three atoms of hydrogen, which combine with oxygen, forming radioactive water, which is absorbed through the skin, lungs and digestive system. It is incorporated into the DNA molecule, where it is mutagenic.

The dire subject of massive quantities of radioactive waste accruing at the 442 nuclear reactors across the world is also rarely, if ever, addressed by the nuclear industry. Each typical 1000-megawatt nuclear reactor manufactures 33tonnes of thermally hot, intensely radioactive waste per year.

Already more than 80,000 tonnes of highly radioactive waste sits in....

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http://www.commondreams.org/views05/0415-23.htm