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Nuclear Monitor #603

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This February 2004 issue of the Nuclear Monitor analyzes the nuclear weapons proliferation risks linked to the ITER fusion reactor project and fusion research. It also covers the nuclear proliferation network connected to Pakistan's Dr. A.Q. Khan and Dutch entities, updates on Germany's radioactive waste disposal challenges at Gorleben and Konrad, and the legal and political controversies surrounding the Private Fuel Storage (PFS) high-level radioactive waste dump on Native American lands in Utah.
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Page 1 - Overview and The Proliferation Risks of ITER

#603 February 13, 2004 NUCLEAR MONITOR A Publication of World Information Service on Energy (WISE) and the Nuclear Information & Resource Service (NIRS), incorporating the former WISE News Communique IN THIS ISSUE: The proliferation risks of ITER 1 Khan: the Dutch connection 4 Germany's half-hearted approach to waste disposal 5 PFS dump crawls ahead despite tribal meltdown 7 In brief 10 THE PROLIFERATION RISKS OF ITER The decision regarding where the new International Thermonuclear Experimental Reactor (ITER) will be located, Cadarache (France) or Rokkasho Mura (Japan) is expected to be resolved when ITER partners meet (at a yet unknown date). Dr. Andre Gsponer and Dr. Jean-Pierre Hurni, director and senior researcher at the Swiss based Independent Scientific Research Institute (ISRI), have published a report on the proliferation aspects of ITER and fusion research. (603.5574) WISE Amsterdam – There are several valid arguments against the construction of the ITER reactor and continued research into fusion energy; tremendous costs, safety risks, radioactive waste to name a few. The ISRI researchers focussed on the strategic-political and military-technical implications of the fusion research and reviewed two aspects of the proliferation risk: the availability of tritium, which can be used both in fusion reactors and nuclear weapons, and scientific knowledge on fusion physics. Tritium and nuclear weapons The oldest design for nuclear weapons consists of pure high-enriched uranium and/or plutonium materials. The Nagasaki bomb for instance contained 6 kilograms of plutonium and 120 kilograms of uranium; to compress the materials and start the chain reaction, 2,500 kilograms of high explosives surrounds the nuclear core making the bomb large (1.3 meters), heavy (about 3,000 kilograms) and deliverable by airplane only. “Boosting” technology has made it possible to decrease the weight and size of a weapon. Its core materials remain the same but prior to detonation, the center is injected with a mixture of deuterium-tritium gas. Compressed by chemical explosives, an initial chain reaction begins with subsequent X-rays and neutrons heating the gas at the center. The pressure and temperature of the gas is sufficient to start the fusion reaction, the mixture rapidly burns out generating an intense pulse of neutrons. These fusion neutrons cause the rest of the core to fission, which generates most of the yield of the explosion. In “boosted” bombs, fusion is used to produce neutrons for fission making them very different from powerful “hydrogen” or “thermonuclear” bombs where fusion itself is more important and causes the main yield. A few grams of tritium are sufficient to “boost” bombs made of a few kilograms of military- or reactor-grade plutonium making them smaller and lighter than conventional designs and deliverable by missiles instead of bomber planes. “Boosted” bombs contain only 4 kilograms of plutonium or 12 kilograms high enriched uranium, weighs less than 100 kilograms and is about 30 centimeters in diameter. Their reduced size and weight also makes these weapons a terrorists object of desire given that they could be deliverable using a vehicle and do not require testing. “Boosted” bombs can be perceived as ‘user friendly’ in that the prospect of accidental nuclear explosion is considered near impossible. In storage, the deuterium-tritium gas is contained in a separate reservoir outside the core, should an accidental explosion of the chemical explosives components occur, the relatively small amounts of plutonium or uranium involved would not be sufficient for a full nuclear explosion. This means that reactor-grade plutonium, which is relatively unstable and prone to spontaneous fission, could be utilized at significantly reduced risk given the small amounts of material required in a “boosted” bomb. “Boosting” is essentially used all modern nuclear weapons, including those in Israel, India, Pakistan and possibly North Korea. The development of “boosted” bombs thus confirms the tremendous importance of tritium to the issue of non-proliferation of fission weapons.

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This February 2004 issue of the Nuclear Monitor analyzes the nuclear weapons proliferation risks linked to the ITER fusion reactor project and fusion research. It also covers the nuclear proliferation network connected to Pakistan's Dr. A.Q. Khan and Dutch entities, updates on Germany's radioactive ...