A 1,000 megawatt nuclear power plant creates about 200 kg of plutonium in a year. Such reactor grade plutonium would be sufficient to manufacture 47,000 bombs. A number of countries, including the UK, France and Japan, plan to extract the plutonium content from their used uranium fuel.
In 1999, human error was blamed for the temporary loss of a small quantity of plutonium from the nuclear research centre of the European Commission in Geel, Belgium. The plutonium, destined for France, turned up in Britain around one month after it went missing.