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http://www.cea.fr/fr/sciences/dechets_radioactifs/

Facile de trouver des infos.

Juste un détail en ce qui concerne le Plutonium... Le plutonium est un poison violent pour l'organisme, qu'il soit radioactif ou non. L'équivalent d'une pièce de 50 cents de poudre dans une pièce tuerait 20 personnes en quelques minutes à  peine. Donc de là  à  avoir peur d'une irradiation... Ce n'est vraiment pas le plutonium le plus dangereux dans le nucléaire, il n'est presque plus utilisé pour cette raison.

Trouvé sur wikipedia :
<!-- m --><a class="postlink" href="http://en.wikipedia.org/wiki/Plutonium">http://en.wikipedia.org/wiki/Plutonium</a><!-- m -->

Un p'tit extrait :

All isotopes and compounds of plutonium are toxic and radioactive. While plutonium is sometimes described in media reports as "the most toxic substance known to man", there is general agreement among experts in the field that this is incorrect. As of 2003, there has yet to be a single human death officially attributed to exposure to plutonium itself (with the exception of plutonium-related criticality accidents). Naturally-occurring radium is about 200 times more radiotoxic than plutonium, and some organic toxins like Botulin toxin are still more toxic. Botulin toxin, in particular, has a lethal dose of 300pg/kg, far less than the quantity of plutonium that poses a significant cancer risk. In addition, beta and gamma emitters (including the C-14 and K-40 in nearly all food) can cause cancer on casual contact, which alpha emitters cannot.

When taken in by mouth, plutonium is less poisonous (except for risk of causing cancer) than several common substances including caffeine, acetaminophen, some vitamins, pseudoephedrine, and any number of plants and fungi. It is perhaps somewhat more poisonous than pure ethanol, but less so than tobacco; and many illegal drugs (some such as marijuana are negligibly poisonous). From a purely chemical standpoint, it is about as poisonous as lead and other heavy metals.