A useful rule of thumb for gauging the proliferation potential of any given reactor is that<strong> 1 megawatt-day (thermal energy release, not electricity output) of operation produces 1 gram of plutonium in any reactor using 20-percent or lower enriched uranium; consequently, a 100 MW(t) reactor produces 100 grams of plutonium per day and could produce roughly enough plutonium for one weapon every 2 months. </strong> Light-water power reactors make fewer plutonium nuclei per uranium fission than graphite-moderated production reactors. <br /> <br /> <br /> <br /> Although it seems like I am wrong about the light water reactor being the more dangerous one. <br />
