The source term means the actual amount and nature of the radioactive release, which would be highly dependent on the scale and specifics of the damage caused (for example at Chernobyl the explosion, caused by it being a bad/unstable design, blasted a plume into the air – whereas at Fukushima there wasn’t the same power to send things over a wide range). “In a nuclear incident much depends on the “source term” and prevailing conditions (the latter being mostly the weather). However, nothing is indestructible, and sufficiently powerful and sustained targeted attacks would eventually break through. They are designed to withstand aircraft impact, earthquakes, explosions, and similar. These are a concrete containment (metres thick of concrete) and a steel pressure vessel (just under a foot thick of steel) as well as the fuel’s casing. “Most nuclear reactors, such as the ones at Zaporizhzhia, have a number of strong protective barriers to prevent radioactive release. Professor Paul Norman, Professor of Nuclear Physics & Nuclear Energy, University of Birmingham, said: There have been a number of media reports on Russia’s claims that the occupied Zaporizhzhya nuclear power plant in Ukraine could spread dangerous radiation across eastern Europe. Journalists fight on their own frontline.Expert reaction to Russian claims that a Zaporizhzhia nuclear power plant accident could spread radiation across parts of Europe Russia’s Armed Forces also threatened to shut down the ZNPP if shooting continues.
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