![]() Because even when it's shut down totally, there's still 200 megawatts of heat being generated just by the radioactivity alone, and nobody knows how to shut off radioactivity," he explained to CTV News Channel Saturday evening. "You cannot shut a nuclear reactor completely off. Gordon Edwards, with the Canadian Coalition for Nuclear Responsibility, says a meltdown is always possible when a nuclear reactor loses its cooling system. 'Nobody knows how to shut off radioactivity' ![]() "Given that we are now talking about a potential meltdown, given that we've had an explosion at this reactor, given that there are real indications that there is a problem with containment, I think the IAEA is really downplaying this incident and it's far more serious than they are saying," he told CTV National News Saturday night. The pills can help protect against thyroid cancer, since they inhibit the thyroid's absorption of radioactive iodine from the atmosphere.ĭamon Moglen, the Climate and Energy Project director at Friends of the Earth - a group that opposes the use of nuclear power - worries that the IAEA is not being fully transparent about the scope of the threat. Japanese authorities say they are making preparations to distribute iodine pills to residents in the area of both plants. "Full evacuation measures have not been completed." "Evacuations around both affected nuclear plants have begun," the atomic watchdog said in a statement. The IAEA reports that three reactors at that plant are experiencing increased pressure. As well, another 30,000 have also been evacuated near the Fukushima Daini (or Second) plant, 11 kilometres to the south, which has also lost its cooling functions. Nearly 170,000 people within a 20-kilometre radius around Dai-ichi have been evacuated, the International Atomic Energy Agency reports. Until now, Japanese officials had been downplaying the danger at Fukushima, even while they spent Saturday increasing the size of the evacuation zone around the facility. Three other reactors at the facility are in a safe, shut-down state. ![]() Meanwhile, the cooling system at a third reactor within Fukushima Dai-ichi has also failed – raising the possibility that reactor could begin to overheat too. The blast destroyed the building housing the reactor, but not the actual steel envelope encasing the reactor. If it reaches 4,000 degrees, the uranium fuel pellets inside the reactor's fuel rods will start to dissolve, the beginning of a meltdown.Ī complete meltdown would release uranium and other toxic nuclear byproducts into the environment.Īs work continues too cool down Unit 3, authorities are also trying to stop a meltdown that began a day earlier in another reactor that was the site of an explosion on Saturday. Officials haven't said how high the temperature has risen inside the troubled reactor. "Because it's inside the reactor, we cannot directly check it, but we are taking measures on the assumption of the possible partial meltdown," he said. As the cooling systems fail at three reactors within the same nuclear power complex, a top Japanese official is saying that one of those reactors could be in the midst of a partial meltdown.Ĭhief Cabinet Secretary Yukio Edano told reporters Sunday that operators at the Fukushima Dai-ichi nuclear plant have been trying to reduce pressure and heat inside Unit 3, but a partial meltdown in the unit is "highly possible."
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