At least 12 tons of radioactive water leaked from the nuclear plant in Fukushima, hit by the earthquake and tsunami of March last year, and a part of this – according to a statement by the Tokyo Electric Power Co-Tepco, the owner of ‘ system – has probably spilled into the ocean.
The loss discovered this morning according to the reconstruction provided by the Japanese newspaper ‘Mainichi Daily News’ was located in a pipeline and a desalination plant after the closure of the valves leak stopped within half an hour.According to experts of Tepco water leaking radioactivity would have more than 100,000 becquerels per cubic centimeter, where Japanese law sets a limit of 0.04 becquerels per cubic centimeter.What today is not the first incident of this kind. Last month there was a similar incident, during which leaked 120 tons of radioactive water, 80 of which are based on the reconstruction provided by TEPCO are over the ocean.
The Japanese Government has decided to December the state of cold stop for the central Fukushima, which means that the temperature inside the reactor is maintained at below 100 degrees Celsius. However, this is only the first step towards stabilization of systems: according to TEPCO will take at least ten years before poOrmai is a curse: Fukushima Passion lives another day. And being around Easter can not be more apt. This was announced by Tepco itself, but even if the incident happened at the same nuclear power plant, the nature of the problems is very different. This time to worry is a pipe that connects the desalination plant which is cooled with the control unit to the storage tank.
On the day of Thursday, April 5 this pipe is removed. The immediate result was the release at 12 tonnes of radioactive water. Here, the problem with nuclear plants is just that. Accidents happen anywhere and in all industries at some point. The difference between a nuclear power plant and any other type of plant is that if there is a failure of a normal plant, the damage may be mild and limited; happens when a nuclear plant spilled radioactive material which may destroy everything that is and that it takes centuries to smaltito.ter withdraw nuclear fuel and another thirty to dismantle the structures.
The samples (white dots) effettauta and the warm Kuroshio in green, yellow and red (WHOI)
MILAN – high concentration of radionuclides, but less than the maximum permitted levels for human health. It is the result published in early April in the journal PNAS an international campaign of careful sampling conducted last June in the Pacific Ocean off the coast of Japan to measure the rate and the dispersion of radioactivity into the sea following the accident at the nuclear Fukushima after the tsunami of 11 March 2011.
SAMPLING – Sampling of water and marine organisms was carried out at 600 kilometers off the center closer to 30 km from Fukushima – the edge of the exclusion imposed by the government in Tokyo – a group of 17 researchers from eight international institutions. The data collected show a high concentration of radioactive elements, which vary widely from point to point due to the currents. The warm Kuroshio Current, which corresponds to that of the Gulf into the Atlantic, has prevented the expansion of the radioactive elements to the south.
LEVELS – Even if the levels are far below those limits, the researchers put the scientific community – and beyond – a question: the accumulation of radioactive material in the sediments on the seabed, in the long term which may put at risk ‘ marine ecosystem? The main radionuclides in the Pacific championships were two isotopes of cesium (134 and 137) that do not originate in natural waters. And in any case, the Fukushima incident has caused the largest accidental release of radioactivity into the ocean of history. The highest rate of contamination – a thousand times better than average, but amounted to only 15% of the annual dose due to natural radioactivity – has not been found in Fukushima, but further south in Ibaraki, due to a vortex that is detached from the current Kuroshio.
NEW RELEASE OF CONTAMINATED WATER – Tepco Meanwhile, the company that manages power plants in Fukushima, Thursday, April 5 announced that the breakage of a pipeline connecting a desalination plant to a storage tank. Leaked 12 tons of water contaminated with radioactive material and part is over the ocean. Similar losses have occurred numerous times last year, but the authorities have always said that no risk to health. In December, the Japanese government had declared that the plant had achieved stability and losses of radioactive liquid were significantly reduced. But last month there was another spill of 120 tons of water and 80 liters (0.07%) were over the sea.