Radiation Level at Fukushima Is So High It Killed Two Robots
By Whitney Webb
While media attention has largely drifted away from the 2011 meltdown at the Fukushima Daiichi Nuclear Power Plant in the years since the disaster, a recent and disturbing development has once again made Fukushima difficult if not impossible to ignore.
On Feb. 2, Tokyo Electric Power Company or TEPCO, quietly released a statement regarding the discovery of a hole measuring 2 meters in diameter within the metal grating at the bottom of the containment vessel in the plant's No. 2 reactor.
Though news of this hole is indeed concerning, even more shocking was the associated jump in radiation detected in the area. According to estimates taken at the time of the hole's discovery, radiation inside the reactor was found to have reached 530 sieverts per hour, a massive increase compared to the 73 sieverts per hour recorded after the disaster. To put these figures in perspective, the National Aeronautics and Space Administration's maximum amount of radiation exposure permitted for astronauts over their entire lifetime is 1 sievert.
Human exposure to 5 sieverts would kill half of those exposed within a month, while 10 sieverts would prove fatal to nearly all exposed within a matter of weeks. An official with Japan's National Institute of Radiological Sciences told the Japan Times that medical professionals with the organization had never even considered working with such high levels of radiation.
A nearly 1-square-meter hole is seen in a walkway in the containment vessel of the No. 2 reactor at Fukushima No. 1 nuclear plant. It is thought that the heat of the melted nuclear fuel caused the walkway to give way.TEPCO
TEPCO initially tried to counter public fears by stating that most of the reactor's nuclear fuel remained in the containment vessel despite the hole. However, on Feb. 3, TEPCO spokesman Yuichi Okamura was quoted as saying that "it's highly possible that melted fuel leaked through." At the time, TEPCO said that it would send a robot into the area to survey the full extent of the damage in order to definitively determine whether fuel had leaked outside of the reactor into the surrounding environment.
The first robot, deployed on Feb. 16, was unable to conduct any meaningful measurements, as the extreme conditions within the reactor forced operators to abandon it within the containment vessel. The "scorpion" robot, manufactured by Toshiba, was meant to record images of the reactor's interior and collect accurate—instead of estimated—data on the levels of radiation within. Within three hours of deployment, the device stopped responding to operators despite its stated ability to withstand high levels of radiation. TEPCO has not commented on its new plans to gauge the damage recently uncovered in the reactor in the wake of the robot's malfunction.
When a second robot was sent to investigate, it also failed.
One of the World's Worst Nuclear Disasters Grows Even worse
Despite a lack of widespread media coverage and TEPCO's reassurances that things are under control, there is concern that the nuclear disaster at Fukushima—already one of the worst nuclear disasters in human history—is quickly growing even worse.
PBS News reported last year that more than 80 percent of of the radioactivity from the three damaged reactors was released into the Pacific Ocean, as 300 tons of radioactive water have leaked from the reactors every day since an earthquake and subsequent tsunami crippled the plant in 2011.
The Pacific Ocean may have diluted much of the radiation, due to its massive volume, yet radiation and debris from the disaster has been detected along the western coast of Canada and the U.S. Traces of Fukushima radiation were first detected in early 2015, when trace amounts of cesium-134 and cesium-137 appeared in samples collected near Vancouver Island. Then, in December of last year, researchers at the Woods Hole Oceanographic Institution detected seaborne cesium-134 along the Oregon coast.
Though no link between the presence of radiation has been officially established, fisheries along the entire western coast of North America have been collapsing. Last month, the U.S. secretary of commerce reported on the failure of nine salmon and crab fisheries in Alaska, California and Washington—all due to "unexpected" yet steep declines in fish populations.
While scientists and government authorities alike are "stumped" as to the cause, fish caught along the West Coast have showed high increases in the levels of cesium for years—as far back as 2014. Researchers have maintained that fish, however, are still "safe" to eat despite the fact that at least one group of doctors agrees that there is "no safe level of radionuclide exposure, whether from food, water or other sources, period."
The Japanese government, TEPCO and mainstream media continue to insist that this massive release of radiation into the environment has had no effect on human or environmental health. However, thyroid cancer rates have soared in Japan, with 131 children developing thyroid cancer in the six years since the disaster. That total is equivalent to about 600 thyroid cancer cases per million children, while the child thyroid cancer rate elsewhere is about one or two children per million per year.
Thyroid Cancer in Children Increases 30-Fold in Fukushima, New Study Says http://t.co/9g36dF6v52 @nukereaction @mark_lynas— EcoWatch (@EcoWatch)1445031637.0
Despite the marked increase in cancer rates, TEPCO and the Japanese government insist that Fukushima radiation is "unlikely" to result in a greater incidence of cancer cases. However, exposure to Iodine-131, the main radionuclide released into the air and water during the meltdown, is known to increase human risk of thyroid cancer and is the most clearly defined environmental factor associated with thyroid tumors, suggesting that a correlation between radiation and exposure likely exists.
This latest breach in one of the plant's damaged reactors as well as TEPCO's inability to even properly gauge the extent of the damage suggests that we have yet to see the full devastating potential of the Fukushima nuclear disaster.
Reposted with permission from our media associate MintPress News.
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Where Does the Deficiency Begin?<p>Nobody knows exactly how much vitamin D a person actually needs. The question of when a deficiency starts is correspondingly controversial. However, vitamin D is becoming increasingly popular.Not only is the pseudo-scientific literature on the "sun vitamin" experiencing an upswing, but the number of published studies has also increased enormously in recent years. For example, in 2019 <a href="https://academic.oup.com/edrv/article/40/4/1109/5126915" target="_blank">a study found that</a> Vitamin D is responsible for keeping the skeleton functional and is associated with cardiovascular diseases, type 2 diabetes and various types of cancer. <br></p>
An All-Rounder<p>Vitamin D levels in the body rise and fall according to sun exposure. If sufficient UV rays reach the skin, the body is able to produce the vitamin itself. However, the human body only derives an estimated 10 to 20 percent of its daily requirement from food.</p><p>The vitamin D that we synthesize from sunlight or food is not biologically active at first. Before the kidneys can produce the biologically active form of the vitamin, known as calcitriol, and release it into the blood, some metabolic processes must take place beforehand.</p><p>In addition, many organs have receptors to which the precursor of calcitriol binds. Further, this substance is also present in blood.</p><p>From this precursor, the organs then produce calcitriol themselves, which the body then uses for countless other processes in the body. This form of vitamin D thus regulates insulin secretion, inhibits tumor growth, and promotes the formation of red blood cells as well as the survival and activity of macrophages, which are important for the <a href="https://www.mdpi.com/2072-6643/5/7/2502/htm" target="_blank">immune system.</a></p>
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Association Versus Intervention Studies<p>Many studies on the vitamin are association or observational studies. "By definition, these studies cannot prove the causal relationship, but only point to mere correlations," said Fassnacht. The physician tries to illustrate this with an example:</p><p>"Imagine two groups of 80-year-olds. One group is spry, active and does sports. If you compare them with another group living in nursing homes, the difference in vitamin D levels will be dramatic. Life expectancy would also be extremely different."</p><p>But to try to explain the difference in fitness by vitamin D status alone is far too simplistic. "Vitamin D levels are a good measure of how sick someone is. But not more," says Fassnacht. </p><p>According to Fassnacht, none of the intervention studies carried out to date -- that specifically examined the effect of vitamin D on various diseases -- has been able to confirm the previous association and laboratory studies or the presumed positive effect of vitamin D.</p>
Further Research Is Needed<p>"If a coronavirus infection is suspected, it is therefore absolutely necessary to check the vitamin D status and quickly correct any possible deficit," said the recommendation of the paper published by the University of Hohenheim.</p><p>"Studies are underway to see whether vitamin D helps in COVID-19 infection, but I personally do not believe that this is really the case," says endocrinologist Fassnacht. Nevertheless, he says it is of course useful to carry out these studies.<br></p><p>"I don't want to rule out that there are actually subgroups of people who benefit from an additional vitamin D dose," he says. After all, this has been proven to be the case with a severe deficit.</p><p>In view of the study situation, Fassnacht does not think much of preventive, nationwide vitamin D substitutes. "My belief that the vitamin helps somewhere is very low. But, of course, I can be wrong."</p>
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