La situación de la central nuclear de Fukushima es peor de lo que se creía
Una inspección en el reactor número 2 detecta dosis muy altas de radiación y un nivel del agua de refrigeración inferior al estimado
東京電力福島第一核発電所の原発爆発事故の原子炉の状態は、思ったより悪い、危険
The situation of the Fukushima nuclear power is worse than thought
An inspection of the reactor No. 2 detects very high doses of radiation and a cooling water level lower than estimated
Jose Reinoso Beijing 28 MAR 2012 - 16:01 CET
An inspection of the reactor No. 2 detects very high doses of radiation and a cooling water level lower than estimated
Jose Reinoso Beijing 28 MAR 2012 - 16:01 CET
Doubts about the real state of the Fukushima Nuclear Power Plant 1 have resurfaced today, after a TEPCO spokesman, the company that owns the plant, has declared that the situation in one of three reactors that were worse than mergers than previously thought. The state of the other two could be even more serious.
more informationSPECIAL: Fukushima, a year afterFukushima radiation controlJapan silent for tsunami victims
The inspection industry today with an endoscope into the reactor number 2-the only one so far been able to approach the technical-level radiation has been detected within the camera up to 10 times the lethal dose. Experts had previously secured more than half the fuel melted the heart had broken, had fallen to the floor of the primary containment vessel, and part of it had spread along the ground or had splashed against the wall.
The particles of molten material probably have risen to dangerous levels of radioactivity of 70 sieverts per hour inside the container, has assured Junichi Matsumoto, TEPCO spokesman, reports the Associated Press. The figure is much higher than the highest levels found so far -10 sievert per hour, which were reported last year about an exhaust duct shared by Units 1 and 2.
Research has also found that the cooling water level in the containment vessel is only 60 inches from the bottom, much less than 10 meters were estimated when the government declared that the plant was in stable condition in December past. Technicians continue pumping water into the reactor.
Experts have used a device equipped with a mini camera, a thermometer, a dosimeter and a water level meter to check the damage inside the reactor number 2 for the second time since the earthquake and tsunami that devastated the northeastern coast of Japan and severely damaged the plant in Fukushima on 11 March last year.
Matsumoto explained that the data show that the situation is so serious plant to be developed special equipment and technology that can withstand high levels of radioactivity during the decommissioning of the plant, expected to take several decades. As stated above, under current conditions, an endoscope as used last 14 hours.
The cooling water level is found below the estimate, using data that has now seen that were not reliable, as recognized spokesman. But Matsumoto has insisted that the results do not change the state of "cold shutdown", declared in December, because the water temperature is 50 degrees Celsius, which shows that the molten fuel has cooled.
Three of the six reactors at Fukushima 1 were mergers, but the number 2 is the only one who has been examined because the radiation inside the building is relatively low and its containment vessel is designed with a slot that allows to insert the endoscope. The reactor chamber 2 can not be accessed by workers due to high levels of radioactivity, although some parts of the building are accessible for a few minutes at a time if inspectors wear full protection.
The exact condition of the other two reactors, which suffered explosions of hydrogen-damaged buildings is uncertain. The simulations indicate that more fuel has broken the core in reactor No. 1 in the other two, but the highest level of radioactivity is in the 3.
On Monday, Tepco disconnected, to carry out maintenance work for several months, the last nuclear reactor was operating a total of 17. Japan has been well underway with only one set of 54 scattered around the country. The latter is expected to be off, also for maintenance in May.
Facilities that are undergoing inspection must receive the approval of local authorities and central government before returning to be implemented. But many communities are reluctant to give permission after the disaster of Fukushima, forcing tens of thousands evict people from their homes and left large areas of land unusable for cultivation.
more informationSPECIAL: Fukushima, a year afterFukushima radiation controlJapan silent for tsunami victims
The inspection industry today with an endoscope into the reactor number 2-the only one so far been able to approach the technical-level radiation has been detected within the camera up to 10 times the lethal dose. Experts had previously secured more than half the fuel melted the heart had broken, had fallen to the floor of the primary containment vessel, and part of it had spread along the ground or had splashed against the wall.
The particles of molten material probably have risen to dangerous levels of radioactivity of 70 sieverts per hour inside the container, has assured Junichi Matsumoto, TEPCO spokesman, reports the Associated Press. The figure is much higher than the highest levels found so far -10 sievert per hour, which were reported last year about an exhaust duct shared by Units 1 and 2.
Research has also found that the cooling water level in the containment vessel is only 60 inches from the bottom, much less than 10 meters were estimated when the government declared that the plant was in stable condition in December past. Technicians continue pumping water into the reactor.
Experts have used a device equipped with a mini camera, a thermometer, a dosimeter and a water level meter to check the damage inside the reactor number 2 for the second time since the earthquake and tsunami that devastated the northeastern coast of Japan and severely damaged the plant in Fukushima on 11 March last year.
Matsumoto explained that the data show that the situation is so serious plant to be developed special equipment and technology that can withstand high levels of radioactivity during the decommissioning of the plant, expected to take several decades. As stated above, under current conditions, an endoscope as used last 14 hours.
The cooling water level is found below the estimate, using data that has now seen that were not reliable, as recognized spokesman. But Matsumoto has insisted that the results do not change the state of "cold shutdown", declared in December, because the water temperature is 50 degrees Celsius, which shows that the molten fuel has cooled.
Three of the six reactors at Fukushima 1 were mergers, but the number 2 is the only one who has been examined because the radiation inside the building is relatively low and its containment vessel is designed with a slot that allows to insert the endoscope. The reactor chamber 2 can not be accessed by workers due to high levels of radioactivity, although some parts of the building are accessible for a few minutes at a time if inspectors wear full protection.
The exact condition of the other two reactors, which suffered explosions of hydrogen-damaged buildings is uncertain. The simulations indicate that more fuel has broken the core in reactor No. 1 in the other two, but the highest level of radioactivity is in the 3.
On Monday, Tepco disconnected, to carry out maintenance work for several months, the last nuclear reactor was operating a total of 17. Japan has been well underway with only one set of 54 scattered around the country. The latter is expected to be off, also for maintenance in May.
Facilities that are undergoing inspection must receive the approval of local authorities and central government before returning to be implemented. But many communities are reluctant to give permission after the disaster of Fukushima, forcing tens of thousands evict people from their homes and left large areas of land unusable for cultivation.
東京電力福島第一核発電所の原発爆発事故の原子炉の状態は、思ったより悪い、危険
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