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Monday, August 1, 2011

Fukushima plant, originally the site of Hill of the tsunami, the safe

News photoGround zero: dozers (top) to take off in the 35-meter bluff site to prepare for the Fukushima No. 1 nuclear power plant, this image is taken from the documentary "reimei" ("Dawn") in the late 1960s to the beginning. Left: construction site leveling is seen. Right: see you on the construction site, excavated the area where the emergency diesel generators are installed. THE TOKYO ELECTRIC POWER CO.The first two PartsThe 11. March of the tsunami that hit the quarrels, Fukushima No. 1 nuclear power plant destroyed in backup of critical system and launched a meltdown of hundreds of fuel rods reactors 1, 2, and 3. Video of the damage and a building explosion tell reactor led to many people on a regular basis — nuclear energy and quake experts — ask: why did not have a safe place for all of the tsunami threats built coastal nuclear power plant?Katsumi Naganuma, 70, a former employee of Tokyo Electric Power Co., in particular, takes the guilt, because he knows that the 35-meter-high bluff was shaved down in the Pacific views to build the plants closer to the surface of the sea, more than 40 years ago.Tepco, on the assumption that the tsunami 3.1 metres should never hit the coast, to reduce the bluff about 25 meters and in renting cultured plant protection products on the ground, only 10 meters above sea level. "When I see the situation now, in my view, wrong to delete so much out of the Hill," said Tepco, Naganuma: local office is preparing for the construction of the n of the 1960s. "If they do not dig down to the ground so much, we could not have suffered from the situation. (Nuclear disaster) had not taken place, "he said.Naganuma, like thousands of other local residents to evacuate his home, are forced to close to a crippled as it continues to the plants to spew radioactive materials.In recent interviews, and the Japan times in the last examination of the documents show it was a decision for Tepco to cut off the bluff, so nuclear complex could be built on a low platform, while leaving it vulnerable to a massive tsunami, such as the one that struck March 11. Another 14 metres of Tepco dug in the basement floors, including turbine-buildings, below the surface to create the emergency diesel generators are installed.The tsunami flooded the compound easily and her power systems, including running a critical nuclear reactor coolant equipment. Meltdowns became inevitable.But Tepco does not blame only one. Such as the add-in, the nuclear regulatory authorities and in the 1960s, the texts of all the youths to seismologists in an earthquake and a massive tsunami hit ever in the plants, documents, and the data-show. "In the past 700 years of Fukushima suffered almost no earthquakes, with the exception of the Aizu region (when the current Fukushima Prefecture), a noteworthy injury "of the application form annexed to the report, in 1966, the Government requests the approval of the first reactor Tepco plant."This site can be described as an area of low seismicity, including relative to other regions of the country concerned, "the paper concluded with a threat of tsunami, hardly stressed.The paper was based on the previous investigation, the Government was approved, and seismologists, who gave the green light to build the reactor. Fukushima factory No 1, designed in the 1960s, the estimated maximum possible tsunami Tepco should only 3.1 m in 2002, however, the following recommendations ... the quake experts at the Japan Society of civil engineering works, Tepco change facilities, including final breakwater, so they could withstand 5.7 meters of the tsunami. This is also recognised by the regulatory authorities.Recent interview with the Japan times, Masatoshi Toyota, 88, former Deputy Executive Director, Tepco, said one add-in to calculate a bluff to build the reactors, the base was directly from the solid bedrock to mitigate the threat of an earthquake.Toyota was a central leader, who has been involved in the Fukushima No. 1 plant.It is actually common practice to build a nuclear power plant facilities directly, is one of the primary bedrock, por más author.Toyoda also cited two reasons for the bluff from the selection in the Tepco — the sea water pumps are used in the coolant water is needed to set up a course of up to 10 metres away from the sea and very heavy equipment, including 500 tons of pressure-reator was assumed that the boat can be brought together.In fact, decided to build the low ground to the Tepco of sea water, pumps operating costs to a cost-benefit calculations are based on plants, two research papers written by leading engineers to Tepco separately in the 1960s.If the sea water pumps was placed on high ground, to their operating costs would be higher accordingly. "Hiroshi Kaburaki, then Deputy head Tepco construction Office, Fukushima No. 1-we decided to build the plants, the plant at ground level when compared to the cost of the building to the ground and the operational costs, which has water pumps, "wrote Suiryoku, a technical journal, Hatsuden power plants of January 1969 version.Tepco still believed at ground level was "sufficiently high enough to secure the safety of the tsunami and Typhoon waves against the" Saeki Seiji wrote, Tepco's construction Office in his study of the book will be published in October 1967, Engineers at Tohoku Electric Power Co., on the other hand, the civil engineering section head was different when the threat of tsunami to turn the Onagawa nuclear power plant was built in the Miyagi Prefectural in the 1980 's.Fukushima, Tohoku built such as the coast and was in the tsunami as high as 13 metres of March 11. before the construction of the Tohoku Electric treatment of the historical records of plants reported to the tsunami region, executed in computer simulations, and is made to the local coast, could face the 9.1 metre tsumani.Tohoku Electric, had been placed under the construction of the ground 14.8 metres above sea-level is — that is unlikely to be spared the Onagawa plant, major accidental damage the meter-high tsunami which the 13 hit in March of., a Former employee of Tepco said many now Naganuma feel, Tepco's long-running propaganda of its nuclear facilities, despite the huge economic benefits, according to the safety of her home town of duped toi Okuma plants that hosts the Fukushima plant No. 1.Before the construction of the coastal area was barren, a little-populated highland dubbed "Fukushima, Tibetan." Most of the time out of the living of the inhabitants of the local agriculture and needed to go off of eked-city of seasonal migrant workers during the winter.But the establishment of permanent jobs, tax revenues and other money to projects in the local economy. "In my view, not because the happier was able to receive a monthly salary of the month, compensation, and to go away from home to work, I didn't, "said Naganuma, adding,", he had never expected (such accidents) would take place. "Naganuma said many local citizens now feel badly betrayed the nuclear plant. "But I think now more and more people in the (national) has been started, the feeling in this way, after 11. in March, "he said.News photo

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