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at japan’s fukushima nuclear complex, robots aiding the cleanup after 2011 disaster

by:IMASS     2019-09-24
It took ten years to build a robot arm, and Japan deployed it to the International Space Station in 2010.
But his next challenge makes it look easy.
At 2011, a 61-year-
Retired old engineer at Tokyo Hitachibased mega-
The company began designing a robot to help retire the Fukushima Daiichi nuclear power plant, the worst nuclear crisis since the Chernobyl disaster in Ukraine in 1986.
In space, \"you have the sun, the moon, the Earth, the temperature.
These are very specific, very specific.
They\'re not going to change, \"said Hirohito. “But nuclear [reactors]are man-made.
What happened inside the reactor after the disaster was completely unknown.
The operating environment and space are very different.
This is much more difficult.
\"Newsletter: Get the headlines of the day from The Times Editor Davan Maharaj> AD, as the earthquake, tsunami and nuclear leak destroyed the east coast of Japan, the country has killed more than 15,000 people and displaced more than 230,000, and has begun implementing one of the most extensive recovery plans in history.
Robots play a vital role in Japan\'s efforts to inspect, purify and eventually retire damaged nuclear reactors
This is a necessary step to restore public trust and submit the incident to history.
Experts say there are more than 100 robots in use in Fukushima, including extensive modifications to some basic designs.
They are compared to scorpions, snakes, giraffes and amphibians.
They fly, walk, crawl and maneuver underwater, risking dust, debris and radiation doses that could kill humans.
Their diversity highlights the size
And complexityof their task.
\"Personnel exposure [to radiation]
No robots will be higher, and
The site\'s emissions will be much higher, \"said Lake Barrett, an American nuclear energy expert, who consulted senior Japanese officials on the retirement program.
Advertising 1/7 a house is located in a scarred landscape in a restricted area near the destroyed Fukushima Daiichi nuclear power plant in Nami, Japan.
The area was shut down for residents due to radiation pollution caused by the Fukushima nuclear disaster.
(
Christopher Long/Getty Images)
2/7 workers searching for radiation
The city of Minamisoma is contaminated with garbage.
March 11 marks the fifth anniversary of Level 9.
The earthquake and tsunami that killed 15,894 people and the subsequent damage to the reactor at the Fukushima nuclear power plant.
(
Christopher Long/Getty Images)
There were 3/7 personal belongings scattered in the tsunami.
The damaged family horse.
The nuclear disaster forced 99,750 people to evacuate.
(
Christopher Long/Getty Images)
4/7 bags of radiation-
Contaminated soil and debris in the town of Naraha are awaiting treatment.
(
Christopher Long/Getty Images)
The residential and commercial property of 5/7 Nanzhen is taken over by nature and elements.
(
Christopher Long/Getty Images)
6/7 there is a cemetery in the tsunami
The scarred scenery of the Nano.
(
Christopher Long/Getty Images)
A House of 7/7 nm.
(
Christopher Long/Getty Images)
There are two types of robots, he said: \"diagnostic robots\" and \"working robots,\" which inspect the interior of buildings and reactors, \"clean up debris and remove physical labor such as fuel rods. “They have [robots]
Dry ice was fired to absorb radiation, he said.
\"Some people shoot very high.
Pressure water . . . . . . Some people have hard alloy teeth that fall off the surface of the most polluted concrete and then suck away the debris with a vacuum cleaner.
\"Retirement plans are funded by the Japanese government and supervised by the Tokyo International Institute for Nuclear retirement
It is headquartered in the coordinating body.
The robots are made by companies such as Toshiba, Hitachi, Mitsubishi, BMW and the United States. S. -
Based in iRobot, best-
Known for developing a Roomba automatic vacuum cleaner. Much as the U. S.
Barrett said that the products developed by the space program will be used in daily life, and most of the technologies developed to investigate these plants can be \"spun off into a normal society \"--
Micro-cameras, micro-drones, virtual reality technology, can transmit data through thick concrete walls.
However, several engineers said that, despite the difficulty of their work, the widespread anger over the disaster cast a shadow on their public image.
\"One of the most interesting things is the synergy between engineering technology and social, political and psychological constraints, which the public does not really understand,\" Barrett said . \".
\"Engineers can do great things with robots, etc. —and they do —
But how do we talk to people about this when we ask?
How do we explain what the risk is?
This is a big challenge.
Operator of factory
Tokyo Electric Power Company.
Also known as Tokyo Electric Power
The factory has been declared stable.
Thousands of employees are still working there, pumping water to destroyed reactors, letting them cool down and storing contaminated water in huge tanks.
However, the advertising area of the \"restricted area\" around the reactor is still abandoned and is rotting, and their weeds and roads and railways are roaming by a group of wild boars.
Many former Fukushima residents, even those outside the region, still refuse to return to their homes;
They accused Tepco of ignoring safety standards when designing factories and failing to control the damage caused by melting.
People they think disastermade.
The retirement roadmap for Tepco will take 40 years and cost $15 billion.
\"The aerospace industry has always been positive --
\"It\'s always brilliant,\" said Long Teng, an engineer at Hitachi . \".
\"But on the nuclear front, we start at the bottom. . . .
Those who are working in purification are really hard.
However, it is frustrating that their public image is very bad.
People just don\'t want to hear it takes 50 years.
There are six reactors in Fukushima, half of them. Units 1-3 —
Melted into disaster.
Hitachi is developing inspection robots for Unit 1 and Toshiba robots for Unit 2
Both companies are spreading extremely dangerous nuclear fuel.
In April, Hitachi deployed two taxiing \"snake robots\" to explore the worst-hit reactor Unit 1.
One is stuck and failed;
No melted fuel debris was found.
TOKYO Toshiba chief research scientist Fujii taixiong-
S. -based multinationals say his team has been working on a 10-inch-
Scorpion dragon robot with camera, sensor and joint
Investigate the pressure vessels around the reactor core of Unit 2 like the tail.
Toshiba plans to deploy scorpion robots in early August
Along a 22-foot-
Originally intended to deliver the fuel rods to the long passage of the reactor core.
However, the task was hampered by rows of cement panels blocking the path of the robot.
Although the workers managed to remove the blocks mechanically in October, they soon found another problem.
Toshiba wants the robot to enter the vessel through a \"penetrating pipe\", but the radiation level near the vessel is too high to be installed safely. (
Tepco is currently purifying the area and hopes to deploy the robot this year. )
Engineers say the data collected by robots will eventually help them design a second robot to remove the molten fuel, a task that has never been tried.
Toshiba has also developed an \"amphibious robot\" to remove fuel rods from the rubble of Unit 3 at Fukushima.
The robots are actually two huge, remote ones.
The control rig is more than two floors higher than the school bus and more than two floors wider.
They were developed with the help of Toshiba USA. S. -
The West House-based subsidiary will ship to Fukushima by boat and put it on the top of the unit\'s roof, which was destroyed by a hydrogen explosion on 2011.
These rigs are equipped with hanging robotic arms that can remove debris from buildings and then remove the fuel rods from the pool at the bottom of the reactor (
Therefore, amphibious designation)
Put them in the radiation. proof cask.
Toshiba developer Sekiguchi Koichi said 60 to 70 people were working on the project.
\"We were trained here from last February to December,\" he said in an interview at Toshiba factory in Tokyo.
He pointed to two bulky rigs and a pit between them, deep and packed with scaffolding.
\"There is water in it, and there is a simulated fuel rod inside.
We were trained in getting fuel and removing debris.
Koichi said they have been training for every accident.
But before they correct, they are ready to fail again and again.
\"Of course there is a lot of pressure,\" he said . \"
\"We are building a robot that enters our completely unknown environment.
We have done a risk assessment, but what happened was unexpected.
So how do we deal with it?
\"Computers freeze from time to time --
So are the robots, \"he added.
\"There is no guarantee of 100% for anything.
Iran\'s latest missile test also failed to violate the nuclear deal. S.
Despite the environmental problems, the festival in India continues. S.
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