It's not being totally demolished, they can't do that for obvious reasons as there are still some areas which are highly dangerous. For the last 25 years, Louis Theroux has been making documentaries about life in all its strangness, mystery, and angst. In the high contamination areas and in the low contamination areas, there doesn't seem to be a difference in the range of species that we see. In the surrounding area, they washed down surfaces to remove the radioactive dust. NARRATOR: In the main reactor hall lies the most deadly debris: the remains of the reactor's uranium fuel rods, radioactive dust and molten material from the core of the reactor. NICOLAS CAILLE: We have to provide tools to enable the deconstruction. NARRATOR: With the wire removed, there's one last task before the final push. NARRATOR: Ian's team must work 350 feet above the ground. So, instead of wheels, engineers will use a hundred-and-sixteen stainless steel feet, known as skid shoes. Major funding for NOVA is provided by the David H. Koch Fund for Science, the NOVA Science Trust, the Corporation for Public Broadcasting, and PBS viewers. Trying to make connections with people who are in different ways living on the, The Great Wall of China, it's been studied for decades but now new technology is revealing its secrets like never before. ROB OWEN: We kind of had to really go back and study the design. But then they will face a problem that bedevils the entire nuclear industry: Today, more than 30 years after the Chernobyl disaster, the 19-mile exclusion zone around the reactor is still a restricted area. Your email address will not be published. NARRATOR: The lifting team needs to work fast, to complete the arch on schedule. Working 300 feet above the ground, it's a precarious operation to wrestle the wires back into place. More than 200 pistons must work in perfect unison to slowly slide the arch towards the reactor. NARRATOR: There's another challenge that makes this already complex project even tougher, the lack of time. سال انتشار: ۲۰۱۶. Save my name, email, and website in this browser for the next time I comment. NARRATOR: As the wires leave each jack, they should coil around a carousel, but on one, the lifting wires are tangling. We have some junctions here, so, because of this gap, we have to do a compressed sealant, which makes the air seal tight. NARRATOR: British engineer, Ian Carling, is in charge of constructing the roof of the arch. NICOLAS CAILLE: This is a one-off skidding. We see quite a range of animals on most of the cameras that we bring back in: red deer, wolves, lynx, Eurasian lynx, and, also, European bison, as well. ROB OWEN (Crane System Manager): It is just fantastic, really, really an amazing structure. Now, an international team of engineers is racing the clock to assemble one of the most ambitious superstructures ever built—an extraordinary 40,000 ton, $1.5 billion dome to encase the crumbling remains of the Chernobyl nuclear reactor. NARRATOR: It takes four hours to winch the massive "cat door" open. The metallic structure cannot last 100 years. NARRATOR: The closer they get to the reactor, the more difficult the operation becomes. Hastily, a "sarcophagus" was built to contain the radioactive materials that lingered at the site after the explosion. This low-friction surface will help the stainless steel feet of the arch to slide. So, it's very, very dangerous. At last, this huge thing is built and it's going to move to where it should be. Home › Off Topic Three-hundred-sixty-nine stairs. And then, after, they will have to break the concrete. Before they slide it over the reactor, engineers must transform it into a machine designed to deal with Chernobyl's radioactive debris. Inside the ceiling of the arch, they will attach two giant robotic cranes. Advertisement They knew they needed something lighter and less rigid. It provides that stiffness that allows you to do pushing, pulling. To erect 36,000 of tons, it's quite challenging. To push the arch, engineers will fit each leg with hydraulic pistons. ... ALE's youtube channel, if you're really bored, a company from over here doing rather well everywhere, to paraphrase Hanson's old advert. BJORN-EVERT VAN ECK RASMUSSEN (Engineer): That's going to be very tight, that's for sure. It's crumbling. MIKE WOOD: When we put the cameras out, we take a G.P.S. Two-thousand tons of force pushes against the arch. Engineers must now battle to prevent another escape of deadly radiation all whilst fighting freezing weather and lethal radiation. IAN CARLING: Some of the materials that we're using, they can act like&hellipa; kite, if you like. WHEN: Thursday, 9 February, 17:15 - 20:30 WHERE: One Exchange Square, London EC2A 2JN Admission: Admission is free but registration is required. NARRATOR: Moving this massive structure will be no simple task. It would shake the heavy tube, generating extreme forces that could damage the arch. None of this must escape, but the sarcophagus enclosing this material, is falling apart. NARRATOR: It takes three lifts to raise the arch to its full height of 350 feet. NEWS REPORT, VOICE MAN #1: Soviet authorities have been trying to downplay the incident, claiming that there are only two dead and only 150 sent to hospital. NARRATOR: The World Health Organization estimates that more than 2,000 liquidators have died, or will die, as a result of the radiation they received. Although Chernobyl isn't in a seismic area, it is only 400 miles from the Vrancea zone in Romania, one of the most active seismic areas in Europe. NARRATOR: But the siding here, known as cladding, has another important job. So we are sending somebody with a saw to remove these rebar, to be sure we are not damaging the arch. NIKOLAI STEINBERG: So, when we completed the sarcophagus we made the decision that the real lifetime of the sarcophagus should be no more than 30 years. The New Safe Confinement, the structure… NARRATOR: Once the shelter has been moved into position over the old reactor, this crane, yet to be fitted with its robotic arm, will start dismantling the ruins of the Chernobyl reactor. مدت زمان: حجم: ۵۱۰ مگابایت / ۱٫۲۳ گیگابایت / ۲٫۵۲ گیگابایت Gtech. It has one drawback: a strong side force could move the platform up and slacken some of the wires. With funding tight, he wants to have the shelter in place as soon as possible, so he needs to know firsthand the condition of the sarcophagus. NICOLAS CAILLE (Novarka): It's the biggest moveable structure in the world. We start, so we have to try to reach the target of finishing the jacking today. Unfortunately, we will not be able to renew it once the arch will be in the final position, because the radiation conditions at that location are too severe for a painter. VOICE MAN #1 IN CONTROL ROOM: We have the confirmation that we are ready. Battling arctic winter weather—and lethal radiation—this is the inside story of the epic race to build Chernobyl’s MegaTomb. About 300 yards away from the reactor, where radiation levels are low enough for builders to work safely, they will construct two halves of a giant steel arch, 30 stories high. We remember the place as clean, beautiful and bright. In this National Geographic special we see archaeologist Allan Maca, an exper, Black Wednesday occurred on 16 September 1992, it was a day that saw the British government faced one of the biggest financial crisis in history, it was a day when the Bank of England lost billi, In 1985 Los Angeles would be terrorized by a series of brutal sexual assaults and murders. So, we can still finish today. Chernobyl's new sarcophagus took two decades to make. Please note that all guests must bring a form of identification and may be subject to a random bag search. A 60-minute version of the film, produced by Windfall Films (part of Argonon) for BBC Four in association with NOVA/WGBH, PBS Distribution, and France Television, NHK and … After Chernobyl exploded, it spewed radioactive dust onto the surrounding countryside. Documentary which follows the construction of a trailblazing 36,000-tonne steel structure to entomb the ruins of the nuclear power plant destroyed in the 1986 Chernobyl disaster. And as it gets exposed, the level of radiation will get much, much higher than it is today. Documentary which follows the construction of a trailblazing 36,000-tonne steel structure to entomb the ruins of the nuclear power plant destroyed in the 1986 Chernobyl disaster. Twice a day. In 1986, when the Chernobyl reactor exploded, it exposed workers and firefighters to high levels of gamma radiation. NARRATOR: But just as the arch approaches the reactor, they run into trouble. NARRATOR: No one has attempted to dismantle an exploded nuclear reactor before. Despite the weather, the engineers must press on. The initial plan was to install two bridge cranes on the ceiling of the new arch. If the sarcophagus collapses before the arch is in place, the fallout would contaminate the arch and the whole worksite. NARRATOR: Over 40 countries, including the United States, have contributed a total of $1.5-billion to build the new shelter and finally close a chapter on a disaster that occurred on April 26th, 1986. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Most will pass straight through a human body, but some will interact, damaging cells and fragmenting D.N.A., which can cause cancer. Now, they are building a facility here for storing radioactive fuel and waste from the reactors at Chernobyl and from other plants in Ukraine. Inside Chernobyl's Mega Tomb. I have the French national dosimeter; I have a Ukrainian national dosimeter; and then we also have an electronic dosimeter that is our operational dosimeter. Like many others, he received a large dose of radiation. Thirty workers died, 50,000 people fled the nearest city and radioactive fallout turned an area larger than Lancashire in the United Kingdom into a no go zone. Thirty workers died, 50,000 people fled the nearest city, and radioactive fallout made an area larger than Long Island a no-go zone. Most Satisfying. NARRATOR: At the center of the hot zone, they cleared the radioactive debris from the roof of the exploded reactor. It has taken 18 years of planning, seven years of construction, and a unique international collaboration of 10,000 men and women from 30 countries, but three decades after the world's worst nuclear accident, Chernobyl is finally sealed away, for generations to come. Two miles from the reactor lies the abandoned city of Pripyat. NICOLAS CAILLE: We have decided to build 300 meters away, because we can work as much as we want: 10 hours a day, eight hours a day, the full week, the full year.