While this construction did a good job at the time, its structure quickly deteriorated from high radiation and by the sarcophagus was too damaged to repair. Out of competitors, 19 entries were further examined, but there was no winner.
A French submission came 2 nd and proposals from the UK and Germany won a joint 3 rd place. Following this, the TACIS programme, a pan-European study, re-examined the proposals and selected the British sliding arch as the best solution.
In , the design and construction contracts were given to Novarka consortium, led by the French construction companies Bouygues and Vinci. The consortium worked with local and foreign sub-contractors: the arch was made with elements designed and built by Italian company Cimolai, the cranes were manufactured in the US by PaR, the arch cladding contractor was Turkish company Okayanus, and the lifting and sliding operations were conducted by Dutch company Mammoet.
September — New Safe Confinement work begins Work on a new protective system, now called the New Safe Confinement, started in to prevent contamination escaping the damaged sarcophagus and allow the remains of the reactor to be dismantled safely. The construction was moved into position in November , before its installation was finally completed in July Easily visible from kilometres away, the New Safe Confinement arch weighs 30, tonnes and is expected to prevent radiation release for the next years.
According to DBRD, the construction has a sophisticated ventilation system to eliminate the risk of corrosion, and it is strong enough to withstand a tornado. The installation of this solar plant marked the first time the area has produced power since , when reactors No. Hundreds of firefighters, supported by aircraft, battled the fires for approximately ten days. Background levels of radiation around Chernobyl overall were also lower than the global average before the accident, which may have helped to mitigate the radiation boost from the accident, Mettler added.
Nevertheless, ongoing radiation-safety concerns dictate that tourists are restricted to certain areas and are not permitted to wander on their own, tour leaders with Chernobyl Tour wrote on the Ukrainian company's website. An average one-day visit to Chernobyl begins and ends with passage through an official checkpoint for dosimetry control, or radiation measurement, and there is an additional radiation checkpoint midway through the tour, according to the State Agency of Ukraine on Exclusion Zone Management.
Visitors may not touch any structures or plants or remove anything from the zone, and they are prohibited from sitting or placing any camera equipment on the ground, Chernobyl Tour representatives said. An estimated 60, tourists visited Chernobyl in , Anton Taranenko, the chief of the Tourism and Promotion Department of the Kiev City State Administration, recently said at a news briefing; of all the most popular tourist destinations in Ukraine, "Chernobyl zone is the leader," said Taranenko, according to the National News Agency of Ukraine.
Mindy Weisberger is a Live Science senior writer covering a general beat that includes climate change, paleontology, weird animal behavior, and space. Mindy holds an M. Her videos about dinosaurs, astrophysics, biodiversity and evolution appear in museums and science centers worldwide, earning awards such as the CINE Golden Eagle and the Communicator Award of Excellence.
Live Science. Furthermore, the radius far exceeded Hiroshima as well, covering an area that exposed more people than either nuclear bombs. The most common question about Chernobyl is this: More than three decades later, is the area safe to visit?
The answer is a little more complicated than a simple "yes. On average, the response to when Chernobyl and, by extension, Pripyat, will be habitable again is about 20, years. That sounds like an extraordinary number until it's broken down scientifically: the radioactivity that penetrated the ground - and everywhere within a 1,mile radius - operates differently than other types of nuclear radiation. Whereas Hiroshima was designed to detonate on impact and release all the contained energy in one shot, shortly dispersing afterward, Chernobyl fell under the unfortunate instance of ground absorption.
The rain was responsible for pushing even more radiation down into the ground, making it nearly impossible to avoid it without evacuating immediately. With that being said, the most dangerous place to be in Chernobyl is anywhere near the reactor - that area will take at least 20, years to disperse as far as radiation breakdown. Many will ask, "then how is it safe for tours to happen at Pripyat? Touring the area does not come without risks, though.
In order for tours to be possible, certain areas have been designated as 'safe' with reasonable levels of radiation that are comparable to that of a long plane flight. Therefore, tourists must still with their tour guide or specialist and only endanger their own lives by veering from the tour group.
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