Chernobyl's Steel Radiation Shield is the Biggest Moving Structure Ever

By Kelsey Campbell-Dollaghan on at

In the normal world, it's what you'd call a bad investment: spending a £1.2 billion to build the largest moveable structure ever—and knowing that it won't work for longer than 100 years. But in Chernobyl, it's the best available option for protecting a whole continent from the worst nuclear disaster in history.

Yesterday was the 28th anniversary of the disaster, which killed 31 and subjected hundreds of others to extreme suffering, and left 200 tonnes of radioactive corium and 16 tonnes of uranium and plutonium exposed inside the smoking remains of Reactor 4. At the time, heroic workers quickly constructed an ad hoc shelter over the reactor to stop the spew of radioactive material across Ukraine and Western Europe, using 7,000 metric tons of metal and many more tons of concrete. But that shelter—known as the Sarcophagus—was never meant to last. And now, it's in danger of collapsing.

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

The Sarcophagus. Image via CHNPP.

New Safe Confinement is a project that's nearly as old as the meltdown it's designed to contain. It's a two-pronged plan: first, thousands of workers are constructing a 100-metre-tall steel arch that weighs more than 32,000-tonnes. Though it's being built a few hundred metres away from Reactor 4, it's eventually going to cover it, creating a thick steel cage around the reactor in case it collapses. But because the area near it is too radioactive for workers to stay there for longer than a few minutes, this huge structure is being built next door—then, very very slowly, it will be slid on teflon-coated tracks to cover the reactor.

We last checked in with its progress almost six months ago, the 100-metre arch was well underway. But today, on the anniversary of the disaster that necessitated it, we spent some time on the NSC's official website to cull the most incredible photographs of its construction in the months since our last look. As impressive as it is, it probably won't compare to watching it slide into place. [CHNPP]

 

September 2013:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

 

December 2013:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

 

January 2014:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

 

February 2014:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

 

March 2014:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

 

April 2014:

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

Chernobyl's Steel Radiation Shield Is the Biggest Moving Structure Ever

All images via CHNPP.