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Green

Inside Sweden's "100,000-Year" Solution To Bury Nuclear Waste

As experts debate whether nuclear power can become another leading renewable energy source, Sweden has adopted a first-of-its-kind underground depository for nuclear waste — and many countries are following their lead.

Inside Sweden's "100,000-Year" Solution To Bury Nuclear Waste

At Sweden's Oskarshamn nuclear power plant

Carl-Johan Karlsson

As last fall’s climate summit in Glasgow made it clear that the world is still on route for major planetary disaster, it also brought the question of nuclear power squarely back on the agenda. A growing number of experts and policymakers now argue that nuclear energy deserves many of the same considerations as wind, solar and other leading renewables.

But while staunch opponents to nuclear may be slowly shifting their opinion, and countries like France, the UK and especially China plan to expand their nuclear portfolios, one main question keeps haunting policymakers: how do we store the radioactive waste?

In Sweden, the government claims to have found a solution.


Climate Minister Annika Strandhäll announced the approval this week of a plan to bury 12,000 tons of nuclear waste 500 meters underground, Dagens Nyheterreports.

A final depository

The method, proposed by the Swedish Nuclear Fuel and Waste Management Company (SKB), relies on the stability of the granitic bed-rock and two engineered barriers: a copper-cast iron canister enclosed by highly compacted bentonite clay.

Critics argue that sufficient testing is lacking

"The government supports the assessment by the Swedish Radiation Protection Authority, expert authorities and researchers that the method is safe for storing the waste," Strandhäll said.

While there are over 400 nuclear power plants in operation across 38 countries, Sweden is first in the world to approve the use of a so-called "final depository."

The nuclear power plant of Ringhals on a foggy day

Vattenfall

Will the capsules hold up?

Still, controversy remains over whether the storage technique will hold up under pressure. Nuclear waste must be stored safely for at least 100,000 years to allow the radiation to go down to the same levels of natural uranium ore. In an interview with Dagens Nyheter, Jessica Palmqvist, head of the research and development at SKB, claimed that the copper capsules will essentially last forever.

But critics argue that sufficient testing is lacking. For example, the capsules haven’t yet been exposed to live radiation while in the storage environment. "No one knows exactly how long the copper capsules will last," said Christofer Leygraf, professor emeritus in corrosion theory at the Royal Institute of Technology. "But it is more about them lasting 100 years than 100,000 years."

Of course, estimating the resilience of any material meant to last for 4,000 generations involves a lot of variables. For example, the final repository needs to withstand earthquakes, climate change and the weight of the 3.5-km thick ice which could cover the area during the next ice age in 50,000 years or so. That is also the reason why many other countries, such as Spain, have made the decision to rely on intermediary storage space while more testing is carried out.

Nuclear power is increasingly emerging as part of the answer

But Sweden was hard-pressed to reach a decision. The Scandinavian country announced last year that it's running out of intermediary space to store the waste produced by its six reactors that supply roughly one third of the nation’s power — risking a national power crisis should plants need to be halted as the storage site reaches full capacity by 2024.

In August, the government announced an expansion of the intermediate storage — where radioactive waste is put in water basins 30 meters into the bedrock — from 8,000 to 11,000 tons. But as constructing the permanent depository will take ten years, and the actual waste disposal another 50-60 years, the final sealing of the repository won’t take place until the turn of the next century. Should the decision drag out, the temporary storage risks filling up before it can be moved to the new facility.

Finland and China follow suit

Despite the controversy, more countries are likely to follow Sweden’s lead. In Finland, a final depository for nuclear waste is already under construction using the same techniques as in Sweden. Although a decision is yet to be made regarding the actual disposal, the facility will be ready in 2024. In China, where another 22 reactors will soon be added to the country’s existing 32, construction started last year of an underground laboratory in the Gobi Desert to decide whether it would be a suitable location for a nuclear waste dump. In Canada, a four-year drilling program to assess the geographical conditions for a depository in northwestern Ontario was wrapped up last month and is now entering a water-testing phase.

Meanwhile, the European Union has drawn up a landmark proposal to classify some nuclear power as green investments. If approved, it could set off a landslide of nuclear energy projects on the continent.

In the U.S., the White House's Bipartisan Infrastructure Deal signed in November last year allocated $6 billion to prevent premature retirement of existing zero-carbon nuclear plants. More broadly, an Associated Press survey of the energy policies across all U.S. states found that about two thirds say nuclear — in one form or another — will help take the place of fossil fuels.

Indeed, as the world has so far failed in significantly bending the global emission curve, and the energy sector remains the largest emitter of greenhouse gasses, nuclear power is increasingly emerging as part of the answer. As such, we can only hope that today’s climate decisions don’t end up harming future generations once again.

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The Weight Of Trump's Indictment Will Test The Strength Of American Democracy

The U.S. legal system cannot simply run its course in a vacuum. Presidential politics, and democracy itself, are at stake in the coming weeks and months.

The Weight Of Trump's Indictment Will Test The Strength Of American Democracy

File photo of former U.S. President Donald Trump in Clyde, Ohio, in 2020.

Emma Shortis*

-Analysis-

Events often seem inevitable in hindsight. The indictment of former U.S. President Donald Trump on criminal charges has been a possibility since the start of his presidency – arguably, since close to the beginning of his career in New York real estate.

But until now, the potential consequences of such a cataclysmic development in American politics have been purely theoretical.

Today, after much build-up in the media, The New York Times reported that a Manhattan grand jury has voted to indict Trump and the Manhattan district attorney will now likely attempt to negotiate Trump’s surrender.

The indictment stems from a criminal investigation by the district attorney’s office into “hush money” payments made to the adult film star Stormy Daniels (through Trump’s attorney Michael Cohen), and whether they contravened electoral laws.

Trump also faces a swathe of other criminal investigations and civil suits, some of which may also result in state or federal charges. As he pursues another run for the presidency, Trump could simultaneously be dealing with multiple criminal cases and all the court appearances and frenzied media attention that will come with that.

These investigations and possible charges won’t prevent Trump from running or even serving as president again (though, as with everything in the U.S. legal system, it’s complicated).

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