Fri, Nov 01, 2024 page5

• German nuclear waste site worries some

  KONRAD REPOSITORY: The project manager said a great deal of care is going into work at the subterranean site, but environmentalists say it should be abandoned

  • AFP, SALZGITTER, Germany
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  An elevator rattles down about 1km below ground in five minutes to reach Germany’s nuclear necropolis, a future repository set to entomb much of its radioactive waste.

  At the bottom, a jeep ride takes helmet-clad engineers and visitors through an underground tunnel complex into a cold, cavernous hall with concrete-lined walls that rise up about 15m.

  Atomic waste is to be encased in concrete at the subterranean Konrad repository “to prevent the radioactive substances from being released into the air,” project manager Ben Samwer said.

  

  A vehicle is silhouetted against an opening at the Konrad repository, a former iron-ore mine, near Salzgitter, Germany, on Oct. 21.

  Photo: AFP

  “The safety levels we want to achieve require a high degree of care,” Samwer told reporters during a visit to the multibillion-dollar project deep below the western city of Salzgitter.

  The former iron ore mine is to become the final resting place for waste from the atomic power plants that Europe’s top economy has shuttered over the past few years.

  Protests raged for decades in Germany over where to put its nuclear waste, leaving the Konrad site as the only approved location so far.

  

  A drill bit is pictured at the Konrad repository at a former iron-ore mine near Salzgitter, Germany, on Oct. 21.

  Photo: AFP

  Konrad is meant to start operating in the early 2030s with space for more than 300,000m3 of material with low and intermediate levels of contamination.

  However, more than a year since Germany’s last reactor was taken off the grid, under a nuclear phase-out decided following Japan’s 2011 Fukushima Dai-ichi disaster, the political issue is far from buried.

  Besides the technical challenge, developers have battled protests and legal resistance which saw activists, unions and local representatives lodge a new challenge last month.

  

  Ben Samwer, project manager at the Konrad repository, stands in a tunnel earmarked to hold nuclear waste at the former iron-ore mine near Salzgitter, Germany, on Oct. 21.

  Photo: AFP

  Environmental group Nabu said that the Konrad project was a “relic” that “does not meet the requirements for safe storage” and needs to be abandoned.

  Below ground, the engineers are pushing on, confident they can clear the technical and political hurdles.

  Germany has a “problem” with the leftovers from nuclear power projects, construction manager Christian Gosberg told reporters. “We cannot leave it for decades or centuries above ground where it is now.”

  However, building a storage facility has proved “significantly more complex” than he expected when he joined the project six years ago, Gosberg said.

  The expansion of the old mine comes with “special challenges,” he said, adding that much of the machinery used to excavate the tunnels has to be taken apart and reassembled underground.

  In some cases, every piece of rebar has to be placed by workers and “individually screwed together,” Gosberg said. “The whole process is extremely complicated and of course takes a lot of time.”

  Building delays have pushed the opening back and driven up the cost to about 5.5 billion euros (US$5.9 billion).

  Meanwhile, the search for more sites goes on — Germany will need to find another two underground locations to accommodate yet more nuclear waste. For highly radioactive material, the difficult search for a safe place might last another half a century, the German government has said.

  Mass protests around other earmarked locations through the 1980s and 1990s led to the abandonment of other sites, including at the nearby Asse mine and a facility by the town of Gorleben.

  For Germany’s anti-nuclear movement, the closure of the last atomic reactor was a “huge success,” said activist Ursula Schoenberger, for whom the campaign has lasted about 40 years.

  “At the same time, the problem of nuclear waste is still there and we have to deal with it,” Schoenberger said.
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