Sellafield, Europe's most dangerous nuclear site (located in the UK), is facing leaks from a huge radioactive waste silo that could endanger the public, the Guardian reveals.
There are safety concerns over a collapsing building, as well as cracks that exist in a tank of toxic sludge known as B30. All this has caused diplomatic tensions with countries such as the US, Norway and Ireland, which fear that Sellafield does not understand the seriousness of the problems.
Leakage of radioactive material from one of the UK's "highest nuclear risks" a decaying building in Cumbria - also known as the Magnox Swarf storage Silo (MSSS) - is likely to continue until 2050.
This could have "potentially significant consequences" if accelerated, with the risk of groundwater contamination, according to the official document.
Cracks have also appeared in the concrete and asphalt covering the vast lake containing decades of nuclear sludge, part of a long list of safety problems at the site.
These concerns are reported in Nuclear Leaks, a year-long Guardian investigation into radioactive contamination and the toxic workplace culture at the massive nuclear dump.
"We are proud of our safety record at Sellafield and are always striving to improve," a Sellafield spokesman said.