"Hundreds of problems have been found at European nuclear plants that would cost 25bn euros (£20bn) to fix, says a leaked draft report."
"The report, commissioned after Japan's Fukushima nuclear disaster, aimed to see how Europe's nuclear power stations would cope during extreme emergencies.
The final report is to be published on Thursday. The draft says nearly all the EU's 143 nuclear plants need improving.
Anti-nuclear groups say the report's warnings do not go far enough."