And now let us pray that Feyenoord wins against Manchester <| sep |> Longest national anthem ever . <| sep |> That ' s not quite right . The AVR was a test reactor that used a wide range of experimental fuels . Most of the failed fuel was due to a small fraction of these , while the format settled on for future reactors performs very well . Additionally , the vast majority of dust production occurs due to transport of the fuel pebbles outside the reactor under gas pressure through pipes wear can be greatly reduced simply by reducing the speed of pebble transfer and modifying the fueling pattern . Other pebble failures not the same as fuel failures occurred in THTR due to incore control rods the newer designs do not have any of these . Calling AVR a ' nuclear disaster ' is a huge exaggeration it ' s to be expected from German commentators but it ' s not at all helpful .