Transport flasks

Nuclear trains rumbling across UK is a fairly familiar sight these days, but the cream coloured transport 'cabins' hauled in the twighlight hours through towns, cities and countryside conceal the real nuclear cargo - the spent fuel flasks. Because the flasks are generally loaded into their transport cabins at the reactor site, there is seldom any chance to see the flasks themselves. The exception to this is the imported foreign fuel which, having been unloaded at Barrow docks, is transported by rail to Sellafield unprotected by any cabin...