On Tuesday, 17 July 1984, at the British Rail test track at Old Dalby, Leicestershire, a flask of the type used for transporting spent MAGNOX fuel from power stations across Britain to the reprocessing plant at Sellafield was deliberately rammed by a Diesel locomotive (46009) and three passenger coaches, at a speed of 160 km/h. The locomotive was utterly demolished. The coaches were wrecked. And the flask? It needed a new coat of paint.
The intent was to placate critics of nuclear energy, who professed not to be satisfied by operational experience and engineering studies showing that the transport of spent nuclear fuel was safe. As Dr Sir Walter Marshall (later Lord Marshall of Goring) said, “If you’re not convinced by this, you’re not going to be convinced by anything!”
Whether or not it accomplished this, it was a spectacular demonstration of the high safety standards of the civil nuclear energy industry — and made for some absolutely spectacular video.










