As the nuclear crisis worsens, we must pray for fair winds and no rain By Geoffrey Lean World Last updated: March 17th, 2011 (Telegraph) After days of seesawing between hope and fear, between a triumphant vindication of nuclear safety and a disastrous loss of confidence in the atom, events at the stricken Fukushima nuclear reactors seem to have taken an alarming turn for the worse, as the Foreign Office advises Britons to consider leaving Tokyo and north-eastern Japan. Yukiya Amano, the Japanese head of the International Atomic Energy Agency, has abandoned his largely reassuring stance to say the situation is “very seriousâ€. Gregory Jaczko, the Chairman of the US Nuclear Regulatory Commission, which has been assisting the Japanese authorities, said that radiation levels are “extremely highâ€. And the EU’s energy commissioner, Guenther Oettinger, said: “We are somewhere between a disaster and a major disaster.†He added: “There is talk of an apocalypse and I think the word is particularly well chosen.†The danger has arisen not from the three reactors themselves that have been the focus of almost of the attention of the last five days, but from the pool used to store highly radioactive spent fuel at a fourth. Unlike the reactor cores, which are inside thick containment, the pool – which is on upper floor of the reactor building – has no special shielding: all that lies between the radioactivity and the environment is the water in which it is supposed to be submerged. And Mr Jaczko has told the US Congress that that has all gone. “We believe,†he said, “that there is no water in the spent fuel pondâ€. Furthermore, he added, the radiation was so intense that it “could possibly impact the ability to take corrective measuresâ€. Already plans to drop water on it from helicopters had to be abandoned because they would have involved pilots flying into the radioactive plume and it may be that no-one can get near them. If that is so, there may be no way of salvaging the situation, and that the last defence will be the element. So far, thank goodness the wind has been blowing the plume out to sea in fine weather. If it were to turn inland the fears of a catastrophe could materialize, especially if rain were to bring the airborne radioactive materials down to earth. The people living around Chernobyl were lucky: the accident happened on a still night and the heat of the fire carried the radioactivity high into the air, as if in an invisible chimney, where it encountered a gentle breeze tat wafted it over relatively uninhabited marshes. Providentially it did not rain for days. We can only desperately hope for similarly meteorological good fortune in Japan.