the international _ fukushima power station. we had from the international atomic _ fukushima power station. we had from the international atomic energy - the international atomic energy agency that the nuclear reactors have been shut down. when they are shut down, how simple is that to do, and does it mean it is then a completely safe environment? it does reduce the risk. _ completely safe environment? it does reduce the risk. what _ completely safe environment? it does reduce the risk. what happens - completely safe environment? it does reduce the risk. what happens there l reduce the risk. what happens there is you lower the temperature inside the reactor by shutting off the nuclear reaction. by doing that, it means if there were a loss of electricity, the fuel doesn't need active cooling any more with pumps that circulate water around the fuel, they can look after themselves, it is in a cool enough state for there not to be a meltdown hazard. that doesn't mean to say the risk is completely gone. 0ne hazard. that doesn't mean to say the risk is completely gone. one of the other things we are quite concerned about at the nuclear power site is the fact that used nuclear fuel that has been taken out of the reactor is on the site to cool. this material is not really well shielded when compared to the reactor itself so a fire or direct missile strike to the waste containing area the site could