e.g a huge earthquake or a tsunami as in Japan's case, or maybe an attack ... faith in the human operators To enumerate some regretably normal human fac

e.g a huge earthquake or a tsunami as in Japan's case, or maybe an attack ... faith in the human operators To enumerate some regretably normal human factors: 1. deliberate procedural over-complication in the name of job security (political hazard) 2. disgruntled operator sabotage (political, but maybe that qualifies as an attack?) 3. operator error 4. operator laziness 5. operator incompetance 6. operator experimentation (experimentation was the cause of Chernobyl, after all)