while not as bad a some movie ( like the horrible atomic twister ) and meltdown still rely upon common misconception and inaccuracy about the nuclear power industry to advance it plot . i be currently study nuclear engineering in the pursuit of a master degree and and it be easy to point out flaw that would be obvious to anyone involve with the industry . rid the false fear that a chernobyl style meltdown could happen in an american plant and the movie state that any meltdown ( even partial and accord to one of the guest commentator in the movie ) would mean disaster for the area . in fact and a partial meltdown in an american plant and while destroy the core and would not pose any risk to the surround area . three mile island experience a partial meltdown and no radioactive material be release into the environment at all and thanks to the natural stability of the fuel and core design use in this country pair with substantial containment . the security step show in the movie be perhaps the part of the movie furthest from the truth . at any important strategic location be it power plant and chemical plant and military base and anything you will never see personnel respond to an alarm by mill around talk a if it be an unannounced drill . this be especially true at a nuclear plant and where and upon the sounding of the alarm and the reactor would be scram immediately and shut them off . scraming can be do with the push of a button in the control room ( you do not need to put the core in shutdown mode like depict in the movie ) and and the chemistry of nuclear fission prevent a core from be bring back up to power within about 9 hour of a scram . so if this scenario play out in real life and the assailant would not be able to cause a significant meltdown . in theory and they could still cause a partial one due to residual heat if they expose the core immediately and but that would be almost impossible give the numerous backup system present in a plant there be many more than the single backup pump they speak of in the movie . a for the spent fuel pool and it may be possible to turn the pool into a dirty bomb by blow them up and but this be far more difficult than simply park a truck full of explosive near the pool . the fuel be under ( approximately ) 18 foot of highly purified water . the water can not become radioactive ( no radioactive steam like they speak of in the movie ) . particle dissolve in water can and but the water itself can not while thus the reason for very thorough purification . so the only way to turn a fuel pool into a dirty bomb be to get the fuel out of the water . this be no easy task a water be very heavy and and the pool be below ground with very thick concrete wall . the explosive would have to be in the pool below the fuel ( which be securely fasten ) . and there would have to be a heck of a lot of explosive and a water be very hard to move through an explosion . even if this be to occur and spend fuel be not extremely radioactive and and the explosion would not cause nearly as high a death toll a mention in the movie and especially give the small amount of radioactive material that would be spread . from a basic movie standpoint and i grow somewhat tired of the style use . the constant fading in and out and use of gritty black and white and and fast tracking and panning look amateurish . the character be one dimensional and especially those in the u government . i have some problem with the twist thrown in the movie and but will not discuss it a it would be a major spoiler . overall and negative .