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Detailed text transcripts for TV channel - FOXNEWS - 20110318:15:17:00

Hazards, two main types of hazards we have to be concerned about, or they have to be concerned about, the heroic workers. one is exposed nuclear fuel, either the fuel in the reactor course or the spent fuel pools. when they become exposed you can start to have blistering and break down of the fuel and even a meltdown of that fuel, see that can release radiation. that s one effect. the second effect you re referring to, once the material starts to meltdown and then it resolidifies, the ooh rain yan and plutonium in that spent fuel, when it s recongealed it can get concentrated. when you put water back in the water can in effect reignite and cause a criticality accident. jenna: it s so incredibly complicatcomplicated. just as an expert what would you say we ve learned so far. ....

Reactor Course , Fuel Pools , It Resolidifies , Blame It On Aging , Ooh Rain Yan , Jenna Lee , Criticality Accident ,

Detailed text transcripts for TV channel - MSNBC - 20110316:17:08:00

They have now said they re worried about the overheating of spent fuel at both reactor three and four. and it s very dangerous if the spent fuel is exposed. they ve said some of it has been exposed already. and what you risk by exposing the spent fuel is more major releases of radiation. it s not meant to be outside of water. and it does not it can decompose. in fact, it can burn. and so you have to be very vigorous in trying to stop the heating of the spent fuel. the japanese officials, i guess yesterday their time, raised thç issue of there s a low probability event, but who would have thought it s even possible, what s called a criticality accident in a spent fuel pond, where the chain reaction, kind of the nuclear reaction, could start again. and so they re also rushing to try to put in neutron absorbers that can stop that from happening. and so they re trying to get ....

WithÃ , Chain Reaction , Criticality Accident , Neutron Absorbers , Spent Fuel Pond ,

Detailed text transcripts for TV channel - CNN - 20110314:01:21:00

Criticality accident and you get something that explodes, and then the question is whether the containment vessel holds all that or whether it cracks and throws that radiation up into the sky. we are not there yet. that s very important to underline. jim, let me just jump in here. just explain a couple of terms you re using. a containment vessel and fuel rods. the fuel rods, that s the actual nuclear material? exactly. those are the that s the nuclear material that they stick in to the plant that is the fuel for the plant. and by and then the containment vessel is something that they did not have at chernobyl but that they do have here, which and the sole purpose of the containment vessel is, if there is a problem, if there is a meltdown, a full meltdown, the purpose of that containment vessel is to keep that contained inside the plant so it does not escape into the environment. that s what happened at three-mile island. ....

Jim Walsh , Containment Vessel , Criticality Accident , Fuel Rods , Fo Fukushima Plant ,

Detailed text transcripts for TV channel - CNN - 20110314:10:19:00

Isn t the best word to use to describe what s happening there at these facilities? christine, great question. and you re absolutely right. radiation, radioactive, they all engender fear to begin with. and people understandably get nervous. what we really have right now is melting. this is a continuum. you get a criticality accident. and the thing explodes. that s what happened. they did not have a containment vessel. these power plants do have containment vessels. now, that s the last line of defense. you don t want to run that experiment to see if they work or not, but at least there s something in place that would provide safety if the worst of the worst happened. we re not at that point. some of the fuel rods have started to melt. that s why we see cesium and ....

Isn T , Great Question , Creaeases Amaze , Criticality Accident , Power Plants , Containment Vessel , Containment Vessels , Fuel Rods ,