ROFL the reactor scare is a SCAM

http://finance.yahoo...r...set=&ccode=

In another troubling development, the International Atomic Energy Agency in Vienna said temperatures in units 4, 5 and 6 have been rising. The temperature in Unit 4 on Monday and Tuesday was given as 183 degrees Fahrenheit (84 Celsius). For Wednesday, the IAEA report for Unit 4 stated, "no data."

Also alarming was the information at units 5 and 6, which were in cold shutdown when the earthquake hit and had not been known to be of any concern. Also, the fuel rods in use when those two reactors were shut for maintenance remain inside their reactor vessels.

In Unit 5, the pool temperature was 139 degrees Fahrenheit (59.7 Celsium) on Monday, 141 degrees Fahrenheit (60.4 Celsius) on Tuesday and 145 degrees Fahrenheit (62.7 Celsius) on Wednesday.

Temperatures at Unit 6 also rose Tuesday and Wednesday. The latest temperature was 140 degrees Fahrenheit (60 Celsius).

Do these idiots even know how low that temperature is? It's not even boiling water! Why is that troubling? The fuel cladding won't even melt til its like 1500 celsius!

http://finance.yahoo...r...set=&ccode=

In another troubling development, the International Atomic Energy Agency in Vienna said temperatures in units 4, 5 and 6 have been rising. The temperature in Unit 4 on Monday and Tuesday was given as 183 degrees Fahrenheit (84 Celsius). For Wednesday, the IAEA report for Unit 4 stated, "no data."

Also alarming was the information at units 5 and 6, which were in cold shutdown when the earthquake hit and had not been known to be of any concern. Also, the fuel rods in use when those two reactors were shut for maintenance remain inside their reactor vessels.

In Unit 5, the pool temperature was 139 degrees Fahrenheit (59.7 Celsium) on Monday, 141 degrees Fahrenheit (60.4 Celsius) on Tuesday and 145 degrees Fahrenheit (62.7 Celsius) on Wednesday.

Temperatures at Unit 6 also rose Tuesday and Wednesday. The latest temperature was 140 degrees Fahrenheit (60 Celsius).

Do these idiots even know how low that temperature is? It's not even boiling water! Why is that troubling? The fuel cladding won't even melt til its like 1500 celsius!

D,

I have done engineering as well but not nuclear physics...maybe they are short as well.

I have done engineering as well but not nuclear physics...maybe they are short as well.

Yup when it hits resistance, short for lower lows with internal divergence.

Obviously they are off a decimal. You rely on Yahoo for accurate info. ?

Those reactors have working cooling systems. The question is whether the temperature rise is in spite of cooling efforts. are the cooling systems starting to break down and can they be repaired?

Those reactors have working cooling systems. The question is whether the temperature rise is in spite of cooling efforts. are the cooling systems starting to break down and can they be repaired?

There are many cooling systems. The primary cooling system was SHUT DOWN and can't operate because lack of power to the plant. I know, ironic.. no power at an electric power plant.. anyways, backup systems were not working for several reasons..

There was a diesel powered emergency cooling system, but that got flooded.

There was a battery powered emergency cooling system, but that ran out of juice.

Then they brought in other generators to power pumps and someone forgot to refill the gas tank!

Comedy of errors..

You are the nuclear guy, but is it possible that the temperatures are low because they are watering it and the whole steam is just escaping out without building up inside (to blow up again)? The pictures are all showing a column of steam coming out of the buildings and the buildings do not really look like "enclosing" anything anymore.

You are the nuclear guy, but is it possible that the temperatures are low because they are watering it and the whole steam is just escaping out without building up inside (to blow up again)? The pictures are all showing a column of steam coming out of the buildings and the buildings do not really look like "enclosing" anything anymore.

In general, a boiling water reactor doesn't operate very 'hot' because well, you're boiling water. Unlike a pressurized water reactor that can get pretty hot because pressurized water can be super heated.

In a boiling water reactor, the pressure is about atmosphere.. I think some designs use a secondary heater to heat the steam or so.. been a while since I went through all these designs.

Anyways, the concern is if the fuel rods melt. As I recall, the centerline fuel rod temperature melt is > 1500 C. BUT try to melt a piece of metal rod while its sitting in a tub of water. Even if the rod wasn't fully under water, you will get convection and conduction to the water to cool it.

Since the reactor hasn't lost it's water, and they are constantly pouring it in, risk of a melt down seems pretty low.. but I don't have all the details. They seem to think there was a partial melt down based on by products released.

They may also be trying to cool just the reactor vessel itself by pouring water on that. But the temperatures they're citing seem very low... the explosions were caused by hydrogen when they vented the steam from inside the reactor to the outside. I forgot the mechanism but hydrogen can be generated by chemical reaction between cladding and water at high temperature. It wasn't a steam explosion.

And about the decimal point error.. I can't see spent fuel rods generating 1000C..

http://www.atomic-el...ranion_data.htm

http://en.wikipedia.org/wiki/Uranium

Edited by vitaminm, 16 March 2011 - 10:01 PM.

DC, thanks for taking time to educate us...