Author Topic: Calculation of Fukushima energy release  (Read 1925 times)

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worcesteradam

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Calculation of Fukushima energy release
« on: March 16, 2011, 03:40:24 am »
Based on this worrying report
The Fukushima Daiichi plant has seven pools dedicated to spent fuel rods. These are located at the top of six reactor buildings – or were until explosions and fires ravaged the plant. On the ground level there is a common pool in a separate building that was critical damaged by the tsunami. Each reactor building pool holds 3,450 fuel rod assemblies and the common pool holds 6,291 fuel rod assemblies. Each assembly holds sixty-three fuel rods. In short, the Fukushima Daiichi plant contains over 600,000 spent fuel rods – a massive amount of radiation that will soon be released into the atmosphere.

these are my calculations, (probably wrong given i am not a physicist)

fuel rods 38 of them weigh 185 kg

600,000 rods / 38 = 15789

15789 * 185 = 2921053 kg of fuel

estimate 1.5% plutonium 238

2921053 * 0.015 = 43816 kg of plutonium 238 potentially released !

Energy density P238 = 2,200,000 MJ/KG

43816 * 2200000  =  96,395,200,000 MJ of energy

1 BTU = 1kJ   ~   1000 BTU = 1 MJ

96395200000*1000 = 96395200000000 BTU   =   9.63952 * 10^13

9.63952 * 10^13 BTUs energy released !

plutonium 238 halflife 90 years

So 50% will be released (over Japan?) in the next 100 years

total world energy use in a year 4*10^17 BTUs

Worst case, about 1/10000 of the annual energy use of the world has been released into the atmosphere, will manifest itself over 100 year period.

Offline Valerius

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Re: Calculation of Fukushima energy release
« Reply #1 on: March 16, 2011, 03:52:01 am »
U.S. Navy Detects Radiation 200 Miles From Japan Nuclear Plant

http://www.foxnews.com/world/2011/03/15/navy-detects-radiation-200-miles-japan-nuclear-plant/
"No man can put a chain about the ankle of his fellow man without at last finding the other end fastened about his own neck."  -Frederick Douglass

Offline larsonstdoc

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Re: Calculation of Fukushima energy release
« Reply #2 on: March 16, 2011, 08:14:45 am »


  Nice calculations worcesteradam.  Reminds me of physics back in college.  A friend of mine is getting us more KI tablets to protect our thyroids just in case.
I'M A DEPLORABLE KNUCKLEHEAD THAT SUPPORTS PRESIDENT TRUMP.  MAY GOD BLESS HIM AND KEEP HIM SAFE.