2216: The BBC’s Matt Frei in Tokyo says spent fuel rods in reactors five and six are also now believed to be heating up.
Why would they be heating up? Don't they just sit there in the pool? What is changing?
I am stunned by the size of those spent fuel storage pools and how much is actually stored in each pool.
Dimensions of each pool:
55 m (W) x 73 m (L) x 35 m (H)
Storage capacity for each pool:
6840 assemblies (90 racks w/ 76 units each) measuring
12 m (W) x 29 m (L) x 11 m (H) holding approximately
200% of the amount of total core reactor loading
1 reactor core at Fukushima Daiichi is 3,356 fuel assemblies. The Fukushima Daiichi plant is currently storing a total of 15,558 fuel assemblies.