Spent Fuel At Sizewell B

This is my calculation of the amount of spent fuel at Sizewell B. It is not that accurate (estimate 20% either side) but should give us a rough idea

Electrical Output	1258	MW_e	Wikipedia gives 62MW used internally. However, this figure gives 67MW since BE state power rating at 1191
Thermal Efficency	36.5%
Thermal Power	3444	MW_th	Wikipedia value
	3.44	GW_th
Total maximum energy per year	1257	GWdays
Load Factor	87%		Average over lifetime (wolfram alpha) ï¿½ does not include 2010
Total energy actually produced	1093.64	GWday
Electrical Output	9587.47	GWhours	Just a check ï¿½ this is 9.6TWhours which is reasonable if you include the internal electrical consumption (less than 1% out)
Burnup	33	GWday/TU	The characteristics of LWR fuel at high burnup and their relevance to AGR spent fuel NNL (10) 10930 Issue 2
Spent Uranium	33.14	T	Amount of Uranium used every year
U238 Atomic Mass	238
UO2 molecular mass	270
Spent Fuel	37.6	T UO2	Amount of UO₂ used every year

So the amount of spent fuel is 30 – 45 tonnes per year. Greenpeace estimated 220T in 2002. This calculation would give 225T for 2002.

By 2011 this would give 564T.

By the end of 2035 it would give 1466 tonnes.

Casks

Assuming that they use VSC-24 casks

This gives a figure of about 117 casks

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