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Use the following references below to solve a , b , c and d using the image to guide the problem. For a reference LWR:
Use the following references below to solve abc and d using the image to guide the problem.
For a reference LWR: assume a thermal efficiency is power MWe, uranium is $lb UO SWU is $kgSWU conversion is $kgU fabrication costs are $kgU losses in conversion losses in fabrication tails assay of wt reference core contains tonne fuel with enrichment of An average economical grade of uranium ore is Each fuel assembly contains kg of fuel. The reactor operates on a batch equilibrium cycle of months which includes months at power including day startup and day for shutdown.
Data for recycling and disposal: Price of reprocessing $kg used fuel Price of MOX fabrication $kg Price of DU $kg used fuel is kg used fuelkg fresh fuel, used fuel has g fissile Pukg used fuel, fissile Pu has a reactivity equivalency of g Uequivalentg fPu loss in reprocessing; losses in fabrication same as UO fuel; Table shows information on reactor grade plutonium; dry casks can hold spent fuel assemblies and costs $M to purchase and load. Financialeconomic data: annual interest rate is interest is compounded monthly
Evaluate an equivalent MOX fuel for LWR fabricated from natural uranium and reactor grade plutonium from PWR with a burnup of MWDMTU:
a Calculate the total plutonium and fissile Pu loading of a MOX fuel that is equivalent to the UO fuel referenced in the given data above report as kg Pu per kg fuel and kg fissilePu per kg fuel respectively
b What would be the cost per kg of this MOX fuel?
c Considering the time value of money, calculate the cost of the MOX fuel $kg and the cost of a reload for the reactor at the point it is loaded into the reactor onethird MOX, twothirds UO Assume reprocessing costs are paid months in advance and fabrication costs paid months in advance.
d Assuming approximately t used fuel in the US with the specifications given above, how long could you fuel the current reactors in the US Assume each has the same power as the reference LWR and computed capacity factor. Ignore the restrictions on the amount of MOX fuel that can be utilized in a reactor at any given time. The problem is asking for an evaluation of fuel energy value in comparison to demand.
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