NUCLEAR FUEL CYCLE: Nuclear Source Characterization T. Downar Nuclear Engineering Purdue University March, 2005 THE NUCLEAR FUEL CYCLE
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1000E3KW x 8760hr x 0.90 x 0.05 = 394E6dollars
0.5E6 dollars/fuel assembly x 64 assemblies = 32E6dollars
Containment (Hardened Structure)
Fuel Building(Soft Structure)
Capture Neutron σk
Capture Neutron σj->k
kFission Product build up in a Nuclear Reactor
29.9sFission Product Decay Chains
150 days after discharge
Are the nuclide inventories sufficiently different between these two types of reactors to enable distinguishing whether proliferated nuclear source came a PWR or a BWR?
PWR (1/8) Assembly BWR Assembly
* [Tsoukalas, 1997] Tsoukalas, Uhrig “Fuzzy and Neural Approaches in Engineering,” Wiley, 1997.
PWRNuclear Source Characterization/ Identification with ANNs
Neural Networks Pattern Recognition
Eu154/Cs137A Typical Run of the Neural Network
Ratios as Inputs
Trained Neural Net
Neural Net Output