MOX (5% Pu)

(U,Pu)O₂

Fuels

Density: 10.97 g/cm³

Mixed oxide fuel with 5 at% Pu in heavy metal. Depleted U matrix (0.25% U-235) with reactor-grade Pu vector.

Composition

Nuclide / Element	Fraction
U-235	0.000792
U-238	0.315875
Pu-238	0.000333
Pu-239	0.009000
Pu-240	0.004000
Pu-241	0.002000
Pu-242	0.001333
O-16	0.666667

Code output

MCNP

c MOX fuel (5 at% Pu in HM, reactor-grade Pu)
c Depleted U (0.25% U-235), Pu vector: 2/54/24/12/8
c Density: 10.97 g/cm3 (use -10.97 on cell card)
m5    92235.80c  0.000792  $ U-235
      92238.80c  0.315875  $ U-238
      94238.80c  0.000333  $ Pu-238
      94239.80c  0.009000  $ Pu-239
      94240.80c  0.004000  $ Pu-240
      94241.80c  0.002000  $ Pu-241
      94242.80c  0.001333  $ Pu-242
       8016.80c  0.666667  $ O-16

Notes

Pu vector is representative of reactor-grade Pu (Pu-238/239/240/241/242 = 2/54/24/12/8 at%). Adjust Pu vector and U enrichment to match specific fuel specifications.

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