UO2 (3% enriched)

UO₂

Fuels

Density: 10.97 g/cm³

Uranium dioxide at 3 wt% U-235 enrichment. Standard fuel for commercial PWRs and BWRs.

Composition

Nuclide / Element	Fraction
U-235	0.010000
U-238	0.323333
O-16	0.666667

Code output

MCNP

c UO2 (3 wt% U-235 enriched)
c Density: 10.97 g/cm3 (use -10.97 on cell card)
m1    92235.80c  0.010000  $ U-235
      92238.80c  0.323333  $ U-238
       8016.80c  0.666667  $ O-16

Notes

Theoretical density is 10.97 g/cm³; operating pellets are typically 94–96% TD (~10.31–10.53 g/cm³). Adjust density for porosity as needed.

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