Burnup Calculator
Fuel depletion analysis and isotopic evolution tracking
Average Burnup
45.2
MWd/kgHM
+2.3 from last cycle
Peak Burnup
67.8
MWd/kgHM
Assembly B-15
Cycle Length
18
months
EFPD: 450
Discharge Burnup
100
MWd/kgHM target
67% achieved
Core Burnup Distribution
0-25 MWd/kg
25-50 MWd/kg
50-75 MWd/kg
75-100 MWd/kg
Assembly Details
Click an assembly to view details
B-15
High Burnup
Current Burnup
67.8 MWd/kg
Enrichment
19.5%
Cycles
3
Power Factor
1.28
k-inf
1.089
Remaining Residence Time
Isotopic Evolution
Current Isotopic Composition
U-235
12.4%
U-238
82.1%
Pu-239
3.8%
Pu-240
1.2%
Pu-241
0.4%
FP + MA
0.1%
Fuel Cycle Timeline
Cycle 5 / 8
Cycle 1
2022
BOC → EOC
Burnup: 15.2
✓
Cycle 2
2023
BOC → EOC
Burnup: 28.7
✓
Cycle 3
2023-24
BOC → EOC
Burnup: 38.4
✓
Cycle 4
2024
BOC → EOC
Burnup: 45.2
✓
Cycle 5
Current
In Progress
Burnup: 52.1
●
Cycle 6
Planned
Q3 2025
Est: 65.0
○
Refueling Plan
Discharge (EOC-5)
12 assemblies
C-1
C-2
B-6
B-5
+8 more
Fresh Fuel (BOC-6)
12 assemblies
19.75% UOX
Batch F-1
Shuffle Pattern
Out-In
Fresh assemblies loaded in outer ring, burned assemblies shuffled inward
Economic Analysis
Fuel Cost
$2,450/kgHM
Fabrication
$1,200/kgHM
Total Fuel Cost
$3,650/kgHM
Levelized Cost
$5.2/MWh
Annual Fuel Expense
$12.4M