| Current fuel safety criteria |
| Safety related criteria |
Category* |
New elements affecting criteria |
| CPR/DNBR |
A, B, C |
1, 2, 5, 6, 7, 9 |
| Reactivity coefficient |
B, C |
2, 5, 6, 7, 8, 9 |
| Shutdown margin |
A, B, C |
1, 2, 5, 6, 7, 8, 11 |
| Enrichment |
A, B, C |
1, 2, 5 |
| Crud deposition |
A |
1, 2, 3, 4, 5, 7, 10 |
| Strain level |
A, B |
1, 3, 4, 7, 8 |
| Oxidation |
A, B, C |
3, 4, 7, 8, 10 |
| Hydride concentration |
A, B, C |
3, 4, 7, 8, 10 |
| Internal gas pressure |
A, B, C |
1, 5, 6, 7, 8 |
| Thermal-mechanical loads |
A, B |
1, 3, 4, 7 |
| PCI |
A, B, C |
1, 2, 3, 4, 6, 7, 8, 11 |
| Fuel fragmentation (RIA) |
C |
7, 8 |
| Fuel failure (RIA) |
C |
1, 3, 4, 7, 8 |
| Cladding embrittlement/PCT |
|
|
| (non-LOCA runaway oxidation) |
C |
3, 4, 7, 8 |
| Cladding embrittlement/oxidation |
C |
3, 4, 7, 8 |
| Blowdown/seismic loads |
C |
3, 7 |
| Assembly holddown force |
A, B, C |
1, 11 |
| Coolant activity |
A, B, C |
5, 6, 7, 8 |
| Gap activity |
C |
5, 6, 7, 8 |
| Source term |
C |
5, 6, 7, 8 |
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| 1 New fuel designs; 2 New core designs; 3 New cladding materials; 4 New manufacturing procedures; 5 Long fuel cycle; 6 Uprated power; 7 High burnup; 8 MOX; 9 Mixed core; 10 Water chemistry changes; 11 Current/new operating practices. |
| * A: normal operation; B: anticipated transients; C: postulated accidents
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