| Severity | RISK MATRIX 5 × 5 | |||||
| Terrible (5) | considerable (4) | Sensible (3) | Slight (2) | Negligible (1) | ||
| 25 | 20 | 15 | 10 | 5 | Frequent (5) | Likelihood |
| 20 | 16 | 12 | 8 | 4 | Most probable (4) | |
| 15 | 12 | 9 | 6 | 3 | Probable (3) | |
| 10 | 8 | 6 | 4 | 2 | Improbable (2) | |
| 5 | 4 | 3 | 2 | 1 | Infrequent (1) | |