|
| Effect | Severity of effect | Ranking |
|
| Hazardous | The operation of system may not be safe and/or not in compliance with government regulations (f.x. IEC or UL standard) | 9 |
| Very high | The primary functionalities are lost | 8 |
| High | The system is only operable at reduced performance | 7 |
| Moderate | The overall system performance is affected but the system is functional | 6 |
| Low | Minor parts of the system operating at reduced performance | 5 |
| Very low | The fault is noticed but does not affect the overall system performance | 4 |
| Minor | The fault is often noticed but does not affect the overall system performance | 3 |
| Very minor | The fault is only noticed in rare cases | 2 |
| None | No noticeable effect | 1 |
|