| Hazardous |
Failure is hazardous, and occurs without warning. It suspends operation of the system |
10 |
| Serious |
Failure involves hazardous outcomes and/or noncompliance with government regulations or standards |
9 |
| Extreme |
Product is inoperable with loss of primary function. The system is inoperable |
8 |
| Major |
Product performance is severely affected but functions. The system may not operate |
7 |
| Significant |
Product performance is degraded. Comfort or convince functions may not operate |
6 |
| Moderate |
Moderate effect on product performance. The product requires repair |
5 |
| Low |
Small effect on product performance. The product does not require repair |
4 |
| Minor |
Minor effect on product or system performance |
3 |
| Very minor |
Very minor effect on product or system performance |
2 |
| None |
No effect |
1 |
