A sample of a Severity ranking scale is shown here:
|1||The effect of the failure is of such a minor nature as to be undetectable by the customer. For example, the part may be out of
specification on a non-key quality characteristic but not have any noticeable effect on the system.
|2-3||The failure’s effect is of a minor nature, although it is detectable by the customer, it causes only slight annoyance without any noticeable
degradation in the system performance.
|4-6||The failure’s effect causes some customer dissatisfaction and some system degradation.|
|7-9||The failure’s effect causes major customer dissatisfaction and major system degradation. serious safety/legal implications.|
|10||Sudden, catastrophic failure without any prior warning. very serious legal implications.|