What is severity occurrence and detection in FMEA?

Severity, which rates the severity of the potential effect of the failure. Occurrence, which rates the likelihood that the failure will occur. Detection, which rates the likelihood that the problem will be detected before it reaches the end-user/customer.

How do you rank severity in FMEA?

Criteria for Giving Severity Ranking. The ratings for Severity in FMEA are generally given on a scale of 1 to 10, based on the criticality of the risk identified. The most critical risks receive the highest severity ratings.

What is occurrence in FMEA?

In an FMEA, Occurrence is a ranking number associated with the likelihood that the failure mode and its associated cause will be present in the item being analyzed. For System and Design FMEAs, the occurrence ranking considers the likelihood of occurrence during the design life of the product.

How do you reduce severity in FMEA?

The truth is that Severity ranking cannot be changed at all. No matter what you do. If Severity of a Failure Mode has to be addressed, it can be done by either summarily eliminating the Failure Mode or by eliminating the Effect with which the Severity ranking is associated. This can be done through design.