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Criticality matrix

From Wikipedia, the free encyclopedia

In operations research and engineering, a criticality matrix is a representation (often graphical) of failure modes along with their probabilities and severities.

Severity may be classified in four categories, with Level I as most severe or "catastrophic"; Level II for "critical"; Level III for "marginal"; and Level IV for "minor".[1]

Example[edit]

For example, an aircraft might have the following matrix:

Failure mode Severity Probability
Collision High Low
Engine failure High Low
Ice buildup Medium High

References[edit]

  1. ^ DTIC ADA278508: Failure Mode, Effects, and Criticality Analysis (FMECA). Reliable Analysis Center. 1993. pp. 26–29.