MIL-STD-1629 FMEAs

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MIL-STD-1629 FMEAs

MIL-STD-1629, Procedures for Performing a Failure Mode, Effects and Criticality Analysis, is a long-recognized standard that is used by government, military, and commercial organizations worldwide. In addition to describing several methods for performing FMEAs, MIL-STD-1629 provides calculations for criticality and the ranking of failure modes based on severity classifications. For information about ordering this standard, see Ordering Reliability Standards.

MIL-STD-1629 is broken down into various methods for performing FMEA analysis that it refers to as tasks. While these analysis methods are similar to each other, they generally analyze different data. The FMEA module supports the use of all four analysis types described in MIL-STD-1629. The following table summarizes these analysis types.

Task	Description
Task 101: Failure Mode and Effects Analysis	A FMEA studies the results or effects of item failure on system operation and classifies each potential failure according to its severity.
Task 102: Criticality Analysis	A Criticality Analysis (CA) ranks each potential failure mode identified in the FMEA according to the combined influence of its severity classification and its probability of occurrence.
Task 103: FMEA–Maintainability Information	Maintainability information obtained during the FMEA provides early criteria for maintenance planning, logistics support analysis, test planning, inspection, and checkout requirements. Additionally, it helps to identify maintainability design features that require corrective action.
Task 104: Damage Mode and Effects Analysis	A Damage Mode and Effects Analysis (DMEA) provides early criteria for survivability and vulnerability assessments.