MIL STD- Procedures for Performing a Failure Mode, Effects and Criticality Analysis

Keywords FMECA FMECA procedures and performance MIL STD

4.1 General.
The failure mode, effects, and criticality analysis (FMECA) shall be planned and performed in accordance with the general requirements of this standard and the task(s) specified by the procuring activity.

4.2 Implementation.
The FMECA shall be initiated early in the design phase to aid in the evaluation of the design and to provide a basis for establishing corrective action priorities. The FMECA is an analysis procedure which documents all probable failures in a system within specified ground rules, determines by failure mode analysis the effect of each failure on system operation, identifies single failure Points, and ranks each failure according LO a severity classification of failure effect. This procedure is the result of two steps which, when combined, provide the FMECA. These two steps are:

a. Failure mode and effects analysis (FMEA).
b. Criticality analysis (CA).

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military standard
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1.1 Scope
This standard establishes requirements and procedures for performing a failure mode, effects, and criticality analysis (FMECA) to systematically evaluate and document, by item failure mode analysis, the potential impact of each functional or hardware failure on mission success, personnel and system safety, system performance, maintainability, and maintenance requirements. Each potential failure is ranked by the severity of its effect in order that appropriate corrective actions may be taken to eliminate or control the high risk items.

1.2 Application.
This standard applies to the acquisition of all designated DoD systems and equipment. It primarily applies to the program activity phases of demonstration and validation and full-scale engineering development; e.g., design, research and development, and test and evaluation. This standard also can be used during production and deployment to analyze the final hardware design or any major modifications. The FMECA tasks contained in this standard apply to all items of equipment. This standard does no~ apply to software. Appendix A contains additional application and tailoring guidelines.

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