FMEA MIL-STD-1629A - ,_ . - . . - . _.... I : _ A M S C N 3...

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Unformatted text preview: ,_ . - . . - . _.... I : _ A M S C N 3 0 7 4 M I L - S T D - 1 6 2 9 A 24 NOVEMBER 1980 ~ - SUPERSEDING MIL-STD-1629 (SHIPS) 1 NOVEMBER 1974 MI L- STD- 2070 ( AS) 12 JUNE 1977 MILITARY STANDARD PROCEDURES FOR PERFORMING A FAILURE MODE, EFFECTS AND C R lT lC A L liV ANALYSIS l=SC RELI MIL-STD-1629A DEPARTMENT OF DEFENSE Washington, DC 20301 Procedures for performing a Failure Mode, Effects, and Criticality Analysis MIL-STD-1629A 1. This Military Standard is approved for use by all Departments and Agencies of the Department of Defense. 2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commanding Officer, Engineering Specifications and Standards Department (Code 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self- addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. ii M Tl,-STD - 1629A FOREWORD The failure mode, effects, I and criticality analysis (FMFCA) is an essential funytion in design,from concept through development. To be effective, the8mCA'must be iterative to correspond with the nature of the design probess itself. The extent of effort and sophistication of approach used in the FMECA will be dependent upon the nature and requirements of the individual program. This makes it necessary to tailor the requirements for an FMECA to each individual program. Tailoring requires that, regardless of the degree of sophistication, the FMECA must contribute meaningfully to program decision. A properly performed FMECA is invaluable to those who are responsible for making program decisions regarding the feasibility and adequacy of a design approach. The usefulness of the FMECA as a design tool and in the decision making process is dependent upon the effectiveness with which problem information is communicated for early design attention. Probably the greatest criticism of the FMECA has been its limited use in improving designs. The chief causes for this have been untimeliness and the isolated performance of the FMECA without adequate inputs to the design process. Timeliness is perhaps the most important factor in differentiating between effective and ineffective implementation of the FMECA. While the objective of an FMECA is to identify all modes of failure within a system design, its first purpose is the early identification of all catastrophic and critical failure possibilities so they can be eliminated or minimized through design correction at the earliest possible time. Therefore, the FMECA should be initiated as soon as preliminary design information is available at the higher system levels and extended to the lower levels as more information becomes available on the items in question....
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This note was uploaded on 05/11/2011 for the course ELECTRONIC 005 taught by Professor Haghbin during the Spring '10 term at Sharif University of Technology.

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FMEA MIL-STD-1629A - ,_ . - . . - . _.... I : _ A M S C N 3...

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