MIL-STD-1629-RevA - Barringer and Associates, Inc.

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MIbST&1629ATASK 105FAILURE MODE, ~FECTS, ND CRITICALITY ANALYSIS PIAN1. Purpose. The purpose of the FMECA plan is to documentthe contractors planned activities implementing the Failure ~de~Effects, and (criticality Analysis Tasks.1.1 Interrelationship. The FMECA plan shall not be requiredunless Task 1~1 is required..1.2 Application. This plan is used to evaluate planned FMECATask efforts by a contractor prior to plan approval. When approved. bythe procuring activity, the plan is used for monitoring and evaluatingcontractor implementation of the FMECA tasks. When a Reliability ProgramPlan, as a selected task from MIL-STD-785, has been proposed by theprocuring activity, the requirements of this Task shall be satisfied byincorporating the FMECA plan in the Reliability Program Plan.STANDARDS2. Documents referenced in Task 10S:MilitaryMIL-STD-470MIL-STD-780MIL-STD-785MIL-STD-1388MIL-STD-1591MIL-STD-2072MIL-STD-2080Vajntainability, Human Factors and SafetyWork Unit Codes for Aeronautical Equipment;Uniform Numbering SystemReliability Program for Systems and EquipmentDevelopment and ProductionLogistics Support AnalysisC)nAircraft, Fault Diagnosis, Subsystems,Analysis/Synthesis ofSurvivability, Aircraft; Establishment andConduct of Programs forMaintenance Plan Analysis for Aircraft andGround Support EquipmentsHANDBOOKSMilitaryMIL-HDBK-217Reliability Prediction of Electronic Equipment “105-1
MI I,-ST1)-1629A3. Content. The FMECA plan shall describe the contractor’sprocedures for implementing the specified requirements of this standardupdating the F~CA to reflect design changes, and use of the analysisresults to provide design guidance. Sample worksheet formats, groundrules, analysis assumptions, identification of the lowest indenturelevel of analysis, coding system description, failure definitions, andidentification of coincident use of the FMECA by the contractor’s reliabilityorganization and other organization elements shall be included in theplan.‘1,3.1 Worksheet formats. The contractor’s formats, whichorganize and document the FMECA and other analysis methods containedherein, shall include the information shown in the example formats,lnFigures 101.3, 102.1, 103.1, 104.1. The initial indenture level ofanalysis shall be identified (item name) on each worksheet, and eachsuccessive indenture level shall be documented on a separate worksheetor group of worksheets. A sample of the contractor’s worksheet formatsshall be included with the FMECA plan.3.2 Ground rules and assumptions. The contractor shalldevelop ground rules and analysis assumptions and include them in theFMECA plan. The ground rules shall identify the FMECA approach (e.g.,hardware, functional, or combination) , the lo~’rst indenture level to beanalyzed, and include general statements of v’hat constitutes a failureof the item in terms of performance criteria and allowable limits.Every effort should be made to ide~~tify ~[~d rec~rd al] ground rules andanalysis assumptions prior to initiation of the analysis; however,ground rules and analysis assumptions may be added for any item ifrequirements change. Additional ground rules and analysis assumptionsshall be documented and separately identified for inclusion in the FMECAreport.3.3 Indenture level. The indenture level applies to thesystem hardware or functional level at which failures are postulated.Unless otherwise specified, the contractor shall establish the lowestindenture level of analysis using the foll~)wing guidelines:a. The lowest level specified in the LSA candidate listto assure complete inputs for each 1.SA candidate.b. The lowest indenture level at which items are assigneda catastrophic (Category I) or critical (CategoryII) severity classifica&ion category (see 4.4.3).c. The specified or intended maintenance and repairlevel for items assigned a marginal (Category III)or minor (Category lV) sevet-ity classificationcategory (See 4.4.3).TASK 10524 November 1980
Page 1 and 2: MIL-STD-1629A24 NOVEMBER 1980SUPERS
Page 3 and 4: MT7,-STW 1629AFOREWORDIThe~failure
Page 5 and 6: ----MIL-STD-16Z9ACONTENTS(Continued
Page 7 and 8: MI1.-STD-1629A1. SCOPEThis standard
Page 9 and 10: MTL-STD-1 629A3. DEFINITIONS3.1 Ter
Page 11 and 12: !’11 L-!;’J’l)- 1629A3. 1.17.
Page 13 and 14: .MT1.-ST~-l629A4.3.5 Failure defini
Page 15 and 16: MTT,-sTn-1629Afor each mission, mis
Page 17 and 18: ?f?l.-STD-l629Ab. Des~ripGlon of de
Page 19 and 20: MT1,-STD-1629A3.2 Functional approa
Page 21 and 22: MI J,-STD-16?9Afunctional block dia
Page 23 and 24: MI L-STD-1629A5.6.2 Next higher lev
Page 25 and 26: Ml 1,-STD-1079Afurther amplified in
Page 27 and 28: MIL-STD-1629A. --1III[IIIIIIIIIIIii
Page 29 and 30: MIL-STD- 1629ATASK 102CRITICALITYAN
Page 31 and 32: IMII.-ST1)-162(]Ashown in Figure 10
Page 33 and 34: MIL-STD-1629Awhere:C* = Criticality
Page 35 and 36: MI I.-sTI)-I629AINCREASINGCRITICALI
Page 37 and 38: MIL-STD-1629A3*1 Failure predictabi
Page 39 and 40: .--— .-—--— , --—— ——
Page 41 and 42: MTL-STD- 1629A4\l Damage modes. All
Page 43: NI 1.-[; 1’1)- 1(); ?!)Au0.-.mr-r
Page 47 and 48: —..-A 1MIL-STD-1629AAPPENDIXA10.
Page 49 and 50: MIL-STD-1629A50.1.3 Intended use. T
Page 51 and 52: MIL-STD-1629AWhere:C= “ Criticali
Page 53 and 54: INSIRUCII ONS: In ● continuing ef
Page 55 and 56: MIL3TD-1629ANotice 17 June 1983MILI
Page 57 and 58: MIL-STD-1629ACONTENTS (Continued)Fi
Page 59 and 60: MIL-STD-1629ASPECIFICATIONSMilitary
Page 61 and 62: MIL-STD-1629Ad. Functional Failure
Page 63 and 64: MIL-STD-1629A..2’Ilm.o.,id1-< xQ
Page 65 and 66: —MIL-STD-1629A50.5 DMEA (Task 104
Page 67 and 68: MIL-STD-1629ACONTENTS (Continued)Pa
Page 69 and 70: .-MIL-STD-1629AAPPENDIX AAPPLICATIO
Page 71 and 72: 20-30Stop LCNMIL-STD-1629AEnter the
Page 73: NOTICE OFCANCELLATIONNOT MEASUREMEN

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