7/26/2019 FMEA Beijing Jiaotong

1/81

FMEA

2014.12.11

7/26/2019 FMEA Beijing Jiaotong

2/81

AFS

7/26/2019 FMEA Beijing Jiaotong

3/81

AFS

http

linkinside

7/26/2019 FMEA Beijing Jiaotong

4/81

AccordingtothecaseofAFS,makinga

Failure

ModeEffectAnalys

is.

Ex

ercise

7/26/2019 FMEA Beijing Jiaotong

5/81

Analysistechniquesforsyste

mreliability

Procedureforfailuremode

andeffec

tsanalysis(FMEA)

IEC

60812

7/26/2019 FMEA Beijing Jiaotong

6/81

Scope

I.providingtheproceduralsteps

necessaryto

perform

ananalysis

;

II.identifyin

gappropriateterms,a

ssumptions

,

criticality

measures,failuremodes;

III.defining

basicprinc

iples;

IV.providin

gexamples

ofthenecessary

workshe

etsorothertabularforms.

IEC60812(

1)

7/26/2019 FMEA Beijing Jiaotong

7/81

Normativereferences

I.IEC60300-3-1:2003,D

ependability

management

Part

3-1:Applicationguide

Analysistechniquesfor

dependab

ility

Guideonmethodolo

gy

II.IEC61025,Faulttreeanalysis(FTA

)

III.IEC61078,Analysiste

chniquesfor

dependability

Reliability

blockdiagrammethod

IEC60812(

2)

7/26/2019 FMEA Beijing Jiaotong

8/81

Definitions

IEC60812(

3)

item

failure

mode

failure

failurec

riticality

fault

system

failureeffect

failures

everity

7/26/2019 FMEA Beijing Jiaotong

9/81

Definitions

Item

anypart,component,d

evice,subsystem,functionalunit,

equipmen

torsystemthatcanbeindividuallyconsidered

NOTE1A

nitemmayc

onsistofhardware,softwa

reor

both,and

mayalsoinparticularcasesincludepe

ople.

NOTE2A

numberofitems,e.g.ap

opulationofitemsor

asample,mayitselfbe

consideredasanitem.

IEC60812(3

.1)

7/26/2019 FMEA Beijing Jiaotong

10/81

Definitions

failure

termina

tionofthe

abilityof

anitemto

perform

arequire

dfunction

IEC60812(3

.2)

7/26/2019 FMEA Beijing Jiaotong

11/81

Definitions

fault

stateofanitemcharacteriz

edbytheinabilitytoperformarequired

function,ex

cludingtheinab

ilityduringpreventivemaintena

nceor

otherplann

edactions,orduetolackofext

ernalresources

NOTE1Afaultisoftenthe

resultofafailureoftheitemits

elf,but

mayexistw

ithoutpriorfailu

re.

NOTE2In

thisdocument

faultisusedinterchangeablyw

iththe

termfailureforhistoricalr

easons.

IEC60812(3

.3)

7/26/2019 FMEA Beijing Jiaotong

12/81

Definitions

failureeffect

consequenceofa

failurem

odeintermsof

theope

ration,fun

ctionorstatusofth

eitem

IEC60812(3

.4)

7/26/2019 FMEA Beijing Jiaotong

13/81

Definitions

failuremode

mannerinwhichanitemfa

ils

IEC60812(3

.5)

7/26/2019 FMEA Beijing Jiaotong

14/81

Definitions

failurecriticality

combinationofth

eseverity

ofaneffe

ct

andthe

frequencyofitsoccurrenceo

r

otherattributesofafailure

asameasure

ofthen

eedforad

dressing

andmitiga

tion

IEC60812(3

.6)

7/26/2019 FMEA Beijing Jiaotong

15/81

Definitions

system

setofinterr

elatedorinteractingelements

NOTE1In

thecontextofdependability,as

ystemwillhave

a)definedpurposesexpres

sedintermsof

requiredfunctio

ns;

b)statedco

nditionsofoperationuse

c)adefined

boundary.

NOTE2Th

estructureofa

systemishierarchical.

IEC60812(3

.7)

7/26/2019 FMEA Beijing Jiaotong

16/81

Definitions

failureseverity

significanceorgradingofth

efailure

modes

effecton

itemoperation,onthe

itemsurrounding,oronthe

itemoperator;

failuremodeeffectseverity

asrelatedto

thedefinedboundariesoftheanalyzed

system

IEC60812(3

.8)

7/26/2019 FMEA Beijing Jiaotong

17/81

Overvie

w

Introduction

Purposeandobje

ctivesoftheanalys

is

IEC60812(

4)

7/26/2019 FMEA Beijing Jiaotong

18/81

Overvie

w

IntroductionIE

C60812(4

.1)

7/26/2019 FMEA Beijing Jiaotong

19/81

Overvie

w

Purposeandobjectivesoftheanalys

is

IEC60812(4

.2)

7/26/2019 FMEA Beijing Jiaotong

20/81

Failure

modesan

deffectsanalysis

Genera

lconsider

ations

Preliminarytasks

Failure

mode,effects,andcriticality

analysis(FMECA

)

Report

ofanalysis

IEC60812(

5)

7/26/2019 FMEA Beijing Jiaotong

21/81

Failure

modesan

deffectsanalysis

Genera

lconsiderations

IEC60812(5

.1)

7/26/2019 FMEA Beijing Jiaotong

22/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Planningforth

eanalysis

Systemstructure

Failuremodedetermination

Failurecauses

Failureeffects

Detectionmethods

Failurecompe

nsatingprovisions

Severityclassification

Frequencyorprobabilityofoccurrence

Analysisproce

dure

IEC60812(5

.2)

7/26/2019 FMEA Beijing Jiaotong

23/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Planningforth

eanalysis

IEC60

812(5.2.1)

7/26/2019 FMEA Beijing Jiaotong

24/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Informationon

systemstructure

Definingsyste

mboundaryforthe

analysis

Levelsofanalysis

Representatio

nofsystemstructur

e

Systeminitiation,operation,controlandmaintenance

Systemenviro

nment

IEC60

812(5.2.2)

7/26/2019 FMEA Beijing Jiaotong

25/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Informationon

systemstructure

IEC608

12(5.2

.2.1)

7/26/2019 FMEA Beijing Jiaotong

26/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Definingsyste

mboundaryforthe

analysis

IEC608

12(5.2

.2.2)

7/26/2019 FMEA Beijing Jiaotong

27/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

LevelsofanalysisIE

C608

12(5.2

.2.3)

7/26/2019 FMEA Beijing Jiaotong

28/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Representatio

nofsystemstructur

e

IEC608

12(5.2

.2.4)

7/26/2019 FMEA Beijing Jiaotong

29/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Systeminitiation,operation,controlandmaintenance

IEC608

12(5.2

.2.5)

7/26/2019 FMEA Beijing Jiaotong

30/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Systemstructure

Systemenviro

nment

IEC608

12(5.2

.2.6)

7/26/2019 FMEA Beijing Jiaotong

31/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failuremodedetermination

IEC60

812(5.2.3)

7/26/2019 FMEA Beijing Jiaotong

32/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failurecauses

IEC60

812(5.2.4)

7/26/2019 FMEA Beijing Jiaotong

33/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failureeffects

Failureeffects

definition

Localfailuree

ffects

Failureeffects

atthesystemlevel

IEC60

812(5.2.5)

7/26/2019 FMEA Beijing Jiaotong

34/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failureeffects

Failureeffects

definition

IEC608

12(5.2

.5.1)

7/26/2019 FMEA Beijing Jiaotong

35/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failureeffects

Localfailuree

ffects

IEC608

12(5.2

.5.2)

7/26/2019 FMEA Beijing Jiaotong

36/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failureeffects

Failureeffects

atthesystemlevel

IEC608

12(5.2

.5.3)

7/26/2019 FMEA Beijing Jiaotong

37/81

Failure

modesan

deffectsanalysis

Preliminarytasks

DetectionmethodsIE

C60

812(5.2.6)

7/26/2019 FMEA Beijing Jiaotong

38/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Failurecompe

nsatingprovisions

IEC60

812(5.2.7)

7/26/2019 FMEA Beijing Jiaotong

39/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Severityclassification

IEC60

812(5.2.8)

7/26/2019 FMEA Beijing Jiaotong

40/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Frequencyorprobabilityofoccurrence

IEC60

812(5.2.9)

7/26/2019 FMEA Beijing Jiaotong

41/81

Failure

modesan

deffectsanalysis

Preliminarytasks

Analysisproce

dureIE

C60812(5.2.10)

7/26/2019 FMEA Beijing Jiaotong

42/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Purposeof

analysis

Risk,R,andriskprioritynu

mber(RPN)

RelationshipbetweenFME

CAandriskana

lysis

Failuremod

efailurerate,p

robability,andc

riticalitynumber

determination

Riskacceptabilityassessm

ent

FMECAtyp

eswiththerank

ingscales

IEC60812(5

.3)

7/26/2019 FMEA Beijing Jiaotong

43/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Purposeof

analysis

IEC60

812(5.3.1)

7/26/2019 FMEA Beijing Jiaotong

44/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Risk,R,andriskprioritynu

mber(RPN)

IEC60

812(5.3.2)

7/26/2019 FMEA Beijing Jiaotong

45/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

RelationshipbetweenFME

CAandriskana

lysis

IEC60

812(5.3.3)

7/26/2019 FMEA Beijing Jiaotong

46/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Failuremod

efailurerate,p

robability,andc

riticalitynumber

determination

Criticalitym

atrixIE

C60

812(5.3.4)

7/26/2019 FMEA Beijing Jiaotong

47/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Failuremod

efailurerate,p

robability,andc

riticalitynumber

determination

Criticalitym

atrix

IEC608

12(5.3

.4.1)

7/26/2019 FMEA Beijing Jiaotong

48/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

Riskacceptabilityassessm

ent

IEC60

812(5.3.5)

7/26/2019 FMEA Beijing Jiaotong

49/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

FMECAtyp

eswiththerank

ingscales

Alternateseveritydetermination

Alternatedeterminationofoccurrence

Ratingoffa

iluredetectionp

robability

Riskevalua

tionIE

C60

812(5.3.6)

7/26/2019 FMEA Beijing Jiaotong

50/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

FMECAtyp

eswiththerank

ingscales

Alternateseveritydetermination

IEC608

12(5.3

.6.1)

7/26/2019 FMEA Beijing Jiaotong

51/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

FMECAtyp

eswiththerank

ingscales

Alternatedeterminationofoccurrence

IEC608

12(5.3

.6.2)

7/26/2019 FMEA Beijing Jiaotong

52/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

FMECAtyp

eswiththerank

ingscales

Ratingoffa

iluredetectionp

robability

IEC608

12(5.3

.6.3)

7/26/2019 FMEA Beijing Jiaotong

53/81

Failure

modesan

deffectsanalysis

Failure

mode,effects,and

criticality

analysis(FMECA

)

FMECAtyp

eswiththerank

ingscales

Riskevalua

tion

IEC608

12(5.3

.6.4)

7/26/2019 FMEA Beijing Jiaotong

54/81

Failure

modesan

deffectsanalysis

Report

ofanalysis

Scope

andconte

ntofarep

ort

Effects

summary

IEC60812(5

.4)

7/26/2019 FMEA Beijing Jiaotong

55/81

Failure

modesan

deffectsanalysis

Report

ofanalysis

Scopeandcontentofarep

ort

IEC60

812(5.4.1)

7/26/2019 FMEA Beijing Jiaotong

56/81

Failure

modesan

deffectsanalysis

Report

ofanalysis

Scopeandcontentofarep

ort

IEC60

812(5.4.2)

7/26/2019 FMEA Beijing Jiaotong

57/81

Otherc

onsiderations

Commo

n-causefailures

Human

factors

Softwareerrors

FMEAregarding

conseque

ncesofsy

stem

failure

IEC60812(

6)

7/26/2019 FMEA Beijing Jiaotong

58/81

Otherc

onsiderations

Common-causefailures

IEC60812(6

.1)

7/26/2019 FMEA Beijing Jiaotong

59/81

Otherc

onsiderations

Human

factors

IEC60812(6

.2)

7/26/2019 FMEA Beijing Jiaotong

60/81

Otherc

onsiderations

Softwareerrors

IEC60812(6

.3)

7/26/2019 FMEA Beijing Jiaotong

61/81

Otherc

onsiderations

FMEAregarding

conseque

ncesofsy

stem

failure

IEC60812(6

.4)

7/26/2019 FMEA Beijing Jiaotong

62/81

Applica

tions

UseofFMEA/FM

ECA

BenefitsofFMEA

Limitationsandd

eficienciesofFMEA

Relationshipswithothermethods

IEC60812(

7)

7/26/2019 FMEA Beijing Jiaotong

63/81

Applica

tions

UseofFMEA/FM

ECA

IEC60812(7

.1)

7/26/2019 FMEA Beijing Jiaotong

64/81

Applica

tions

BenefitsofFMEA

IEC60812(7

.2)

7/26/2019 FMEA Beijing Jiaotong

65/81

Applica

tions

Limitationsandd

eficienciesofFMEA

IEC60812(7

.3)

7/26/2019 FMEA Beijing Jiaotong

66/81

Applica

tions

Relationshipswithothermethods

IEC60812(7

.4)

7/26/2019 FMEA Beijing Jiaotong

67/81

Annex

AnnexASummaryofproceduresfor

FMEAandFMEC

A

AnnexBExamplesofanalyses

IEC60812(

8)

7/26/2019 FMEA Beijing Jiaotong

68/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

Stepsf

orperform

anceofa

nalysis

FMEAworksheet

IEC60812(8

.1)

7/26/2019 FMEA Beijing Jiaotong

69/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

Stepsforperform

anceofanalysis

IEC60

812(8.1.1)

7/26/2019 FMEA Beijing Jiaotong

70/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

FMEAworksheet

Scopeo

faworkshe

et

Workshe

etheader

Workshe

etentries

Workshe

etremarks

IEC60

812(8.1.2)

7/26/2019 FMEA Beijing Jiaotong

71/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

FMEAworksheet

Scopeo

faworkshe

et

IEC608

12(8.1

.2.1)

7/26/2019 FMEA Beijing Jiaotong

72/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

FMEAworksheet

Workshe

etheader

IEC608

12(8.1

.2.2)

7/26/2019 FMEA Beijing Jiaotong

73/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

FMEAworksheet

Workshe

etentries

IEC608

12(8.1

.2.3)

7/26/2019 FMEA Beijing Jiaotong

74/81

Annex

ASummaryofprocedures

forFMEA

and

FMECA

FMEAworksheet

Workshe

etremarks

IEC608

12(8.1

.2.4)

7/26/2019 FMEA Beijing Jiaotong

75/81

Annex

BExam

plesofanalyses

Example

1

FMEC

Aforapartofautomotive

electronicswithRPNcalculatio

n

Example

2

FMEA

forsub-subsystemofa

motor-generatorset

Example

3

FMEC

Aforaman

ufacturing

process

IEC60812(8

.2)

7/26/2019 FMEA Beijing Jiaotong

76/81

Annex

BExam

plesofanalyses

Example

1

FMEC

Aforapart

ofautomotive

electronicswithRPNcalculatio

n

IEC60

812(8.2.1)

7/26/2019 FMEA Beijing Jiaotong

77/81

Annex

BExam

plesofanalyses

Example

2

FMEA

forsub-subsystemofa

motor-generatorset

IEC60

812(8.2.2)

7/26/2019 FMEA Beijing Jiaotong

78/81

Annex

BExam

plesofanalyses

Example

3

FMEC

Aforaman

ufacturing

process

IEC60

812(8.2.3)

7/26/2019 FMEA Beijing Jiaotong

79/81

Bibliography

[1]BS5760-5:1991,Reliabilityofsystems,equipmentandcomponents

analysis(FMEAandFMECA)

[2]SAEJ1739:2000,

PotentialFailureModeandEffectsAnalysisinDesign(DesignFMEA)andPotentialFailureModeand

EffectsAnalysisinManufacturingandAssemblyPr

ocesses(ProcessFMEA),and

PotentialFailureModeandE

ffectsAnalysisfor

Machinery

[3]SAEARP5580:20

01,

FailureModes,

Effects,an

dCriticalityAnalysisProcedur

es

[4]AIAG,

PotentialFailureModeandEffectsAnalysis,

ThirdEdition,

2001

[5]M.

Krasich,

FaultTreeAnalysisforFailureMode

sIdentificationandProductR

eliabilityImprovement,tutorialpresentedatthe

ReliabilityandMainta

inabilitySymposium;TutorialProceedingsof2002,

2003,and2005.

[6]J.

Bowles,

AnAss

essmentofRPNPrioritization

inaFailureModesEffectsandCriticalityAnalysis,

technicalpaperpresented

attheReliabilityand

MaintainabilitySymposium,20

03.

[7]IEC60050(191):1

990,

InternationalElectrotech

nicalVocabulary(IEV)

Chap

ter191:Dependabilityandqu

alityofservice

[8]IEC60300-1,

Dep

endabilitymanagement

Part1:Dependabilitymanagemen

tsystems

[9]IEC60300-2,

Dep

endabilitymanagement

Part2:Guidelinesfordependabilitymanagement

[10]IEC60300-3-9,D

ependabilitymanagement

Part3:Applicationguide

Section9:Riskanalysisoftechno

logicalsystems

[11]IEC61160,

Form

aldesignreview

[12]IEC61165,

ApplicationofMarkovtechniques

[13]IEC60300-3-11,

Dependabilitymanagement

Part3-11:Applicationguide

Reliabilitycenteredmaintena

nce

[14]ISO9000:2000,Qualitymanagementsystems

Fundamentalsandvocabulary

IEC6

0812(10)

7/26/2019 FMEA Beijing Jiaotong

80/81

1)Choosingaco

mponentfromthecases,

2)makingaFailu

reModeE

ffectAna

lysis

foryourchoice,

3)then

discussingwhether

youoryo

ur

groups

atisfywith

theresultofFMEA

?And

why?

Dis

cussion

7/26/2019 FMEA Beijing Jiaotong

81/81

Seeyounexttime.