QSB过程失效模式及后果分析.pdf

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1、降低风险的程序主动式RPN降低流程:降低潜在质量失效的风险被动式对已发生的质量失效建立防错装置FR&PSNCMVSLPAEPVWPOSWI(SOS)OI(JES)SOT(JIT)RiskReductContamSCM1GeneralMotorsCorporation.Allrightsreserved.QSBWORKSHOPREV.111406过程失效模式及效果分析定义•是一个格式化程序，用以识别和消除潜在失效模式•是一个识别每一个过程步骤的分析技术–过程可能达不到要求的情形–对内部/外部顾客的影响(严重度)–失效可能发生的频率(发生频度)–当前控制的

2、效果(预防和可探测度)–原因和结果的等级(风险顺序数)FR&PSNCMVSLPAEPVWPOSWI(SOS)OI(JES)SOT(JIT)RiskReductContamSCM2GeneralMotorsCorporation.Allrightsreserved.QSBWORKSHOPREV.111406严重度分级Criteria:SeverityofEffectCriteria:SeverityofEffectThisrankingresultswhenapotentialfailuremoderesultsinaThisrankingresults

3、whenapotentialfailuremodefinalcustomerand/oramanufacturing/assemblyplantdefect.resultsinafinalcustomerand/oraThefinalcustomershouldalwaysbeconsideredfirst.Ifbothmanufacturing/assemblyplantdefect.Thefinaloccur,usethehigherofthetwoseverities.customershouldalwaysbeconsideredfirst.I

4、fbothEffect(CustomerEffect)occur,usethehigherofthetwoseverities.Ranking(Manufacturing/AssemblyEffect)HazardousVeryhighseverityrankingwhenapotentialfailuremodeaffectsOrmayendangeroperator(machineorassembly)10safevehicleoperationand/orinvolvesnoncompliancewithwithoutwarning.withou

5、twarninggovernmentregulationwithoutwarning.HazardousVeryhighseverityrankingwhenapotentialfailuremodeaffectsOrmayendangeroperator(machineorassembly)with9safevehicleoperationand/orinvolvesnoncompliancewithwarning.withwarninggovernmentregulationwithwarning.VeryHighVehicle/iteminope

6、rable(lossofprimaryfunction).Or100%ofproductmayhavetobescrapped,or8vehicle/itemrepairedinrepairdepartmentwitharepairtimegreaterthanonehour.HighVehicle/itemoperablebutatareducedlevelofperformance.Orproductmayhavetobesortedandaportion(less7Customerverydissatisfied.than100%)scrappe

7、d,orvehicle/itemrepairedinrepairdepartmentwitharepairtimebetweenahalf-hourandanhour.ModerateVehicle/itemoperablebutComfort/Convenienceitem(s)Oraportion(lessthan100%)oftheproductmayhave6inoperable.CustomerDissatisfied.tobescrappedwithnosorting,oravehicle/itemrepairedinrepairdepar

8、tmentwitharepairtimelessthanahalf-hour.LowVehic