【正文】 PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH 。 28 OCCURRENCE RATING FOR PRODUCT FMEAQualitative Approach Ranking Quantitative ApproachLikehood of this happens=============================================================Remote :Situation Unlikely=============================================================Low : 2Situation relatively few 3=============================================================Moderate : 4Situation occasional occures 56=============================================================High : 7Situation repeated occures 8=============================================================Extreme : 9Almost inevitable 10=============================================================Possible failure rate through out thedesign life based on field performance onsome similar products under similarfields condition1 1 PPM 50 PPM 250 PPM % % % % % % %參考資料 : 發(fā)生度評估 產(chǎn)品 ,結(jié)構(gòu)型 FMEA 29 OCCURRENCE RATING FOR PROCESS FMEABased on SPC of related RankingSignificant variables=============================================================Remote :Situation unlikely 16 Standard Deviations Control=============================================================Almost Remote(SU) :5 Standard Deviations Control=============================================================VERY Low(SU) :4 Standard Deviations Control=============================================================Low :Situation relatively few 43 Standard Deviations Control 5=============================================================Moderate :Situation occasional occures3 Standard Deviations Control 6but occasionally out of control 7=============================================================High :Situation frequent occures 8SPC is questionable, but havesome sort of control=============================================================Very High :Situation repeated occures=============================================================Extreme :Almost inevitable=============================================================3 250 PPM 1000 PPM (%) %10 % % %Based on Actual OperationPerformance Data, or Historical Dataon Similar Variables 1 PPM2 50 PPM %9 %參考資料 : 發(fā)生度評估 流程型 FMEA 2023/2/24 30 Ranking Degree of Impacts on Function(F) or Appearance(A)=============================================================1 Improbable/ Minor: Not perceptible, not noticeable (F) The consequence will not have any perceptible impact on the performance of product (A) The user will not notice the consequence=============================================================2 3 Insignificant/ Low, Negligible: Nuisance, noticeable (F) Nuisance but likely negligible=============================================================4 5 Moderately Significant: Dissatisfaction (A F) The user will notice a negative impact as failure occurs, ., difficult to apply, difficult to use, disfort, etc. (F) Partial of the system operable at reduced performance, and gradual performance degradation=============================================================6 7 Significant/ High: Annoyance (A F) The failure causes greater annoyance on the part of user (F) Partial system function lost, but still can use it without safety concern。 對 最終的影響、當(dāng)站的影響、次 /上階的影響，要分開 個別評估。 建議的敘述方式 (對內(nèi)容作陳述 ) 例 :作業(yè)員未能完成封合作業(yè) 設(shè)備螺絲鬆脫 零件負(fù)載過高 應(yīng)力計算錯誤 … 不 建議的敘述方式 (對對象作陳述 ) 例 :作業(yè)員錯誤 設(shè)備當(dāng)機(jī) 4 FMEA 分析 分析可能發(fā)生原因 2023/2/24 21 製 造 流 程 敘 述編 輯 序 號目 前 狀 況 結(jié) 果現(xiàn) 有 的製 程 管制發(fā)生度嚴(yán)重性檢出率風(fēng) 險 評估 係 數(shù)(RPN)建 議 矯正 措 施矯 正 措施 選 定發(fā)生度嚴(yán)重性檢出率風(fēng) 險 評估 係 數(shù)(RPN)FMEA 日 期Revision 責(zé) 任 者與 完 成日期 FMEA關(guān)鍵性、管制性、顯 著、重要性潛 在 失效 的 影響製造程序名稱/步驟特 定 的功 能/ 規(guī)格 需 求潛 在 的 功能 失 效 模式製 造 程 序可 能 造 成失 效 的 原因 FMEA 分析 判定 重要性等級 判定流程順序 (產(chǎn)品結(jié)構(gòu) )的 重要性等級 : 與 “ 人身安全 “有關(guān) : 與“ 法律規(guī)章、政令 … ” 有關(guān) : 為 流程的關(guān)鍵性步驟 或 產(chǎn)品的