關(guān)于fmea的培訓(xùn)資料(英文版)-預(yù)覽頁(yè)
【正文】 the customer’s process or product. Q u ality Forw ard SystemStep 5 – Assign Occurrence Rating ? The occurrence rating is a measure of how often an failure mode may occur. ? Best method for determine occurrence rating is to use actual data from the process (for example, failure logs or process capability data). ? If actual data is not available, the team needs to estimate how often a failure mode could occur. ? Team can make a better estimate of how likely a failure mode is to occur and at what frequency by knowing the potential causes of failure. ? Ratings based on 10point scale, with 1 being the lowest rating and 10 being the highest. ? General example on next page – may be customized by team for their specific FMEA project. Q u ality Forw ard SystemStep 5 continued – Occurrence Rating Scale Example Rating Description Potential Failure Rate 10 Very High – Failure is almost inevitable More than one occurrence per day or a probability of more than three occurrences in 10 events (Cpk ). 9 One occurrence every three to four days or a probability of three occurrences in 10 events (Cpk approximately equal to ). 8 High – Repeated failures One occurrence per week or a probability of 5 occurrences in 100 events (Cpk approximately equal to ). 7 One occurrence every month or one occurrence in 100 events (Cpk approximately equal to ) 6 Moderate – Occasional failures One occurrence every three months or three occurrences in 1,000 events (Cpk approximately equal to ) 5 One occurrence every six months to one year or one occurrence in 10,000 events (Cpk approximately equal to ) 4 One occurrence per year or six occurrences in 100,000 events (Cpk approximately equal to ) 3 Low – Relatively few failures One occurrence every one to three years or six occurrences in 10 million events (Cpk approximately equal to ) 2 One occurrence every three to five years or two occurrences in one billion events (Cpk approximately equal to ) 1 Remote – Failure is unlikely One occurrence in greater than five years or less than two occurrences in one billion events (Cpk greater than ) Q u ality Forw ard SystemStep 6 – Assign Detection Rating ? The detection rating looks at how likely it is that a failure or the effect of a failure will be detected. ? Start by identifying current controls that may detect a failure or effect of a failure (example – SPC or inprocess checks). ? More controls in place generates a low number (better) rating。 Q u ality Forw ard System? MiniData 數(shù)據(jù)分析工具（提供免費(fèi)普及版下載 ) Q u ality Forw ard System謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH
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