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Re: FMEA review, RPN reduction - Any "rule of thumb" as to what makes an RPN too high
I like that Martin is looking at the high severity. One should always look for opportunities to reduce the severity by eliminating the FM or through the use of a compensating provision. However you can not always reduce the severity, nor is it always practical to do so. One can not understand the risk without taking into account the occurrence of the Causes. Pro-active / preventative controls that reduce the frequency of causes are often less expensive and more effective at reducing the risk. If I have a Severity of 8 and an occurrence of 1 associated with it, but I have a Severity of 7 and an occurrence of 4 associated with it. I will miss reducing the greater risk opportunity if I focus on Severity alone.
I like that Martin is looking at the high severity. One should always look for opportunities to reduce the severity by eliminating the FM or through the use of a compensating provision. However you can not always reduce the severity, nor is it always practical to do so. One can not understand the risk without taking into account the occurrence of the Causes. Pro-active / preventative controls that reduce the frequency of causes are often less expensive and more effective at reducing the risk. If I have a Severity of 8 and an occurrence of 1 associated with it, but I have a Severity of 7 and an occurrence of 4 associated with it. I will miss reducing the greater risk opportunity if I focus on Severity alone.
). Common sense needs to prevail in