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The FMEA Mini-Series: Using an FMEA vs. SxO for Prioritizing

  • Thread starter kim.humphrey@at.siemens.c
  • Start date
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Bill Ryan - 2007

#81
I believe the 40 RPN bogie is only for GM Powertrain (which, of course, we're tier 1 to).

Bill
 

Bigfoot

Involved - Posts
#82
Re: The FMEA Mini-Series

Bill Ryan said:
I believe the 40 RPN bogie is only for GM Powertrain (which, of course, we're tier 1 to).

Bill
Yo are correct that it is currently only applicable to GM Powertrain, which I am happily not a Tier 1 to any longer.
 

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nancy chen

#83
Re: The FMEA Mini-Series

"As a general rule, RPNs should be 40 or below. Processes showing RPNs over 40 must obtain formal written approval from your GM SQE." It is the requirement of GM Powertrain.

Who has the experience of " Processes showing RPNs over 40 must obtain formal written approval from your GM SQE."?

nancy chen
 
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Bill Ryan - 2007

#84
Re: The FMEA Mini-Series

nancy chen said:
Who has the experience of " Processes showing RPNs over 40 must obtain formal written approval from your GM SQE."?
We don't have any PFMEAs that have every RPN under 40. The one part we supply Powertrain has very few under 40. I did not ask for "formal written approval". I told my SQE that the PFMEA had many RPNs over 40 and asked him if Powertrain was willing to cough up some money to help us get under 40 and he said "just submit it". Go figure :rolleyes:

Bill
 

Ragnar

Involved In Discussions
#85
Fantasic discussion: Some times the customer has "Prefered Method" of risk reduction activities, and some times they hide them in "Customer Specific Requirements" such as QSB (Quality Systems Basics) Attached is one of those "Perfered Methods" from the QSB work shop. I hope this is helpfull
Kind Regards:
Ragnar.
 

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Supercharged

#86
nancy chen said:
"As a general rule, RPNs should be 40 or below. Processes showing RPNs over 40 must obtain formal written approval from your GM SQE." It is the requirement of GM Powertrain.

Who has the experience of " Processes showing RPNs over 40 must obtain formal written approval from your GM SQE."?

nancy chen
Just launched a new program with GMPT and as with our previous 4 or 5 programs, our SQE provided us with a written waiver for the 40 target. Basically states we internally strive for RPN < 100 and have an active RPN reduction process to continually strive to push them ever lower. :whip:
 

Jim Wynne

Super Moderator
#87
"Target" RPNs are self-fulfilling prophecies. I strongly advise my suppliers against it, as the usual result will that the highest RPNs will be just below the target value. Common sense should always prevail.
 
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alokb

#88
Impact of severity on RPN.

Dear Sir,

Sorry for joining late, but this is response to Post # 1

We, in our Six sigma Project of Improving recovering efficiency in Copper recovery plant, have conducted a process FMEA to improve recovery, my observation is

# The issue with the higher RPN is to be addressed first , In my view these number only gives priority of taking action ,but do not leave any thing which has low RPN or are ‘trivial few’ after doing Pareto analysis.

# Severity in our case was more or less around 4. As safety was not an issue. Severity was to some extent a constant factor. So the reference given for page 43 for severity does not necessarily hold true.

Alok Bhatnagar
:thanks:
 
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