Stijloor

Staff member
Super Moderator
#21
Hi

Can any body help me to answer:-
1) As per fourth edition there will be no limit to the RPN (e.g some companies take action above 100 RPN ONLY ) is it true???

2) AND IF S*O=36 even then action can be taken

WAITING FOR THE ANSWER,THANKS IN ADVANCE
Welcome to The Cove Forums!! :bigwave: :bigwave:

This 100 RPN threshold was never a requirement in any of the versions of the FMEA manuals. That is something companies put onto themselves. As an auditor, I found FMEA procedures stating that if an RPN value dropped below 100, no action needed to be taken. Obviously, all the RPN values were below 100. :mg:

An organization must decide on actions taken.

The FMEA manual has recommendations as far as taking action is concerned.

Look it up under "Recommended action."

Stijloor.
 
Last edited:
R

rku140

#22
Mark,

Yes, on first sight, it looks a little strange...but it's not a mistake. Here is why.. Occurrence rankings are influenced by the prevention controls provided that they are formally integrated in the process. For example, Poka Yoke's (which make a process more robust/error-proof) have a direct impact on the Occurrence rankings. That's why the Root Cause and Prevention columns are placed next to each other. You can still use the more traditional FMEA form if you wish. The 4th Edition manual offers various layouts. Remember, content is much more important than its package.

Stijloor.
Hi,

Does this mean that I can use any format for FMEA and still complying to the 4th Edition requirement?, why that all the format I am seeing is having the OCC after the Current Control (Prevention)?, still having the confusion..

B Rdgs
 
A

andtyl

#23
I can't answer the part about using "any format", but as far as the second question...

The Occ column in after the Preventions column because you are supposed to consider the occurance in light of the preventive actions that you have taken. If you complete more preventive actions, you can re-evaluate the occurance.

The Det column is after the Detections column because you are supposed to consider the likelihood of detecting the problem via the detection actions you are planning to take.

Andtyl :)
 

Stijloor

Staff member
Super Moderator
#24
Hi,

Does this mean that I can use any format for FMEA and still complying to the 4th Edition requirement?, why that all the format I am seeing is having the OCC after the Current Control (Prevention)?, still having the confusion..

B Rdgs
Remember, the AIAG FMEA (4th Ed.) Manual is a set of guidelines, not a requirement. The use of the manual is often required by automotive customers, but the FMEA process and its associated form and layout is determined by you.

Stijloor.
 
R

rku140

#26
Remember, the AIAG FMEA (4th Ed.) Manual is a set of guidelines, not a requirement. The use of the manual is often required by automotive customers, but the FMEA process and its associated form and layout is determined by you.

Stijloor.
HI,

Thank you for the clarification.

B Rgds :)
 
R

rku140

#27
I can't answer the part about using "any format", but as far as the second question...

The Occ column in after the Preventions column because you are supposed to consider the occurance in light of the preventive actions that you have taken. If you complete more preventive actions, you can re-evaluate the occurance.

The Det column is after the Detections column because you are supposed to consider the likelihood of detecting the problem via the detection actions you are planning to take.

Andtyl :)
Hi,

Thks for the reply, now it is making some sense.

B Rgds. :)
 
R

rku140

#28
I can't answer the part about using "any format", but as far as the second question...

The Occ column in after the Preventions column because you are supposed to consider the occurance in light of the preventive actions that you have taken. If you complete more preventive actions, you can re-evaluate the occurance.

The Det column is after the Detections column because you are supposed to consider the likelihood of detecting the problem via the detection actions you are planning to take.

Andtyl :)
HI,

for a particular failure mode or Potential cause consideration, If I am not able to determine the current process control (prevention), can I put 'none' in the column and just consider the OCC as it is or I must fill up the column?. Appreciate some input on this.

Rgds, :confused:
 
M

megahertz

#29
HI,

for a particular failure mode or Potential cause consideration, If I am not able to determine the current process control (prevention), can I put 'none' in the column and just consider the OCC as it is or I must fill up the column?. Appreciate some input on this.

Rgds, :confused:
Hi rku140,

I've seen some FMEA with empty collumn for current process control (prevention) and according to them, the occurence are totally based on the happening rate of that failure in their system. But I personally feel that we should have something in control such as work instruction or standardize operation sheet that we can put in as a control method.

rgds,


Wan Zamzahidi
 

Top Bottom