Is it possible to reduce FMEA Occurrence and Detection Ranking after corrective action taken for customer complaints?

Ashok sunder

Starting to get Involved
#1
sir,
I have small clarification on PFMEA detection & occurrence rating .If customer complaint arises we have take corrective action and the same action will be included in PFMEA. continuously six months the corrective action was monitored. Its is possibility to reduce the occurrence and detection value?
 
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Pjservan

Involved In Discussions
#3
It depends on the action taken. The fact that it has not repeated itself may have an effect on your occurrence levels per Andy's comments above but not necessarily on the detection levels.
 

Ashok sunder

Starting to get Involved
#5
It depends on the action taken. The fact that it has not repeated itself may have an effect on your occurrence levels per Andy's comments above but not necessarily on the detection levels.
Thank you,
We have take corrective action to prevent one of the cause of failure mode, at that time we have change the occurrence value
 

somashekar

Staff member
Super Moderator
#6
By logic, yes it can be reduced. It all depends upon the technical team and the expertise you have used in the PFMEA formulating. You should rather address your FMEA periodically and check if you can have a new low and the inputs can be from various areas, corrective actions being a significant one.
 

Bev D

Heretical Statistician
Staff member
Super Moderator
#7
What was the actual occurrence rate of the failure you took corrective action on and was it higher or lower than that on your FMEA?
Do you have proof in the form of a control chart that the failure rate actually decreased after the corrective action was implemented?
Was your original occurrence rate based on actual data or was it a 'guess' (some call this engineering judgment)
Was this an expected or unexpected failure?
 
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