What "Key Date" in an FMEA Represents

rnsvasan

Involved In Discussions
#1
What "Key Date" actually represents?.
In my understanding this is the date on which team starts preparing the FMEA and "Origin Date" is first release of the complied document.
Is my understanding right ? if worng pl. correct.
:agree1:
 
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Stijloor

Staff member
Super Moderator
#2
Re: Key date in FMEA

What "Key Date" actually represents?.
In my understanding this is the date on which team starts preparing the FMEA and "Origin Date" is first release of the complied document.
Is my understanding right ? If wrong pl. correct.
:agree1:
For a Design FMEA:
Key date is the initial FMEA due date, which should not exceed the scheduled production design release date.

For a Process FMEA:
Key date is the initial FMEA due date, which should not exceed the scheduled start of production date.
The initial FMEA due date should not exceed the customer required PPAP submission date.

In short, have all FMEA work performed before releasing a design and/or starting production.

Stijloor.
 
#5
Re: Key Date in FMEA

For a Process FMEA:
Key date is the initial FMEA due date, which should not exceed the scheduled start of production date.
The initial FMEA due date should not exceed the customer required PPAP submission date.
Stij-
:agree1: Agreed, according to an SQA at some automaker owned by the three-headed hound of Hades, the following applies:
Key Date = Scheduled PPAP submission date (a.k.a. Parts Sign Off or PSO) as assigned by the customer's Project Manager or SQA.
So Key date should be before origin date and both doesnt require change.
:nope:No. The FMEA date (see FMEA 3rd Edition Table 5, Item 7) is "...the date the original FMEA was compiled and the latest revision date." So your Key Date and FMEA date (orig.) should not change. The FMEA date (orig.) should be before the Key Date because you must to have a FMEA before your PPAP submission (if you are doing it right, anyway). The only date on a FMEA that should change is the FMEA date (Rev.) and this date should represent the last date of any changes or additions to the FMEA.
-IC
 

Jim Wynne

Staff member
Admin
#6
Re: Key Date in FMEA

Stij-
The only date on a FMEA that should change is the FMEA date (Rev.) and this date should represent the last date of any changes or additions to the FMEA.
-IC
The scheduled PPAP submission date (the key date) can (and often does) change, and the FMEA document should be updated accordingly. The origin date is the only one that shouldn't change.
 
#7
Re: Key Date in FMEA

The scheduled PPAP submission date (the key date) can (and often does) change, and the FMEA document should be updated accordingly.
Good point, Jim. I was not as clear as I could be. As the supplier, you should not be changing the Key date because you are submitting PPAP early (or late). The Key date can change because your customer advises changes to the scheduled PPAP submission date. My response was colored by the fact that my customers tend to keep the same PPAP submission date, even when they have delayed the submission to suit their own purposes, so that they may beat me over the head with "late" FMEAs, etc. at some point in the future.
 
B

bgwiehle

#8
Re: Key Date in FMEA

The scheduled PPAP submission date (the key date) can (and often does) change, and the FMEA document should be updated accordingly. The origin date is the only one that shouldn't change.
Just to throw another complication into the works, DaimlerChrysler has insisted that the "Key Date" be the original PPDC date ((Chryslers's) Product and Process Design Complete) for the program.
PDDC date = CDS Quality Gate EF = Powerway gate 5 = V1 date - 75 weeks

As a result, we document multiple "key" dates.

B.G. Wiehle
 
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