What is a Six Sigma Tree? Fault tree analysis?

#1
6 Sigma Tree

Our customer, Delphi, has asked us to do a "6 sigma Tree". Does anyone have experience and insight regarding 6 Sigma Trees? It seems to me to be Delphi's CA/8D d'jour.
 
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R

Rob Nix

#2
I just asked a Delphi guy out on our shop floor if he'd ever heard of a six sigma tree, and he said, "no, I never heard of that".

However, a google search turned up isixsigma.com's definition of a "tree diagram" as follows:

Breaks down or stratifies ideas in progressively greater detail. The objective is to partition a big idea or problem into its smaller components, making the idea easier to understand, or the problem easier to solve.
Perhaps that is what is being referred to.
 
B

Bill Ryan - 2007

#4
I just looked at the Delphi Covisint Supplier Community Portal (whew!) and found no references or updates to any of their Supplier requirements.

Let us know if you find out from some other source than the Cove.
Bill
 
R

Rob Nix

#7
Dave,

I saw that one when I was searching google, and it does appear to be a rudimentary fault tree diagram (as Ben suggested).
 
D

Dave Strouse

#8
Don't Understand

SteveTIB -

Why don't you ask your customer what it is they want?

Probably way to simple.

Are you thinking it is better to get numerous opinions from this forum and hope you maybe get what they want?

If you are too shy to ask them to clarify specifications and requests that are unclear to you, will you long remain a supplier to them?
 

Wes Bucey

Quite Involved in Discussions
#9
When in doubt - ASK!

Dave Strouse said:
SteveTIB -

Why don't you ask your customer what it is they want?
I echo Dave Strouse. This is all part of Contract Review. Delphi is unfair when they "assume" [broken down into its usual components] all suppliers live and breathe the Delphi program.

My complaint with customers like Delphi almost always concludes with some variation of "When I become Ruler of the Universe . . . ."
 

Bigfoot

Involved - Posts
#10
I echo the comments of Dave strouse and Wes. Ask them what they are after in clear terms. If they can't provide you the information on how, where, what this Tree is or is supposed to look like, then I would suggest using the Fault tree analysis. I am currently supplying Delphi and have not heard of this. :confused:
 
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