IATF 16949 Clause 10.2.4 - Error Proofing

jfriess

Involved In Discussions
#21
What if your only error proofing is a device(with PLC) that accepts/ rejects parts based on temperature? The gages are calibrated and verified daily to ensure that they are accepting rejecting parts based on the limits that are set. It is not possible to have "rabbits".
 
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Bran

Starting to get Involved
#22
Per IATF 16949:2016, 3.1 Terms and definitions for the automotive industry

Page 12: Error proofing

Product and manufacturing process design and development to prevent manufacture of nonconforming products.
I'm finding "Process design that prevents manufacture of nonconforming product" a difficult concept. I can think of many process design elements that will reduce occurrence of nonconforming product, but none that will truly prevent it. Does anyone have any ideas?

A past BIQS auditor suggested I interpret "error-proofing" as:
  • Auto Shutdown
  • Auto measurements or Automatic data collection points
  • Auto QMR
  • Not auto-advancing
  • Intentional System Delays
Problem with this list is that none of these actually meet the IATF definition of "preventing manufacture". The system I implemented mirrors our EHS "error proofing" (snip below), but reading the IATF definition I think this is stretching the requirement to be more than is intended?

Should automated systems that reduce the occurrence of nonconforming product be considered "error proofing"? How would EP devices like this be tested for a simulated failure? They rely on programming which is validated prior to implementation

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Miner

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Admin
#23
Say you have a component that can be installed backwards. You could change the design to be 100% symmetrical so that it no longer matters, or you could change the design such that it physically cannot be assembled backwards.
 

Mikey324

Quite Involved in Discussions
#25
Re: IATF 16949 Clause 10.2.4 - Error-proofing question

Error-proofing device failures shall have a reaction plan.

Do they mean Mistake proofing rather than error proofing?
This just means how will you react if your error proofing device fails. If it can't detect a bad part, what will you do? 100% sorting? Increased visual inspection? Things like that.
 
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