Well, thank you Inge. Yes, there is quite a background of information to
pull from here, but most of it is focused on the needs of aerospace.
Acceptable levels of cleanliness are going to change depending on end use
environment, application, and industry segment. So, I was trying to get
some feedback from a broader perspective than just aerospace.
Principal Materials and Process Engineer
On Thu, Jul 7, 2016 at 10:14 AM, Inge Hernefjord <[log in to unmask]>
> Hi Doug, I think the knowledge aready exits within your prominent and
> on-the-leading-edge company. /Inge
> On 26 May 2016 at 16:59, Douglas Pauls <[log in to unmask]>
>> Good morning all,
>> One of the IPC groups that I am leading is presently wrestling with the
>> issue of minor vs. major change. Generally along the lines that if you
>> have a baselined or qualified manufacturing process, how much can that
>> process change before it needs to be re-baselined or re-qualified?
>> Sometimes this is referred to as Level 1 vs. Level 2 change.
>> So far, every quality documentation system that I have looked at, like
>> AS9100, ISO9000, etc., gets really fuzzy and uses vague terms when you
>> approach this issue. Most of these documentation systems have change
>> better defined for products, but get extremely fuzzy and extremely vague
>> about manufacturing processes.
>> This forum has a lot of very smart, very experienced people. How would you
>> differentiate a minor change, which would not impact form fit or function,
>> from a major change, which "could/would" impact form fit or function?
>> And I want all you lurkers to come out of the woodwork on this one.
>> Doug Pauls
>> Principal Materials and Process Engineer
>> Rockwell Collins
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