We address this possible issue in two ways.

1.       We list the certification markings that are on Safety Critical 
Components on our purchase print as “incoming inspection requirements”. When 
parts are received, our IQA department visually verifies that the certification 
markings on the parts match the print. If they are different, the parts are 
rejected until this issues has been resolved (possible the manufacturer changed 
the certification body, etc.).


2.       The purchase print also has a statement that says that the supplier 
must notify us in advance of any changes to the part including regulatory 
certifications and status. The purchase print is a type of contract between the 
supplier and the purchasing company.


3.       Our Compliance Department performs Production Audits (usually on an 
annual bases) on all families of products. During these audits, all safety 
critical components are verified that they are what they are supposed to be and 
verifies the certification markings.  The certification markings is also a type 
of contract or declaration from the manufacturer.

Datasheets and pages from the manufacturer’s catalog that shows certification 
marks, symbols, or a list of standards are really meaningless and as others 
have already pointed out this information can change without warning.

The Other Brian

From: Regan Arndt [mailto:[email protected]]
Sent: Thursday, September 21, 2017 4:39 PM
To: [email protected]
Subject: [PSES] Safety critical component part #'s and Agency approvals

Greetings everyone,

My experience in regulatory compliance dates back to 1994 where it was a 
foregone conclusion that most component manufacturers did not identify their 
agency certification as a unique identifier in their part number.

I have seen some good progress over the years, but I also believe that the 
industry still continues to eliminate redundant certification (due to standards 
harmonization) or sometimes complete agency certification (for the sake of cost 
reduction) on components without changing their respective part number. Or even 
worse, continue to advertise that the component is approved but in reality, it 
is not.

Has anyone experienced anything recently that they wish to share?

P.S. I am updating my old safety presentation and need some good examples 
before I present again to our local IEEE chapter meeting.

Thanks for sharing whatever you can. (privately or within this forum)

Cheers!
Regan
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