Bob, that's been my practice working in Aerospace and Military, Medical,
Industrial, and now Commercial industries for the past 30+ years.   I'd
never had it questioned before.  The original design team signs off
either by hand or electronically and the "signatures" remain fixed
through normal revision processes.  If there's an offshoot or variant
created, or a significant redesign, then the new culprits sign off.
Regarding controlling changes in the revision blocks, I learned long ago
not to summarize them there, but to simply list the ECO or ECN reference
there so anyone needing the change information has to read the change
notice so they understand the full impact of the change.  Hope this
helps.


Bob Croslin
The Nielsen Company

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wilson, Bob
Sent: Wednesday, May 28, 2008 6:50 PM
To: [log in to unmask]
Subject: [TN] ASME

I have an engineer stating that each time we rev a drawing that we fill
out the "DRAWN BY" "CHECKED BY" and "APPROVED BY".

I thought I saw in ASME Y14.100-2004 where it said that you filled those
blocks out initially, then you controlled changes in the rev block and
by ECN/ECR approval.  At least that is how I remembered doing it in the
MIL-STD-100 days.

Can anyone send me a snippet out of the ASME of what I'm talking about?
Or am I talking through my hat?

(I'm going to buy the publication but I need something for the argument
at the moment.)

Thanks a bunch.

Bob Wilson
E/M Designer, CID+
SpectraSensors, Inc.
11027 Arrow Route
Rancho Cucamonga, CA 91730
(909) 948-4110
www.spectrasensors.com
www.ipc.org


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