And its worth 6 cents and a lot more. I too had a conversation of this type
with our plant EHS manager today. I also suggested that everything be
removed off the bench and the surface be DRY before any boards etc. be put
back. Pick something with as high a volatile content (then flammability can
raise it ugly head) and as non-ionic as you can get to satisfy what you are
trying to do. If people screw up we are only looking at less than $200 a
pop, not Doug's, I mean anonymous person's, $50K units.
Here's how bad it can get: my daughter-in-law who works in health care in
western Canada told us of a recent case where a fit 20-something male wasn't
feeling well Thursday, was admitted to hospital Friday with H1N1 and was
dead by Sunday night. Scary.
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Thursday, August 27, 2009 12:20 PM
To: [log in to unmask]
Subject: Re: [TN] Germicides and Electronics...deadly mix?
Well, here is my opinion, and it is worth every penny you pay
for...............
Are the practices you describe a hazard to product reliability? Well, it
depends (you knew it was coming). As my trusty co-op and I gather more
data, this appears to be less and less of an issue, but how we are going
about the investigation may not directly apply to you. We clean, you
don't. We are Class 3 Aerospace, you Class 2 telecom. We coat, you
don't. We have a hostile end use environment, yours is pretty benign.
The timing on your question is wierd. I just got off the phone with our
lead industrial engineer who asked if we can place the hand sanitizers out
on the floor. Our people don't seem to be quite as panic stricken as you
describe, but the day is still young. I told him no, that we want to
keep these in the restrooms. My concern is two fold: (1) keeping it in
the bathroom gives an additional few minutes for the highly volatile
agents to evaporate as the operators go back to their work stations; and
(2) out in the work area, there is a much greater chance of something
stupid happening, like hitting the squirt dispensor, missing your hand and
having it land on an energized $50K top level unit. Uhhhhh, not that this
ever happens here, but I've heard it happens "other" places.........
So the question really becomes, how disciplined is your production floor
about making sure that all of your work in progress are in ESD bags or
totes or someways out of the work environment before Betty Lou or Billy
Bob starts spraying material. If you are satisfied that the discipline is
there, then this may be a non-issue. Ask yourself the question of what do
I do if the material DOES get sprayed on an assembly. Do you have the
ability to clean?
Looking up the MSDS for Dynakil (Lord, Google is a handy tool), it has a
18% non-volatile content and has an NFPA health code of 2, primarily
because it is both a germicide and an anti-fungal agent. Not sure that I
would want this as an aerosol around my workers, even in dilute form. Will
workers wear a simple dust mask while spraying to limit inhalation? The
active ingredient is N-Alkyl Benzalkonium Chloride and I get REAL nervous
anytime the word chloride and electronics are used in the same sentence.
The MSDS does list the material as being 100% water soluble, so I would
follow any surface cleaning of Dynakil with a wipedown of deionized or
distilled water. That would greatly minimize any risk of secondary
transfer.
My 6 cents worth.
Doug Pauls
pearl petras <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
08/27/2009 10:23 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
pearl petras <[log in to unmask]>
To
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cc
Subject
[TN] Germicides and Electronics...deadly mix?
So,... say a company is getting VERY active with precautions for H1N1...
And they supply spray bottles of germicidal cleansers such as Dynakil all
over the production floor and make it a requirement to wash down benches
every day. Also hand sanitizer dispensers are everywhere (mentioning this
due to the recent threads on this forum).
Should I be concerned about this?
Mfg environment is no-clean solder, with spot cleaning done mainly for
things like additions of flux during hand-soldering operations.
Electronics built to class 2 IPC, no conformal coating. Nothing for
military, automotive or aerospace use. Primarily network infrastructure
products, so usually installed in controlled environments. Some
externally mounted devices are produced.
Instructions are to remove everything from bench, and to spray the
cleanser on the cloth and wipe down bench, keyboards, etc, with the
cloth. Theoretically products should not be in the path of spray, but
there could be secondary transfer from surfaces and hands.
Your feedback is much appreciated.
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