Thanks Joyce. We have such batch systems, and we'll be trying to get them back on line.
-Joe
________________________________________
From: TechNet [[log in to unmask]] On Behalf Of Joyce Koo [[log in to unmask]]
Sent: Sunday, September 11, 2011 7:22 PM
To: [log in to unmask]
Subject: Re: [TN] Cleaning Up After The Flood
There are dishwasher type of semi aquas cleaner for electronics. It high jetting and drying may help. But 1st, a good brush with DI may need to get rid majority of mud. Good luck. My 1 cent.
--------------------------
Sent using BlackBerry
----- Original Message -----
From: Bob Landman [mailto:[log in to unmask]]
Sent: Sunday, September 11, 2011 05:08 PM
To: [log in to unmask] <[log in to unmask]>
Subject: Re: [TN] Cleaning Up After The Flood
Joe,
That's an incredibly sad story. My sincere condolences.
Hmm... perhaps Dove for dishes which is what is used to clean wildlife that's been caught in oil spills.
We use a diliute solution of trisodium phosphate for precleaning boards we are electrolessly plating with nickel - that leaves no soapy residue and removes oil films.
Compressed air or nitrogen is a good idea to get rid of excess water but be careful of induced static electricity in the air stream.
See. for example http://www.iprocessmart.com/Exair/static_eliminators.htm
Be very careful for your health as that water isn't just muddy river water, it likely contains coliform bacteria from failed waste treatment plants that dumped into the river.
Bob
_____
From: Kane, Joseph E (US SSA) [mailto:[log in to unmask]]
To: [log in to unmask]
Sent: Sun, 11 Sep 2011 15:14:39 -0400
Subject: [TN] Cleaning Up After The Flood
Tropical Storm Lee dumped about 9 inches of rain on Binghamton, and we got the second hundred-year flood in five years. But this one was lots worse than in 2006. Cities and towns were inundated, and a lot of people have lost their homes here. And this time the Susquehanna River overtopped the levee and flooded our plant.
The water has receded and we were able to send people inside yesterday to assess damage. A lot of our product is wet and muddy, from components on reels on up to finished assemblies. And essentially all of our assembly and test equipment has been at least partly submerged.
Not sure if we can get some of our cleaning equipment restored soon, including aqueous batch dishwashers and an in-line aqueous cleaner. If we have to clean product in buckets or tubs, we're thinking about these steps:
1. Soapy/alkaline water solution, scrub as necessary
2. At least two rinses, last one DI
3. Blow off with compressed air (or nitrogen if available)
4. Bake
5. Ionic contamination testing on samples
Our conformal coat is mostly urethane. Some assemblies have unsealed connectors, switches, and pots. Some motherboard/front panel assemblies have lots of wires.
Anybody have any experience cleaning river mud from electronics?
Joe Kane
BAE Systems
Johnson City, NY
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