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December 2002

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Subject:
Re: ESD-Protective Carts
From:
"Dan R. Johnson" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 3 Dec 2002 12:12:21 -0800
Content-Type:
text/plain
Parts/Attachments:
text/plain (22 lines) 
Joseph,
This method limits mobility but is almost fool proof. I first saw it in a
wafer dicing facility in LosGatos back in the eighties. Bare copper wire or
pipe is strung along the tops of your shelving and connected to ground. A
shower curtain ring attached by a chain to the cart is hooked to the wire.
If there is still a worry add a second chain ring to maintain ground when
moving from one wire/pipe to another. In another facility we strung the wire
along the base of the shelving units where our hard drives/memory modules
were stored so model numbers could be verified when kitting/inventorying.
Dan

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