Oh yes, explaining what you are doing to an auditor. Typically, you need to
have what you are doing documented in your ESD control plan.
This link includes: "On a similar note, I was once asked to show an engineer
in Florida why he should use static dissipative table covering instead of
old back issues of the Miami Herald. The Herald actually performed
marginally better than the special table covering - on that beautiful but
humid day."
Like concrete, paper is hydroscopic and readily absorbs moisture from the
air. It would be the water not the insulative paper that would provide a
path to ground.
Is this anyway to run a railroad? No.
Gene n
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ted Tontis
Sent: 2009-01-23 7:56 AM
To: [log in to unmask]
Subject: Re: [TN] ESD Flooring - bare concrete
Steve,
Check out this link
http://www.staticworx.com/articles/bare_concrete_anti-static_flooring.php .
From a quality stand point I wouldn't do it. At the least I would place a
dissipative epoxy coating on the floor in the areas you will be transferring
or handling material. It will also give his customers added insurance that
ESD is being addressed when or if he is audited.
Regards,
Ted
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Creswick
Sent: Friday, January 23, 2009 9:39 AM
To: [log in to unmask]
Subject: Re: [TN] ESD Flooring - bare concrete
Dewey,
I think I understand your response, but the question still remains - is a
bare [untreated with anything] concrete floor [without mats to trip over]
able to minimize charge build-up?
His parts are crude, and pretty macroscopic by our standards. His objective
is crude, and he needs it low cost, but reasonably safe for people and
product. I know if one were to do it the way we normally would, I would
coat the floor, or put down ESD tiles and call it quits. He is on less than
a shoestring budget, trying to make do as best as he can.
The ESD people want to sell him mats and treatments that he can not afford.
Hence the question
Steve
-----Original Message-----
From: Whittaker, Dewey (EHCOE) [mailto:[log in to unmask]]
Sent: Friday, January 23, 2009 10:26 AM
To: TechNet E-Mail Forum; Steven Creswick
Subject: RE: [TN] ESD Flooring - bare concrete
Obvious is a treated concrete floor with an ESD safe coating. The
downside is maintenance and cleaning.
Large ESD mats may be better with dedicated ESD safe work areas.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steven Creswick
Sent: Friday, January 23, 2009 8:13 AM
To: [log in to unmask]
Subject: Re: [TN] ESD Flooring - bare concrete
Brian - Joyce,
This is HEAVY equipment [ie - dirty, filthy, grimy]. I have very little
concern about dirt and dust - just ESD suitability.
Any comments on suitability of the bare concrete floor to mitigate
charge
build-up and/or transfer?
Steve
-----Original Message-----
From: Brian Ellis [mailto:[log in to unmask]]
Sent: Friday, January 23, 2009 6:39 AM
To: TechNet E-Mail Forum; Steven Creswick
Subject: Re: [TN] ESD Flooring - bare concrete
Dust?
Brian
Steven Creswick wrote:
> Techies,
>
>
>
> My first Friday, pseudo-technical question - I have an acquaintance
that
is
> repairing pretty crude PWB assemblies used in the trucking industry
and
> needs to re-locate to gain more room. He certainly does not require
> clean-room conditions.
>
>
>
> My thought was that a bare concrete floor - free of oils and greases,
epoxy
> coatings, etc. - would work out ok for flooring. If he had carts, he
could
> attach small brass chains, etc.
>
>
>
> Was also thinking that the floor would give up moisture in the Winter
and
> absorb it during the Summer and thereby help buffer humidity swings.
>
>
>
> He still would require ESD work-stations.
>
>
>
> What say the more ESD gurus?
>
>
> Steve
>
>
>
>
>
>
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