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I would also say that there is a risk of damage to your employees subjected
to these electromagnetic fields as well.  I previously worked for Company
that exposed employees to these fields and remember quiet discussions
regarding the potential risk factors to the staff.  Does anyone out there
know more?

> -----Original Message-----
> From: Hugh Smith [SMTP:[log in to unmask]]
> Sent: Monday, February 12, 2001 11:21 AM
> To:   [log in to unmask]
> Subject:      Re: Has anyone performed an inspection in your data storage
> areas for magnetic fields?
>
> I recently had a discussion with Vitatech Engineering, a specialist in
> magnetic shielding. They said there is a big upswing in shielding of
> computer rooms, and storage rooms due to electromagnetic fields which are
> created in office building and warehouses by 1) Electric service entry
> into
> the building 2) Buried power cables beneath the slab of the building, 3)
> Switch gear 4) Meter boxes, 5)the utility vault 6) Switch gear and
> disconnect boxes, 7) Transformers 8) Electrical Rooms
>
> They suggested that some data could be affected by fields as low as 10
> milligauss. I am going to do some research into what constitutes an
> unacceptable level of magnetic field and then test for it in some sites we
> are involved with. We recently had a discussion about CD-ROM being much
> more
> fragile than we originally thought. Maybe it is more the abuse they see in
> a
> typical building environment with electrical and magnetic fields abounding
> in the office environment.
>
> Has anyone looked at this in your facility? Has anyone questioned their IT
> people about the limits of the media they use? Maybe they are selecting
> low
> quality media and this will lead to a problem.
>
> I ordered a device which will measure the "Triple Axis Field" of Magnetic
> Interference. (It cost $249.00 ) Now I can do a walk through and see if
> these fields exist.
>
> But in talking to the shielding people, I found there is a the magnetic
> field equivalent of the "Coalminer's Canary" for checking the safety of
> your
> media.  Take a color video display terminal into the area in question.
> Select a full screen display and rotate the display 360 degrees. If the
> screen appears to jitter or distort then magnetic fields in excess of 10
> mG
> exist.
>
> Word of Caution: Do not do this when others are watching!! Spinning slowly
> while looking at a video display monitor with no picture will surely start
> rumors. I remember how silly comedian Chris Farley looked in one of his
> movies, when he was running through the woods with his cell phone trying
> to
> find a signal to make a call, eventually whacking into a tree limb. I have
> seen this recreated by normally sensible people in malls, Las Vegas
> Casinos
> (the guilty shall remain nameless to protect the silly) and office
> lobbies.
>
> Suggestion: Have one of the file clerks do magnetic interference test for
> you.
>
>
> --
> FIRELOCK Fireproof Modular Vaults
> Hugh Smith at (610) 756-4440
> Kutztown, Pennsylvania
> See our Web Site at WWW.FIRELOCK.COM
>
> List archives at http://lists.ufl.edu/archives/recmgmt-l.html
> Contact [log in to unmask] for assistance



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