I can't see it being an issue. My suppliers, whenever queried about a
resolution to a problem, milestones on a gant chart or progress in the
recovery plan, always say it's right on track.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Randy Bock Sr.
Sent: Tuesday, February 08, 2005 12:33 PM
To: [log in to unmask]
Subject: Re: [TN] limits for plant vibration


These readings are on open ground.   I would think you would see lower
readings in a building as the footings and floor would absorb or dampen
the vibration.  Vibration isolators on the machines will also help reduce
vibration waves.  Works for surface plates, coordinate measuring machines
and optical Compartor.


Randy Bock Sr.
Quality Manager
Pitney Bowes
AddressRight Printers
(email)  [log in to unmask]
Newtown Building 2
203 270-4931  Ext
    8-426-4931  In
203 270-4982 Fax




Roger Mack <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
02/08/2005 01:18 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Roger Mack <[log in to unmask]>


To
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cc

Subject
[TN] limits for plant vibration






We are considering sites for a new plant. One of the candidates is about
100m from a railway line. It is the mainline across the country and has
very
high traffic.  We have recieved a vibration study of the property but are
not sure how much impact this will have on production processes. Is there
any level of vibration that is known to affect smt processes ,through
hole,
wave soldering, microscope use?

peak particle velocities were measured at 0.045 in/sec , and   0.005in/sec
background vibration levels.

I have a table that indicates >0.01 as slightly perceptible to humans ,
>0.025 distinctly perceptible to humans.

Any experiences or input would be appreciated, we don't usually have to
worry about these things on the prairies.







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