----- Original Message -----
Sent: Wednesday, October 02, 2002 4:30
PM
Subject: Re: [TN] ESD ISSUE
Is
it as much a hazard as it is being portrayed? If the conditions are
hot enough that people are uncomfortable wearing smocks, they probably won't
be wearing long sleeve shirts that can dangle in what you're working
on. In fact, they are probably wearing the least they can get away
with at their place of employment - tank tops and shorts if allowed.
If they wear a static strap, and heel strap, are they really in that much
ESD risk? They might be at more risk for safety issues - solder
splashes, cuts, etc., than ESD issues.
Jim,
Higher humidity can
lower the ESD risk but have them wear the smocks to be safe.
Besides the humidity levels, it depends on what your operators are
wearing. Cotton, polyester or nylon have different
triboelectric properties so build up charge at different rates and
amounts. Think about how much static builds up on your polyester
socks versus your cotton socks in your clothes dryer at home.
--
Gregg
At 08:00 AM 10/2/2002, you wrote:
Good day Technetters:
I
need some opinions (this may be asking for trouble!). Located in
the
north east, temperature/humidity levels can change on a daily
basis. It has
been our policy that, during summer months when
the humidity is high, the
operators do not have to wear ESD smocks in
areas that are not air
conditioned. There is no hard fast rule
as to what the conditions shall be,
except that a decision is made
(by yours truly) that smocks are optional
when conditions are
uncomfortable. I'm trying to select a specific humidity
level
to use as a criteria for the mandatory wearing of smocks.
I
understand that not wearing ESD smocks poses a risk, but the risk
is
minimized during high humidity conditions. What do you think
of this
policy? Any recommendations on a humidity
level?
Thanks,
Jim Marsico
Senior Engineer
Production
Engineering
EDO Electronics Systems Group
[log in to unmask]
<mailto:[log in to unmask]>
631-595-5879
---------------------------------------------------------------------------------
Technet
Mail List provided as a free service by IPC using LISTSERV 1.8e
To
unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To
temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing
per day of all the posts: send e-mail to [log in to unmask]: SET Technet
Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit
IPC web site http://www.ipc.org/html/forum.htm for
additional
information, or contact Keach Sasamori at [log in to unmask]
or 847-509-9700
ext.5315
---------------------------------------------------------------------------------
---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to [log in to unmask] with following text in the
BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or
(re-start) delivery of Technet send e-mail to [log in to unmask]: SET
Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts:
send e-mail to [log in to unmask]: SET Technet Digest Search the archives of
previous posts at: http://listserv.ipc.org/archives Please visit IPC web
site http://www.ipc.org/html/forum.htm for additional information, or
contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To
unsubscribe, send a message to