Would certainly appreciate any further
info on the lead studies.
Regards, Doug
----------
> From: Bev Christian <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: [TECHNET] Call for Data on Airborne Lead Concentrations
fromSolderingOperations
> Date: Wednesday, October 15, 1997 11:18 AM
>
> My environmental engineer tells me that the listing for lead dust given
> by the American Conference of Governmental and Industrial Hygienists,
> usually referred to by their acronym, ACGIH, is 0.15 milligrams per
> cubic meter for the Time Waited Average (TWA). The listings of the
> ACGIH are recommendations from a body of experts only. However, their
> values are often used in the laws of various states, provinces,
> countries, etc. The particular value above is the limit set by the
> government of the province of Ontario, Canada.
>
> In voluntary blood lead testing there has never been a case reported in
> our plant, at least within the 15 years that the senior plant nurse has
> been here, where the levels were anywhere near the limit. The main
> concern is for the facilities people and wave solder machine operators
> who change out the solder pots. Airborne lead oxide dust is much more
> of a concern than lead metal itself.
>
> Some lead trivia:
> ~1% lead inhaled is kept by the body
> ~10% of what is swallowed is kept
> 90-95% goes to the bones
> ~50% stays 2-3 years
> a normal person has <0.4 ppm in the body
>
> I have sent copies of this to the two people mentioned in the requesting
> e-mail.
>
> Bev Christian, PhD
> Manager, Materials Engineering Lab
> Nortel
> 613-967-5407
> FAX 613-967-5237
>
> >----------
> >From: Christopher Rhodes[SMTP:[log in to unmask]]
> >Sent: Tuesday, October 14, 1997 10:32 AM
> >To: [log in to unmask]
> >Subject: [TECHNET] Call for Data on Airborne Lead Concentrations
from
> >Soldering Operations
> >
> >The Lead Industries Association (LIA) is planning to revise their
brochure
> >entitled Safety in Soldering. This brochure contains two tables with
data on
> >airborne lead concentrations from soldering operations. However, the
data in
> >these tables is twenty (20) years old.
> >
> >As part of this revision, they have asked IPC to solicit our members
for any
> >more recent data on airborne lead concentrations from soldering. If
you have
> >any such data or related information, please forward it to Jeff Miller
at LIA
> >(ph 212/578-4750; fax 212/684-7714; email [log in to unmask]) and if
> >possible copy Holly Evans at IPC (ph 202/638-6219; fax 202/638-0145;
email
> >[log in to unmask]).
> >
> >If you have questions about the brochure, please contact Jeff Miller
> >directly.
> >
> >Christopher Rhodes
> >Director of Public Policy
> >IPC
> >[log in to unmask]
> >847/509-9700 x306
> >fax 509-9798
> >
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