I certainly would not recommend any relaxation of Industrial hygiene
controls.
According to the US OSHA, the permissible exposure level for silver is 0.01
mg/m3
This is one-fifth the allowable level for Lead of 0.05 mg.m3
http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id
=9992
This tells me we may need to tighten controls rather than loosen.
__________________________________________
Dan Kallin Environmental & Safety Engineer
Bose Corporation Framingham, MA 01701
[log in to unmask]
508-766-7136 (phone)
508-766-7086 (fax)
__________________________________________
-----Original Message-----
From: Brian Ellis [mailto:[log in to unmask]]
Sent: Friday, April 23, 2004 2:08 AM
To: [log in to unmask]
Subject: Re: [LF] Reality check
This is pure and utter codswallop, a word which may be translated into
American as bulls**t. Firstly, "marginally" is relative because LF
contains 50% more tin than conventional and the price of tin is high,
compared with lead; work it out for yourself. Secondly, venting is, as
Joe says, to remove flux fumes (rosins do decompose into minute
quantities of toxic aldehydes). Thirdly, venting is a small capital cost
plus an even smaller consumable whereas solder is a pure consumable.
Without knowing the quantities and costs, it is impossible to equate
them, but it would be an extremely small consumer who would show a
saving as cited.
My advice is to avoid the company who can perpetrate such lies like the
plague, because all they are doing are demonstrating their incompetence.
Brian
Chuck Dolci wrote:
> Question: Is the following statement about lead-free solder not
> requiring venting, etc.
> true?
>
> "Tin-silver-copper alloys have been developed as substitutes. The costs
> of these
> replacement solders are only marginally higher than the lead solders but
> there could be
> savings at the manufacturing end because the new solders will not
> require the venting
> and management for worker and environmental protection which was
> formerly necessary with
> lead solder during production"
>
> Thanks
>
> --
> Charles F. Dolci
> Director - Business Continuity and EH&S Programs
> Sun Microsystems, Inc.
>
>
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