Date: Wed, 29 Aug 2007 14:45:11 -0500
Reply-To: Diane Amell <Diane.Amell**At_Symbol_Here**STATE.MN.US>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Diane Amell <Diane.Amell**At_Symbol_Here**STATE.MN.US>
Subject: Re: composite work
Comments: To: Debbie Decker
If she is spraying flammable liquids (which is normally the case in
composite layup and sprayup), she will then fall under 29 CFR 1910.107
Spray Finishing Using Flammable and Combustible Materials and 29 CFR
1910.94(c) Ventilation: Spray Finishing Operations, not to mention NFPA
33 and whatever the local fire marshal may require. She needs a booth
specially designed for spraying flammable materials.
I am sensitized to isocyanates because of a researcher who thought a
lab hood was acceptable for the same thing. 
If you want a quick read on some of the other standards that may apply
to such operations, we have a booklet on our Web site that we put out
several years ago during a special emphasis program covering
layup/sprayup. (We have a lot of shops of varying sizes here in
Minnesota.) It's based on an old NIOSH booklet that staff updated and
Minnesota-ized. It can be found at 
- Diane Amell, MNOSHA

>>> Debbie Decker  8/29/2007 11:18 AM >>>


As ever, please excuse the cross-postings.  I have a new researcher
whose topic of interest is composites.  She does lay-up and
of composites using various epoxies and resins.  She also tests
composites with various liquids with which the composites might come
contact - jet fuel, de-icing liquids, etc.

We are renovating lab space for her and she needs a place to "lay-up"
various composite materials and vacuum bag the pieces to cure.  She
plans to do work on a full-scale car bumper and an unmanned vehicle of
some sort.

Currently, they work with small pieces in a (very small) fume hood and
wear respirators when working outside of the hood.  I'm
uncomfortable with folks routinely wearing respirators.  We can
out this hazard!

A traditional fume hood probably won't work.  Backdraft won't allow
access all the way around the work piece.  We use down draft tables in
anatomy teaching but will traditional down draft work in this
with such a large surface area?

Lemme know what ya'll think.

Debbie M. Decker, Campus Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA  95616
(530)754-7964/(530)752-4527 (FAX)
Co-Conspirator to Make the World A 
Better Place -- Visit and join the conspiracy

Previous post   |  Top of Page   |   Next post

The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.