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<DIV><SPAN class=423021203-18012005>Hummmm-- an old CPAP machine and a long
circuit hose!!!!</SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On Behalf
Of </B>John Ferrell<BR><B>Sent:</B> Monday, January 17, 2005 5:45
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: Speaking of
painting...Respirator tips<BR><BR></FONT></DIV>
<DIV>Remote breathing air devices are not that difficult to construct.</DIV>
<DIV>Use a NEW long vacuum cleaner hose plumbed to a respirator mask that
leads into your shop (use a little common sense here...), pressurize the shop
with window fans on the far side of the building and paint outside. Leaks in
the mask & plumbing are OK because everything is going out.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Explaining why you are doing it that way to family & friends is a lot
harder!</DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=ehaury@houston.rr.com href="mailto:ehaury@houston.rr.com">Earl
Haury</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 17, 2005 7:12
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Speaking of
painting...Respirator tips</DIV>
<DIV><BR></DIV>
<DIV>For those not wishing to take risks - do a web search for the Axis
Hobbyair forced air systems, available from several sources. They're
affordable, comfortable, and durable.</DIV>
<DIV> </DIV>
<DIV>Earl</DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=MKMSG@aol.com href="mailto:MKMSG@aol.com">MKMSG@aol.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 17, 2005 5:34
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Speaking of
painting...Respirator tips</DIV>
<DIV><BR></DIV><FONT id=role_document face=Arial color=#000000>
<DIV>The following is an extract of an OSHA study done at a Denver
automotive paint shop where urethane containing polyisocyanates is sprayed
daily. The study concluded the workers were protected at an adequate
level (they wore protective suits and were using a forced air breathing
system). I'm not advocating not using automotive polyurethanes, but
if you're going to use them, be aware of the dangers and take the
precautions recommended by the paint manufacturers. I used to spray Imron
with great results, but am now experimenting with other paints to
eliminate the hazard.</DIV>
<DIV> </DIV>
<DIV>Mike Moritko</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>OSHA Report Extract: </DIV>
<DIV> </DIV>
<DIV>Probably the most debilitating health effects from workplace exposure
to diisocyanates are respiratory and dermal sensitization. Exposures can
lead to sensitization depending on the type of exposure, the exposure
concentration, the route of exposure, and individual susceptibility.
Dermal sensitization can result in such symptoms as rash, itching, hives,
and swelling of the extremities.<SUP>18,21</SUP> Respiratory sensitization
from exposure to diisocyanates results in the typical symptoms of asthma.
Estimates of the prevalence of diisocyanate-induced asthma in exposed
worker populations vary considerably; from 5% to 10% in diisocyanate
production facilities,<SUP>22,23</SUP> to 25% in polyurethane production
plants,<SUP>22,24</SUP> and 30% in polyurethane seatcover
operations.<SUP>25</SUP><BR><BR>A worker suspected of having
diisocyanate-induced sensitization will present with symptoms of
traditional acute airway obstruction; e.g., coughing, wheezing, shortness
of breath, tightness in the chest, nocturnal awakening,
etc.<SUP>18,20</SUP> Upon first exposure to diisocyanates, the worker may
develop an asthmatic reaction immediately or several hours after exposure,
after the first months of exposure, or after several years of
exposure.<SUP>18,20,23,26,27</SUP> some evidence exists which suggests
that the onset of sensitization occurs after a mean exposure interval of
two years.<SUP>28</SUP> After sensitization, any exposure, even to
concentrations below any occupational exposure limit or standard, can
produce an asthmatic response which may be life threatening. This
asthmatic reaction may occur minutes after exposure (immediate), several
hours after exposure (late), or a combination of both immediate and late
components after exposure (dual).<SUP>20,26</SUP> The late asthmatic
reaction is the most common occurring in approximately 40% of
diisocyanate-sensitized workers.<SUP>29</SUP> Recurrent nocturnal asthma
has been described in workers sensitized to TDI and MDI.<SUP>30,31</SUP>
An improvement in symptoms may be observed during periods away from the
work environment (weekends, vacations).<SUP>18,20,26</SUP><BR><BR>The
percentage of sensitized workers with persistent symptoms of asthma after
years of no exposure may be 50% or higher. Studies have shown that workers
with persistent asthma have a significantly longer duration of symptoms
prior to diagnosis, larger decrements in pulmonary function, and a severe
degree of nonspecific bronchial hyperactivity at diagnosis.<SUP>26</SUP>
These data suggest that prognosis is improved with early diagnosis of
diisocyanate-induced respiratory sensitization and early removal from
diisocyanate exposure. This emphasizes the need to minimize workplace
exposure concentrations, and for active medical surveillance of all
workers potentially exposed to
diisocyanates.<BR></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></FONT></BODY></HTML>