Date: Tue, 25 Jan 2011 09:53:44 -0500
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Norwood, Brad" <Brad.Norwood**At_Symbol_Here**ARISTALABS.COM>
Subject: Do surgical masks = 'respirators'?
As an analytical laboratory, we operate under the Laboratory Standard
1910.1450 of the OSHA regulations. We have excellent engineering cont
rols, and have done monitoring for the the atmosphere contaminants that wou
ld be of concern. We don’t meet the
OSHA threshold for any of those.
That being said, we sometimes have to grind samples in knife mills, an
d this can generate some dust (though still well below the threshold).
; Per 1910.134 Appendix D (http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STAND
we conduct and document training to ensure that our employees have a firm b
asis upon which to choose a dust mask appropriate to their task and comfort
Now, my toxicology group wants to order surgical masks, and since 1910
.134 defines a “respirator” as:
Filtering facepiece (dust mask) means a negative pressur
e particulate respirator with a filter as an integral part of the facepiece
or with the entire facepiece composed of the filtering medium (emph
In light of the above definition, I am forced to ask: is a surgi
cal mask considered a ‘respirator’? Do I now need to docu
ment a) that there is no condition which requires use of a respirato
r/surgical mask/form of protection in the toxicology section
and b) that if not, all of the toxicologists are also trained in accordance
with Appendix D to 1910.134?
Dr. Bradley K. Norwood
1941 Reymet Road
Richmond, VA 23237
(804) 271-5572 ext. 307
(804) 641-4641 (cell)
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