Date: Wed, 21 Jun 2006 21:15:29 -0400
Reply-To: Peter Zavon <pzavon**At_Symbol_Here**ROCHESTER.RR.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Peter Zavon <pzavon**At_Symbol_Here**ROCHESTER.RR.COM>
Subject: Re: Supplied-air respirator question
Comments: cc: Doctormfox**At_Symbol_Here**AOL.COM
In-Reply-To: <4fe.102d002.31cb03e0**At_Symbol_Here**>
Actually a loose-fitting hood can be quite acceptable in some circumstances
and may well BE under positive pressure.  This is especially true for a
supplied-air system, where you are not carrying a limited air supply in a
cylinder on your back.

Peter Zavon, CIH
Penfield, NY


-----Original Message-----
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU]On Behalf Of
Sent: Wednesday, June 21, 2006 4:20 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: Re: [DCHAS-L] Supplied-air respirator question

Ff 29CFR1910.134 kicks in, then it's my understanding that all the
requirements of that section apply.  I don't believe you can wear a loose
fitting hood.
I understand you need a positive pressure respirator.  No leakage.  Also,
"Buddy System" kicks in.  The Buddy also has to be equipped and trained to
execute a rescue, if needed.  Whenever there is a potential for an IDLH
atmosphere, or if the hazard is unknown, 29CFR1910.134 applies, to my

Michael Fox, Ph.D., Founder
Chemical Accident Reconstruction Services, Inc.
9121 E. Tanque Verde Road #105
Tucson, Arizona 85749

Phone: 800-MIKE-FOX (645-3369)
Fax: 520-749-0861
email: mikefox**At_Symbol_Here**

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