What a great question! We̵ 7;ve been having very similar issues, so any feedback anyone could provide would be GREATLY appreciated!
Katherine C. House, CCHO
Laboratory Coordinator< /p>
Chemical Hygiene Officer
5000 International Drive
Durham, NC 27712
919.620.3044 (office) p>
919.815.2024 (mobile) p>
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Wawzyniecki Jr, Stefan Sent: Friday, October 30, 20 09 9:55 AM
Subject: [DCHAS-L] Roof top exhaust fan maintenance Policy
In general, maintenance staff working on rooftop fume hood exhaust equipment have indicated their concern s about being on a roof, and possibly being exposed to whatever is being vented.
In a more specific laboratory situation, involving MOCVD (metal organic chemical vapor deposition), we ha ve a lock-out tag-out policy, due to the severity of the toxic gases involved. span>
1.  ; Does anyone else have MOCVD labs, and to what ext ent are controls in place for protection of workers on roof tops?
2.  ; Does anyone else employ a LOTO policy?
3.  ; Are roof tops key-accessible only?< /p>
Thanks for the feedback.
-Stefan Wawzyniecki, CIH, CHMM
University of Connecticu t
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