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Previous by Date: Subject: Re: Osmium tetroxide storage, use and disposal Date: Fri, 30 Oct 2009 13:30:40 -0400 Author: Russ Phifer |
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Date: Fri, 30 Oct 2009 10:47:35 -0700
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: Paul Sonnenfeld <p_sonnenfeld**At_Symbol_Here**HOTMAIL.COM>
Subject: Re: Roof top exhaust fan maintenance Policy
In-Reply-To: <684E8BFA09C42F43BA0A0D8772FD3BD85E797F87**At_Symbol_Here**CTTR-EXCH-03.cormetech.com>
Roof access is limited at our plant. When we lock the access to the
roof, we ensure that the spare key is in the Fire Department's lock-box
in the event that they need access to the roof, especially after hours.
I'll presume that you have a fall protection plan in place and that the aff
ected employees have been trained on that plan.
We lock out fans/roof exhausts unless the maintenance tech is trying to tro
uble-shoot faulty relays or motors.
I've seen PIDs employed to conduct real-time field screening by trained tec
hnicians prior to the maintence crew starting their work. At this p
lant our challenge is bisphenol-A andepichlorohydrin. Although the
PEL for the latter is 5.0 ppm, the TWA is 0.5 ppm. The maintenanc
e techs really dislike wearing APRs when working on fan motors due to the s
lightly obscured vision associated with the APR.
Paul Sonnenfeld,
CPEA
What a great question! We=92ve been having very similar issues, so any feedba ck anyone could provide would be GREATLY appreciated!
Cheers,
Katherine C. House, CCHO
Laboratory Co ordinator
Chemical Hygi ene Officer
Cormetech, Inc.
5000 Internat ional Drive
Durham, NC 27712
919.620.3044 (office)
919.815.2024 (mobile)
-----Original
Message-----
From: DCHAS-L Discussion List [mailto:D
CHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Wawzyniecki Jr, Stefan
Sen
t: Friday, October 30, 2009 9:55 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Roof top exhaust fan mainten
ance Policy
In general, m aintenance staff working on rooftop fume hood exhaust equipment have indica ted their concerns about being on a roof, and possibly being exposed to w hatever is being vented.
In a more speci fic laboratory situation, involving MOCVD (metal organic chemical vapor d eposition), we have a lock-out tag-out policy, due to the severity of t he toxic gases involved.
Questions:
1.< FONT face="Times New Roman" size=1> Does anyone else have MOCVD labs, and to what extent are control s in place for protection of workers on roof tops?
2.< FONT face="Times New Roman" size=1> Does anyone else employ a LOTO policy?
3.< FONT face="Times New Roman" size=1> Are roof tops key-accessible only?
Thanks for the feedback.
-Stefan Wawzyni ecki, CIH, CHMM
Univers ity of Connecticut
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