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Previous by Date: Subject: Re: Pigeon Droppings and Perchloric Acid hood Date: Tue, 15 Feb 2005 15:49:53 -0800 Author: Dan Blunk |
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Perhaps I misunderstand what Phil means by "turn down the end of the exhaust stack" but that sounds to me like directing the exhaust stream towards the roof. That is just the opposite of the desired direction and is never advisable for stacks that may emit toxic materials. There are other ways to move the pigeons. Peter Zavon, CIH Penfield, NY PZAVON**At_Symbol_Here**Rochester.rr.com -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU]On Behalf Of Phil Anderson Sent: Tuesday, February 15, 2005 4:42 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: Re: [DCHAS-L] Pigeon Droppings and Perchloric Acid hood I think that you MUST discourage roosting, that is if the health of either the birds or the chemists is a concern. The easiest way to do this is to (1) turn down the end of the ehaust stack, and then (2) cover it with stainless steel cloth. Diong (1) or (2) alone will not do the trick. Phil -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of Debbie Decker Sent: Tuesday, February 15, 2005 3:52 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] Pigeon Droppings and Perchloric Acid hood Here's one for ya: It seems that pigeons, a bird of very little brain, have taken to roosting on the exhaust stack for the perchloric acid hood in the plant sciences building. They sometimes roost on other stacks but they seem to prefer the perchloric hood. This is a dedicated exhaust for the hood and when the hood is washed down, well, you can guess what ends up splattered into the fume "cupboard." Do I need to worry about potentially explosive pigeon guano? Should we have users washdown the hood before use as well as after? What about exposure to pigeon diseases? I don't think there's anything I can do to discourage roosting but I'm open to those ideas, too. Thanks for your help, Debbie Debbie M. Decker, Health and Safety Specialist Environmental Health and Safety University of California, Davis 1 Shields Ave. Davis, CA 95616 (530)754-7964/(530)752-4527 (FAX) dmdecker**At_Symbol_Here**ucdavis.edu Co-Conspirator to Make the World A Better Place -- Visit www.HeroicStories.com and join the conspiracy
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