Just put the arrestor in a section of the duct that is designed to be able to be removed and replaced.
From: Stuart, Ralph <Ralph.Stuart**At_Symbol_Here**KEENE.EDU>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Sent: Mon, Jun 29, 2015 1:06 pm
Subject: Re: [DCHAS-L] Vented flammables cabinets
I think that it's worth mentioning that I've had experience with properly vented
flammable cabinets that the flame arrestors corroded and gummed up within about
5 years of installation and significantly reduced air flow through the hood.. The
screens were welded into place, so replacing them was not an option.
Ralph Stuart, CIH, CCHO
Chemical Hygiene Officer
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