From:
Margaret Rakas <mrakas**At_Symbol_Here**SMITH.EDU>
Subject:
[DCHAS-L] Fume hood shutdown = recertification?
Date:
Jan 9, 2024 20:45 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<CAAszpkx3wcGO5VcFHFHQBvh6_y9YxQafsXoGKr-k9mikFakKEg**At_Symbol_Here**mail.gmail.com>
In-Reply-To:
Good afternoon,
If a fume hood is 'turned off' for an extended period of time (say, 6-12 weeks) but was certified as meeting manufacturer specs for face velocity by a testing company, is it best practice/optional or required to have it recertified when it becomes operational again, assuming there are no changes (such as a fan replacement) and is within 12 months of certification? This is a continuous volume HVAC system, not integrated into a building management system...
I realize there may be concerns about backdraft, maintaining appropriate ACH in the space, etc, which we'll have to investigate but I wanted to check specifically whether institutions would recertify. (And I agree face velocity is just one measure of ability to capture fumes/vapors/mists).
Many thanks,
Margaret
-- Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
Smith College
413-585-3877 (p)
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