From: Yamaira Gonzalez <gonzalyi**At_Symbol_Here**YAHOO.COM>
Subject: [DCHAS-L] Guidelines for Changing Compressed Cylinders NFPA Health/Flammable Rating of 3 or 4
Date: Thu, 21 Apr 2016 11:13:21 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
In-Reply-To <00d301d189da$e21cf740$a656e5c0$**At_Symbol_Here**>

Good morning!

I've been asked to collect information on how many institutions have a policy or guideline in place requiring any or all of the compressed cylinders with NFPA health and/or flammability rating 3 or 4 to be changed at a certain time of the day and do you require/recommend 2 or 3 for conducting the process?  
-    For example, do you require H2, methane, propane or CO cylinders to be changed before 7:30am?  How about for other chemicals like ammonia? Or silane, ...?

Thank you in advance for your response,

Yamaira I. Gonzalez, PhD
Laboratory Safety Coordinator
Chemical and Biomolecular Engineering Dept
University of Delaware
Newark, DE 19716
(302) 388-9368 (c)=E2=80=8B=E2=80=8B
(302) 831-1048 (f)

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