You might look at the CGA guidelines:

http://archive.org/stream/gov.law.cga.p-1.1965/cga.p-1.1965_djvu.txt

Specifically:

3.3.5 

Storage rooms should be dry, cool and well ventilated. Where practical, storage rooms should be fire-resistant. 
Storage in subsurface locations should be avoided. Cylinders should not be stored at temperatures above 
125 F, nor near radiators or other sources of heat. 

3.3.10 

Cylinders should be protected against tampering by unauthorized individuals.. 

You might also find the CDC compressed gas checklist of use:

http://www.cdc.gov/niosh/docs/2004-101/chklists/r1n29c~1.htm

Specifically number 6 (which is based on the CGA recommendations above:

Are storage rooms for cylinders dry, cool, and well- ventilated? [CGA 3.3.5]

Note: The storage rooms should be fire resistant and the storage should not be in subsurface locations. Cylinders should be stored in secure areas at temperatures below 125=BAF, away from radiators or other sources of heat.

On Fri, Dec 14, 2012 at 1:57 AM, Christian Hoydic <wholefoodspecialist**At_Symbol_Here**gmail.com> wrote:

Well what I have found is, people like to tinker with the safety measures at hand. And especially with full tanks of gas, when you get someone that accidentally or intentionally tampers with the restraints in play, you are still held liable for all damages that cylinder causes, including personal injury. Though there is no WRITTEN regulations against them being in the used hallway of high traffic of people, it is an unspoken rule that, as Murphy's Law would say, if it can go wrong, it will. So, what I would strongly suggest to you is, if you haven't had an accident yet, don't tempt fate. I would find a different storage area.. Even if it is in a lab. At least there, there will be proctors and professionals around so that they can watch the cylinders that are stored there so that they are not tampered with. Because when they are placed in a hallway, can you have a security guard there to watch them when people are walking around all the time? It isn't feasible as a viable solution. I hope this gives you the other side to the situation, and hopefully, will give you some strong suggestions to maybe find a new spot for gas storage.

On Thu, Dec 13, 2012 at 12:31 PM, Ringen, Sonja G. <sonja.ringen**At_Symbol_Here**nist.gov> wrote:

Other than best practices, I am having a difficult time finding a specific reference in any standard or regulation that would specifically prohibit storage of nitrogen and/or carbon dioxide compressed gas cylinders in hallways. We've looked at fire code, building code, OSHA regulations, ANSI, and Compressed Gas Association standards. Many universities have their own rules prohibiting it (best practice), and I'm wondering if it is related to security of the cylinders (to prohibit tampering with the cylinder).

Other than fire code prohibiting obstructions for egress, I am having trouble finding a compelling regulatory requirement that would satisfy our researchers. The cylinders currently in the halls are securely fastened to the wall and they have signage.

Any suggestions?

Sonja

Sonja Ringen

Safety Specialist

Boulder Safety, Health and Environment

National Institute of Standards and Technology

325 Broadway, MC 153.02

Boulder, CO 80305

Work: 303-497-7389

Mobile: 303-961-9251