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Oxygen Cylinder Safety


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#1 fr3nch

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Posted 01 June 2010 - 12:14 PM

What I would like to know is if its dangerous to leave the valve on a compressed Oxygen cylinder open when not using it. The cylinder is fitted with a regulator and a very small diameter line at 500 psi. The cylinder is properly restrained and is in a location in compliance with safety regulations.

Heres the full story if you are interested:

I do lab work for a research scientists here in colorado. I just started using some new equipment that uses a compressed Oxygen cylinder. After running my first full days worth of experiments I cleaned up the lab, but forgot to turn the valve on the O2 tank off. The tank is configured as mentioned earlier. The researcher who is in charge of the lab found that I left the O2 valve open and gave me a very aggressive speech on how that is a major safety violation. I have never had any compressed gas safety training, and the researcher only mentioned to turn off the O2 very briefly. I did a google search and found nothing except a government report on fires starting from friction caused by small leaks, but none of the safety precautions they listed to avoid the issue included turning the cylinder off when not in use. I've had the feeling that the researcher doesn't like me so I want to know if this is actually a safety issue, or if he is just finding things in my work to yell at me for. If I'm working with compressed non-flamable gas, should he be providing me with training?

#2 bob1

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Posted 01 June 2010 - 05:09 PM

Whether it is a safety violation or not is up to the institute where you work. Ask the health and safety people about it.

In many places gas cylinders are left with the main valve open all the time (e.g. CO2 cylinders on cell culture incubators, methane for home bottled use), without any risk other than lines blowing off the regulator occasionally. I don't use O2 cylinders so I don't know if there are specific risks with them (e.g. leaks causing fires). Still, if someone is giving you grief over it, just turn it off, it'll be easier in the long run.




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