Does Air Liquide fall under the category of liquefied gases as referred to in the regulations?
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This post was last edited by Loulan Meng on 2018-11-20 at 17:23. Does liquid air fall under the category of liquefied gases as mentioned in the regulations? 1. Recently, I encountered an issue regarding the classification of containers used in air separation units. It was mentioned that these containers contain liquid oxygen, which is a liquefied gas; therefore, they should be classified under Group 1 of media, with containers of this type being at least Category II. I looked it up online and found the following: “Gases are in a gaseous state at normal temperature and pressure; that’s why we commonly call them gases.” Gases are generally classified into: 1. Inert gases ； 2. High-pressure liquefied gases ； 3. Low-pressure liquefied gases ； 4. Four categories, including dissolved and adsorbed gases. Permanent gases are those with a critical temperature of minus 50 degrees Celsius (the standard before 2014 was minus 10 degrees Celsius), such as oxygen, nitrogen, argon, hydrogen, etc. High-pressure liquefied gases are those with a critical temperature between minus 50 degrees and 65 degrees Celsius; common examples include carbon dioxide, ethane, and ethylene. Low-pressure liquefied gases are those with a critical temperature above 65 degrees Celsius; a common example is butane (the fuel used in disposable lighters). Liquefied gases referred to here do not include liquid air; based on this, they should be classified under the second group of substances, with container category I. 2. Check the “Catalog of Hazardous Chemicals”; in section 2.2, item 22004 refers to air (liquefied), and it seems that liquid air also falls under the category of “liquefied gases”. So I would like to ask Haiyou: do liquid nitrogen, liquid air, liquid oxygen, etc. fall under the category of \"liquefied gases\"?
This post was last edited by jizhanwei22 on 2018-11-20 at 17:51. 1. Air Liquide, which refers to liquefied air, contains liquefied oxygen, liquefied nitrogen, etc., and falls under the category of liquefied gases mentioned in the regulations on fixed substances. 2. Liquefied air should belong to Group 1 of media as specified by the Solid State Regulations.
Liquefied gases in the pressure regulations should be considered as Group 1 media
You are right; liquefied gases should belong to the first group of media.
Liquefied air is air in a liquefied state, and it falls under liquefied gases as defined by regulatory standards. And it belongs to the first group of media. Source see 3#:)
This post was last edited by wangzhenzhangjg on 2018-12-4 at 15:59. Liquid air should be a liquefied gas. Air Liquide’s first group of media.
I think it belongs to the first group of media. Consider only according to the fixed capacity regulations.