In the classification of pressure pipelines, the compressed air pipeline is DN80, the working pressure is 1.0MPa, and the design pressure is 1.76MPa. According to the new regulations, is it a GC2 grade pressure pipeline? Is compressed air a corrosive gas?
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In the classification of pressure pipelines, the compressed air pipeline is DN80, the working pressure is 1.0MPa, and the design pressure is 1.76MPa. According to the new regulations, is it a GC2 grade pressure pipeline? Is compressed air a corrosive gas?
It is above DN50 and the design pressure is above 1.0MPa, so it is GC2. Compressed air is not a corrosive gas.
The design pressure is higher than 1.0MPa, but the medium is a low-hazardous gas and does not meet any of the conditions of GC1 level (such as high toxicity, high fire risk, P≥4.0MPa, etc.), so it should be classified as GC2 level. In addition, the main components of compressed air are nitrogen and oxygen. Although it may promote metal oxidation under certain conditions (such as causing rust in a humid environment), it itself is not directly corrosive. according to * * According to standards and classification of hazardous chemicals, corrosive gases refer to gases that can directly chemically corrode metal or human tissue, such as hydrogen chloride, hydrogen sulfide, ammonia, etc. Compressed air is not included in this category.
According to section 1.4 of the new pipe regulations, this compressed air pipeline is classified as out-of-class