Where does the 1 kilogram for pressure vessels come from? !
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This post was last edited by juniger on 2017-10-12 at 13:45. According to GB 150, pressures greater than 0.1 MPa classify the vessel as a pressure vessel. Where does this 0.1 MPa come from? When establishing standards, how is this design point determined? Is it based on atmospheric pressure, 1ATM? Or based on the harm to the human body? !
A pressure of 1 kilogram gauge pressure corresponds to a reading of 0.1 MPa on your pressure gauge
The converted value for 1 standard atmosphere is 1.033 kgf per square centimeter
The design pressure of a pressure vessel is 1 kilogram, which actually refers to 2 kilograms (absolute pressure).
0.1 MPa is atmospheric pressure
It seems the original poster is asking why 1 kilogram was chosen as the standard, rather than 2 kilograms or 3 kilograms. However, to answer this question, it would likely be necessary to consult the experts who drafted it.
Yes, indeed. Chinese experts might not know either!
I think it’s based on the energy after it fails
A pressure vessel should be defined as: a fixed or mobile vessel in which the range is specified as having a maximum working pressure of 0.1 MPa (gauge pressure) or more for gases and liquefied gases, and a maximum working temperature of equal to or higher than the standard boiling point for liquids; such vessels also have a volume of 30 L or more and an inner diameter (for non-circular cross-sections, this refers to the largest geometric dimension of the cross-sectional boundary) of 150 mm or more； Cylinders for gases, liquefied gases, and liquids with a standard boiling point of 0°C or lower, whose nominal working pressure is 0.2 MPa (gauge pressure) or higher, and whose product of pressure and volume is 1.0 MPa·L or higher ； Oxygen chamber. Instead of defining pressure vessels solely based on a working pressure greater than 0.1 MPa, following the same principle used for classifying pressure pipelines.