How are pressure vessels defined?
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It is known that the operating pressure of the vertical vessel is 0.05 Mpa, while the design pressure is 0.35 MPa. The medium used is methanol; the operating temperature is 40°C, and the design temperature is 100°C. According to GB150 standards, since the design pressure is greater than 0.1 Mpa, this vessel qualifies as a pressure vessel； According to the classification criteria, if the working pressure is less than 0.1 MPa, this vessel does not qualify as a pressure vessel. How to distinguish this? ? ?
Defined according to the maximum operating pressure
The solubility rules determine the scope of regulation for special equipment. GB/T150 sets out the technical requirements for the design, manufacturing, inspection, and acceptance of pressure vessels; vessels with a design pressure greater than 0.1 Mpa can be designed, manufactured, inspected, and accepted in accordance with GB/T150, while those with a working pressure less than 0.1 Mpa are not subject to the regulations applicable to special equipment. Is it correct to understand it this way?
Regulatory containers are classified by operating pressure, and categorized according to design pressure； It does not fall under pressure vessels; no matter how high the design pressure, it is not classified as such!
I learned it; so there’s this expression after all
Regulatory oversight is based on operating pressure, while manufacturing requirements are determined by design pressure
In fact, the original poster was asking whether it falls within a certain category or not – specifically, whether it is a pressure vessel – and this is determined according to the definition of \"pressure vessel\" in the licensing regulations. Whether it falls under the jurisdiction of 150 is determined by its scope of application; whether it belongs to a certain category and is subject to the regulations on capacity is determined by the scope defined in those regulations.
1. Pressure vessels can be classified as either in a broad sense or in a narrow sense; what you mentioned, namely design and manufacturing in accordance with GB50 standards, does not fall under regulatory oversight