What is the definition of a pressure vessel?
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I would like to ask everyone: Does a steel welded cylindrical benzene storage tank with a heat exchange coil, with a capacity of 3000 m3, fall under the category of \"pressure vessels\" within \"special equipment\"?
Atmospheric pressure storage tank, with internal floating disk, without nitrogen seal
It belongs to that category; the criteria for definition are volume and pressure, as well as their product.
Classified according to pressure regulations and GB150, based on pressure, volume, and their product
Complies with 1.5(6) of TSG21-2016, and is not subject to the regulations of the Large Capacity Regulations
This should be classified in accordance with the Code for Large Pressure Vessels TSG 21-2016 and the Standard for Pressure Vessels GB150-2011.
The relevant regulations specify that Di must be at least 150, V must be at least 30 liters, the operating pressure must be at least 0.1 MPa, and the operating temperature must be above the standard boiling point of the medium. All four points must be present at the same time. Check whether your coil meets the requirements.
The inner diameter of your coil will not exceed 150, so it is not governed by the large-size tolerances.
What you mentioned does not fall under pressure vessels.