Pressure vessels are any structures that contain fluids at pressures different from the ambient and can include soda bottles, car tires, and airplane cabins. The American Society of Mechanical Engineers (ASME) defines pressure vessels as having a pressure higher than 15 psi and possessing certain dimensional requirements.
Section VIII of the ASME Boiler and Pressure Vessel Code (BPVC) and the Pressure Equipment Directive (PED) are the codes regulating the design, fabrication, testing, and maintenance of pressure vessels in the United States and the European Union, respectively.
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