Patent ID: 8533924

Claim:
A process for producing a pressure vessel comprising an enveloping body that occupies an arch shape in its predetermined installation position, the enveloping body having a plurality of pillow-shaped portions connected to one another by stamped transitions at an inner diameter area of the enveloping body, the process comprising: placing the enveloping body for the predetermined installation position with its inner diameter area one-sidedly on a die, the die having a raised wedge-shaped profile, wherein a designated outer diameter area of the enveloping body contacts a supporting surface; filling the enveloping body with a pressure medium so that the enveloping body is tensioned on the die, and plastically deformed in the area of the wedge-shaped profile to thereby produce the stamped transitions that define the plurality of pillow-shaped portions, wherein a pressure gas is distinct from a test gas surrounding the pressure vessel, the process further comprising: examining the test gas for fractions of pressure gas to determine a tightness of the pressure vessel.