| 摘要 |
PURPOSE: A method for fabricating a pressure vessel is provided to allow for a significant reductions in time needed to assemble a vessel of a given size and wall thickness. CONSTITUTION: A method for fabricating a pressure vessel comprises a first step of arranging two or more components(14,16,18,20) of the vessel in a generally vertical disposition, and a second step of welding the components together essentially simultaneously. The components are cylindrical, and the welding process performed in the second step is a gas-shielded narrow groove welding. The method is particularly suitable for fabrication on site of large pressure vessels used in nuclear reactors.
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