Axial stress reduction in reactor pressure vessels - by the use of axial tensioning cables

摘要

Nuclear reactor pressure vessel particularly for a pressure water reactor constructed from individual steel rings welded together by circular weld seams, in which the axial tensile stream present during operation under the working pressure amts. at most to 20% of the yield point of the steel used, and more esp. is reduced by means of tie cables connected to the cover flange and the bottom of the vessel. Reduction in overall cost of the pressure vessel by a radial departure from the dimensions of known pressure vessels.