The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1976
Filed:
Apr. 25, 1974
Eberhard Michel, Nurnberg, DT;
Siemens Aktiengesellschaft, Munich, DT;
Abstract
A pressurized-water reactor installation comprises a metal pressure vessel surrounded by a concrete wall forming an annular space around the vessel so that the vessel's side wall can be inspected by instrumentation lowered within the space. To provide the vessel with rupture protection, its side wall is encircled by cylindrical segments of pressure-resistant, heat-insulating material, the segments being themselves encircled by high-tensile strength elements. These parts are proportioned so that when the reactor vessel thermally expands, the segments are placed in compression under the restraint of the high-tensile encircling elements which remain cooler than the vessel, and when the vessel is at room temperature, the segments are free from compression and can be removed to clear the annular space around the vessel's side wall and permit use of the instrumentation for the side wall inspection.