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:
Jul. 07, 1987
Filed:
Mar. 03, 1986
Thomas R Freeman, Greensburg, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A control arrangement which provides enthalpy rise compensation upon reduction of core power includes control rodlets arranged in a cluster. Each control rod cluster has a higher axial worth at an upper portion than at a lower portion thereof. Several different embodiments of control rod clusters are provided. In one embodiment, the worth of the control rod cluster varies in accordance with different lengths of the absorber material contained within its rodlets. In another embodiment, the worth of the control rod cluster varies in accordance with different variations in densities of the absorber material within its rodlets. In a third embodiment, the worth of the control rod cluster varies in accordance with different kinds of the absorber material within the rodlets. In a final embodiment, the worth of the control rod cluster varies in accordance with different variations in diameters of the absorber material within its rodlets.