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:
Sep. 08, 2026
Filed:
Feb. 03, 2022
Framatome Inc., Lynchburg, VA (US);
Greg Troyer, Lynchburg, VA (US);
Todd Matthews, Lynchburg, VA (US);
Pavan Thallapragada, Lynchburg, VA (US);
Abstract
A probabilistic method for determining an operability interval for fasteners in a nuclear power plant assembly includes providing a geometric distribution of a given initial condition of fasteners in the nuclear power plant assembly at an initial time T0; generating a plurality of random future fastener failure patterns by applying a fastener failure probability model to the geometric distribution at a given time T1>T0; inputting the plurality of random future fastener failure patterns at time T1 into a machine learning model and outputting stresses of the fasteners and displacements of the components; iterating, by a processor of a computer, the applying and inputting steps for a given range of time values T2, T3, . . . , Tx>T0 and determining a maximum future time Tmax at which a predetermined acceptable probability of the fastener failure patterns having acceptable values of the stresses of the fasteners and displacements of the components, thereby justifying the acceptability of the fasteners for continued operation of the nuclear power plant assembly; and determining the operability interval as being the maximum future time Tmax minus the initial time T0.