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. 29, 2008
Filed:
Jul. 10, 2006
Joseph R. Wyatt, Lynchburg, VA (US);
John Griffith, Lynchburg, VA (US);
Victor Newman, Forest, VA (US);
Jeffrey M. Fleck, Forest, VA (US);
Joseph R. Wyatt, Lynchburg, VA (US);
John Griffith, Lynchburg, VA (US);
Victor Newman, Forest, VA (US);
Jeffrey M. Fleck, Forest, VA (US);
Areva NP, Inc., Lynchburg, VA (US);
Abstract
A method to determine deposits in a steam generator having the steps of creating a calibration standard having at least two rings of deposit material, subjecting the calibration standard to an eddy current signal, wherein an amplitude of the signal reflected from the calibration standard is used to obtain a polynomial equation fit of the reflected eddy current signals to actual thickness of the rings, obtaining a steam generator with tubes, initiating an eddy current signal into the tubes of the steam generator, detecting and recording reflections of the eddy current signal initiated into the tubes of the steam generator, and determining a thickness of the deposits in the steam generator from the recorded reflections of the eddy current signal and the polynomial equation.