Eddy current for the characterization of broached tube support plate blockage
US8527216B2 · kind B2 · utility
1Cited by
5References
25Claims
0Family size
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Key dates
| Filing date | Feb 8, 2010 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | May 14, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B37/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining tube support plate blockage of a steam generator includes the following steps: measuring at least five different eddy current values per tube support intersection; calculating a nominal clean fit radius of flow hole; determining a center signal response; converting the center signal response to a deposit thickness; determine an edge reduction; converting the edge reduction to an edge thickness; calculating the resulting flow hole radius; verifying the reasonableness of the resulting flow hole radius; and determining a virtual calibration range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.