Eddy current for the characterization of broached tube support plate blockage

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United States of America Patent

PATENT NO 8527216
APP PUB NO 20110022333A1
SERIAL NO

12702142

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
AREVA NP INC3315 OLD FOREST ROAD LYNCHBURG VA 24501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fleck, Jeffrey M Forest, US 5 16
Griffith, John C Lynchburg, US 9 86
Pop, Mihai G M Lynchburg, US 27 79
Wyatt, Joseph R Lynchburg, US 5 15

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