Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Optics
Patent
1994-03-10
1996-06-25
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Optics
376253, 376259, 376249, 376260, G21C 1700
Patent
active
055307280
ABSTRACT:
The length of an object, particularly a spent fuel rod, is measured by taking an optical image of a support surface and then taking an optical image of a fuel rod when placed on the support surface. The two optical images are digitised, stored and then processed to obtain a difference in grey level values between the two stored images. The two images are stored as a plurality of columns each containing pixels having a grey level value. Using an algorithm, the difference between these values in corresponding columns of the two images are determined as root mean square values. The columns are processed in turn to determine which have a root mean square value above a threshold value, these being representative of the presence of a fuel rod. The number of such columns is a measure of the fuel rod length.
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British Nuclear Fuels PLC
Chelliah Meena
Walsh Donald P.
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