Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Position detection
Patent
1996-09-27
1998-05-19
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Position detection
G21C 1706
Patent
active
057546118
ABSTRACT:
An eddy-current probe (10) is moved in the axial direction of the clad of the rod (1), a first position of the probe (10) is determined in the axial direction, for which a signal from the probe is representative of the presence of the internal surface of the bottom end plug of the rod (1) and at least one second position for which the signal from the probe is representative of the presence of the end part of the spring of the fuel rod (1) or of the internal surface of the top end plug of the fuel rod (1). The total length and/or the length of the fissile stack are calculated from the first position and from the second position of the probe (10). The measurements may be performed inside the spent fuel storage pond of a reactor.
REFERENCES:
patent: 3967382 (1976-07-01), Johnson et al.
patent: 4195411 (1980-04-01), Gerkey
patent: 4728483 (1988-03-01), Ahmed et al.
patent: 4741878 (1988-05-01), Gebelin et al.
Patent Abstracts of Japan, vol. 12, No. 226, Jun. 28, 1988, JP63019502.
Patent Abstracts of Japan, vol. 12, No. 226, Jun. 28, 1988, JP63019504.
Cogema
Framatome
Wasil Daniel D.
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