Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Position detection
Patent
1997-12-23
1999-03-09
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Position detection
376236, G21C 1700
Patent
active
058811184
ABSTRACT:
Changes in the value of the control element assembly position signal (26,28) are monitored over a preselected time period, and a determination is made whether these changes conform to a regular, predetermined pattern (S.sub.1), characteristic of normal control element assembly motion. If any change deviates (S.sub.2,S.sub.3) from the pattern by more than a permissible tolerance, a position invalidity signal is generated.
REFERENCES:
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patent: 4080251 (1978-03-01), Musick
patent: 4318778 (1982-03-01), Musick
patent: 4330367 (1982-05-01), Musick
patent: 5563922 (1996-10-01), Beltz et al.
Combustion Engineering Inc.
Wasil Daniel D.
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