Radiant energy – Fluent material containment – support or transfer means – With irradiating source or radiating fluent material
Patent
1974-10-10
1976-04-27
Willis, Davis L.
Radiant energy
Fluent material containment, support or transfer means
With irradiating source or radiating fluent material
250435, G01N 2312
Patent
active
039537374
ABSTRACT:
The radioactivity of flowing water carrying very low concentrations of radioactive nuclides, is continuously monitored by passing the flowing water through a filter means to form an increasing collection of the nuclides, which collection is continuously monitored by a radioactivity detector producing pulses at an increasing rate dependent on the radioactivity of the collection. The pulses are fed to a pulse counter having an alarm activated by a pulse counter of adjustable count limit, and this limit is adjusted upward as the collection increases with time and in proportion to the time duration of the filtering and collecting. Therefore, the alarm is not activated if the concentration of the nuclides in the flowing water remains within the predetermined value; but if this value is exceeded, the alarm is activated.
REFERENCES:
patent: 3178355 (1965-04-01), Jacobs
patent: 3846749 (1974-11-01), Curry
patent: 3864574 (1975-02-01), Wilhelm et al.
Fuchs Armin
Neeb Karl-Heinz
Stockert Heinz
Kraftwerk Union Aktiengesellschaft
Willis Davis L.
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