G - Physics – 01 – T
Patent
G - Physics
01
T
G01T 1/167 (2006.01) G01T 7/00 (2006.01) G01T 7/02 (2006.01) G21C 19/46 (2006.01)
Patent
CA 2083568
DESCRIPTIVE ABSTRACT Apparatus for measuring the .alpha. activity of a solution and used for determining the plutonium concentration of a solution sampled from an irradiated nuclear fuel reprocessing installation and which comprises a rotary drum (20), which samples a film of solution in a vessel (20), in order to place it in front of a measuring probe (22). Between the probe (22) and the drum (20) is positioned a sealing disk (40) having three positions, which has an effective measuring region (48), a measuring chain quality checking region and a blank measuring region. In order to avoid a solution deposit by condensation on the disk (40) or on the end of the probe (22), a protective gas injection system (49) having passages traversing the vessel cover (16), scavenges the upper face of the sealing disk at three locations corresponding to the three active regions of the latter. A substantially uniform distribution of the gas flow between said three locations is ensured. The protective gas is then sucked in by a tube (122). (fig. 1) B 10955 GP
Durand Marcel
Marteau Claude
Cogema - Compagnie Generale Des Matieres Nucleaires
Durand Marcel
Goudreau Gage Dubuc
Marteau Claude
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