Process for cleaning a guide tube for a means of measuring the n

Details Process for cleaning a guide tube for a means of measuring the n Process for cleaning a guide tube for a means of measuring the n

1988-06-14

1989-09-19

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

G21C 1920, G21C 1710

Patent

active

048679410

ABSTRACT:
The process involves injecting water into the guide tube (6) from the instrumentation room (10) and generating suction within the guide conduit (8) from the outlet end of this conduit located level with the upper face of the core support plate (5). The suction rate Q2 is higher than the injection rate Q1, the ration of these rates being at least equal to the ratio between the inlet cross-section of the guide conduit (8) and the inner cross-section of the entry sleeve (7) of the guide tube (6). The cleaning device comprises a bell (34) in which the suction is generated and which comes to bear on the upper surface of the support plate (5) via a gasket (35).

REFERENCES:
patent: 4610838 (1986-09-01), Gasparro et al.
patent: 4720369 (1988-01-01), Cadaureille et al.
patent: 4790976 (1988-12-01), Zahn et al.

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