JP2829204B

PURPOSE:To enhance the reliability of collecting operations for controlling elements by preventing the controlling elements from clogging the inlet of a collecting pipe. CONSTITUTION:A controlling-element collecting device includes a recycling pipe 22b having a recycling portion 24b which sucks heli...

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Bibliographic Details
Main Author IKEDA TATSUMI
Format Patent
LanguageEnglish
Published 25.11.1998
Edition6
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:PURPOSE:To enhance the reliability of collecting operations for controlling elements by preventing the controlling elements from clogging the inlet of a collecting pipe. CONSTITUTION:A controlling-element collecting device includes a recycling pipe 22b having a recycling portion 24b which sucks helium gas in a core 2 by creating negative pressure using a blower or the like and sucks and collects controlling elements 14 in a controlling-element collecting pipe 19 by means of the flow of the helium gas and a suction nozzle 23b suspended from the lower end of the collecting portion 24b, and a winch 25 installed above the collecting portion 24b to drive the collecting pipe 22b in the vertical direction, the collecting pipe 22b having an optimum bore so that the controlling elements 14 sucked do not clog it.
Bibliography:Application Number: JP19920290993