Handling and Confinement Hood, Application to Handling Holders of Samples of Nuclear Materials Such as Nuclear Fuels

摘要

The present invention concerns a hood for handling and confinement of at least two objects of slender shape, including an external enclosure and internal enclosures inside the external enclosure and at least one motor fixed above an internal enclosure and inside a barrel, the motor(s) being adapted to rotate the screw of the screw-nut mechanism of each internal enclosure and therefore the nut over a stroke A, and first and second mechanical control means, arranged in part above the cover of the external enclosure, respectively for manually guiding the internal enclosures in translation over a stroke A0 and manually pivoting the barrel in order to bring a holding member of one of the internal enclosures opposite the opening in the bottom of the external enclosure. Application to the handling and confinement of nuclear material sample holders.

主权项

1. A hood for confinement and handling of at least two objects of slender shape comprising:
an external first enclosure extending along a longitudinal axis X′, comprising a cover, a bottom provided with an opening and a valve for blocking the opening and thereby sealing the external enclosure during use; a second enclosure forming a barrel, extending along the axis X′ and guided in rotation about the axis X′ inside the external enclosure during use; and at least one internal third enclosure and one internal fourth enclosure each extending along a longitudinal axis X1, X2 parallel to the axis X′ and each adapted to accommodate an object of elongate shape during use, the at least two internal enclosures being fastened to each other and guided in translation in the barrel over a stroke A0; each internal enclosure comprising within it:
a holding member adapted to pick up an object of elongate shape during use;a screw-nut mechanism comprising a lead screw guided in rotation about the axis X1, X2 and a nut around the screw and to which the holding member is fastened, the mechanism being adapted to guide the latter in translation in the internal enclosure over a stroke A greater than the stroke A0 during use; anda bottom comprising an opening opposite the holding member to allow an object picked up thereby to pass through during use;the hood further comprising:
at least one motor fixed above an internal enclosure and inside the barrel, the at least one motor being adapted to rotate the screw of the screw-nut mechanism of each internal enclosure and therefore the nut over the stroke A during use; a mechanical control arranged in part above the cover of the external enclosure for manually guiding the internal enclosures in translation over the stroke A0 during use; and a mechanical control arranged in part above the cover of the external enclosure for manually pivoting the barrel in order to bring a holding member of one of the internal enclosures opposite the opening in the bottom of the external enclosure during use.