초록 ▼

An improved core servicing apparatus for a nuclear reactor having a vessel, a head for the vessel, one or more penetration openings in the head and a core within the vessel of the type having an array of fuel assemblies and including apertures in the array for neutron absorbers. The servicing appara

An improved core servicing apparatus for a nuclear reactor having a vessel, a head for the vessel, one or more penetration openings in the head and a core within the vessel of the type having an array of fuel assemblies and including apertures in the array for neutron absorbers. The servicing apparatus includes a support column adapted to be supported by and depend from the head in registry with a penetration opening; a plurality of core servicing elements which may include neutron absorber actuating means and/or instrument packages are supported by the support column; and means are provided for laterally displacing at least some of the servicing elements relative to the support column between a laterally compact and a laterally expanded configuration. In one embodiment, instruments may be located at the lower end of long resilient cables and are longitudinally movable within and beyond guide channels supported by the support column. The guide channels are directed outward at their lower ends to direct a descending instrument and cable outwardly.

대표청구항 ▼

An improved core servicing apparatus for a nuclear reactor having a vessel, a head for said vessel, a penetration opening in said head and a core within said vessel of the type having an array of elongated assemblies the improvement comprising: a. a support column adapted to be supported by and depe

An improved core servicing apparatus for a nuclear reactor having a vessel, a head for said vessel, a penetration opening in said head and a core within said vessel of the type having an array of elongated assemblies the improvement comprising: a. a support column adapted to be supported by and depend from said head in registry with said penetration; b. a plurality of core servicing elements supported by said support column; and c. means for laterally displacing at least some of said elements between retracted and extended positions relative to said support column, whereby to vary said servicing apparatus between a laterally compact and a laterally expanded configuration, said laterally displaceable elements each including an elongated resilient drive cable extending upwardly therefrom and said lateral displacement means including a guide channel means for each of said elements and associated drive cables, said guide channel means being supported by said support column and extending generally vertically and being directed laterally outward at its lower end, said drive cables being longitudinally movable to move said elements between a position in said channel means and a position laterally outward thereof beyond said lower end.