Reactor servicing platform

A nuclear reactor comprising:

• a refueling floor including a reactor vessel located within a reactor vessel cavity formed in the refueling floor;
• and
• at least one servicing platform anchored to the refueling floor, each servicing platform comprising:
• a base anchored to the refueling floor adjacent a wall of the reactor vessel cavity;
• a telescoping mast having a first section and a second section, the first section having a mounting collar at a first end of the telescoping mast, the mounting collar being rotationally attached to the base such that the telescoping mast may be cantilevered past the reactor vessel cavity wall and over the reactor vessel;
• and
• a personnel work basket pivotally coupled to the second section at a second end of the telescoping mast, wherein the first section includes a first walking surface and the second section includes a second walking surface, the first and the second sections being telescopingly mated so that the telescoping mast is extendible and retractable in a direction of the personnel work basket from the base, the first and the second walking surfaces together forming a substantially level and continuous walking surface between the personnel work basket and the base, so that personnel can walk entirely from the personnel work basket on to the base and vice versa via the walking surface.

A servicing platform for a nuclear reactor refueling floor, said servicing platform comprising:

• a base structured to be anchored to a refueling floor of a nuclear reactor adjacent a wall of a reactor vessel cavity formed in the refueling floor;
• a telescoping mast including;
• a mounting collar at a first end that is rotationally attached to the base such that the mast may be cantilevered past the reactor vessel cavity wall and over a reactor vessel located within the reactor vessel cavity, and
• a first walking surface and a second walking surface, the first and second walking surfaces extending a length of a neck portion of the mast, the neck portion extending between the mounting collar and a second end of the mast, the first and second walking surfaces together providing a substantially level and continuous walking surface for personnel to walk the entire length of the neck portion from the base to the second end of the mast and vice versa, the second walking surface being movable relative to the first walking surface in a direction in which the neck portion extends between the mounting collar and the second end of the mast;
• and
• a personnel work basket pivotally coupled to the second end of the mast for supporting personnel above the reactor vessel, the personnel work basket including four impermeable sidewalls impermeably connected to an impermeable bottom to provide a water-tight personnel work basket.