Device for inspecting a fuel rod assembly in the pool of a nuclear plant and corresponding inspection method

摘要

The invention relates to a device for inspecting a fuel assembly in the pool of a nuclear plant, that comprises an image sensor with an observation field, and further comprising a boom with at least one removable fastener to the assembly, a reference graduation extending along an axis parallel to a longitudinal axis of the assembly, so that the image sensor can monitor within its field both the boom and the assembly. The device is designed so that the boom can be removably attached to the fuel assembly when the latter is suspended outside the pool by the hook of the machine for handling the fuel assemblies. The invention also relates to a corresponding method.

主权项

1. A device for inspecting a fuel assembly containing a plurality of fuel rods in a pool of a nuclear plant equipped with a grapnel for displacing and suspending the assembly in the pool, comprising:
a moveable image sensor including a field of observation, and a boom including a reference graduation extending along an axis parallel to a longitudinal axis of a fuel assembly containing a plurality of fuel rods, so that upon suspending the fuel assembly in the pool by the grapnel, the image sensor may observe in its field both the boom and the assembly, and the boom hangs in the pool beside the fuel assembly so as not to occupy the bottom of the pool, removable fastening means for fastening the boom on the assembly so as to maintain the assembly at a stationary position, wherein the assembly is supported and suspended in the pool by the grapnel at a stationary position while the image sensor is moving.