Importance

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Abstract

In a method for inspecting a dished end face of a nuclear fuel pellet, a focused beam of light is emitted to a dish of the end face of the nuclear fuel pellet while a parallel beam of light is being emitted to the end face thereof. An image of the end face of the nuclear fuel pellet is picked up and the quality of the pellet is judged based on the picked-up image. An apparatus for inspecting a dished end face of a nuclear fuel pellet is also disclosed. The inspection apparatus includes a handling unit for holding the pellet during inspection, a lighting unit for lighting the end face of the pellet, an image pick-up unit disposed adjacent to the handling unit for picking up image data as to the end face of the pellet, and a judging unit operably connected to the image pick-up unit for analyzing the image data outputted from the image pick-up unit to judge quality of the nuclear fuel pellet. The lighting unit includes emitting optical systems for emitting a focused beam of light to a dish of the end face of the pellet while emitting a parallel beam of light to the entire end face of the pellet.

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First Claim