PURPOSE: To sharply project the image of fuel by a submerged television camera on the picture of a monitor television, by bringing the surface of a metal member forming a movable stand to a non-gloss surface.
CONSTITUTION: The surfaces of the parts entering the visual field of a submerged television camera 7 at the time of the photographing of the fuel bundle among the metal parts constituting the movable stand 5 of a fuel channel mounting and detaching machine, for example, a support 5a, a connection plate 5b and a substrate 5c are brought to non-gloss surfaces by liquid honing process. By this method, when the outer surface of the fuel bundle 1b illuminated by an illuminator 6 is photographed by the submerged television camera 7 while the movable stand 5 is gradually raised, the generation of halation can be prevented and a sharp image can be projected on the picture of a monitor television.
TSUJI TADASHI
KAGAYA TORU
