[en] Corrosion and mechanical damage may appear on the aluminum based fuel surface during long term wet interim storage. Experience has shown that video imaging can provide information about the general structural conditions of the fuel and/or the nature or type of damage suffered. Therefore, a fuel visual inspection program by means of underwater video equipment should be set in storage facilities. This work presents a proposal of damage degree classification for MTR type spent fuel by means of the evaluation of photographic images, and the basic technical features of a visual inspection program applicable to wet interim storage, with the purpose of establishing common criteria for storage facility operators. (author)