Abstract: A method for forming aggregates of food pieces by arranging a plurality of food pieces such that the food pieces at least partially overlap one another is provided. The method automatically changes the number of food pieces forming each aggregate and a pitch at which the food pieces are arranged so as to limit the weights of the aggregates within a predetermined permissible range and to form each aggregate such that the total length of the aggregate is a preset length. The method also automatically changes the number of food pieces forming each aggregate and the pitch at which the food pieces are arranged according to the length of the food piece in the arrangement direction.

Abstract: A reactor start-up monitoring system, comprising: a determination apparatus for determining that moderator temperature reactivity coefficient is positive based on neutron flux measured by a neutron detector and a reactor water temperature measured by a temperature detection apparatus; an output information creating apparatus for creating first output information indicating positive moderator temperature reactivity coefficient when determination information inputted from the determination apparatus indicates the positive moderator temperature reactivity coefficient; and at least one of a display apparatus and an audio output apparatus for inputting the first output information.