Method of controlling the reactivity of a gas-cooled core reactor

摘要

A method of controlling the reactivity of a gas-cooled core reactor the core of which consists of a pile of poured balls of equal diameter of fuel material which are withdrawn from the pile in downward direction and, if desired, are again added from above in conformity with the extent to which the pile of fuel balls has burned off. The method is characterized primarily in that balls which consist of absorbing material and have a diameter shorter than the diameter D of the balls of fuel material are introduced into the poured pile, the diameter dA of the balls of absorbing material being dZ