Effect of the variation of properties on the working capacity of GR-280 reactor graphite

Data on the variance of the properties of GR-280 block reactor graphite are presented. The effect of the variance on the radiation-induced change in the properties, including on the characteristics of the shape change, is presented. In view of this, the working capacity of graphite is analyzed for masonry blocks of a uranium-graphite reactor, 2 figures, 4 tables, 20 references. Translated from Atomnaya énergiya, Vol. 88, No. 2, pp. 119–125, February, 2000.