[en] This report describes the propriety and the practicability of three-dimensional nonlinear finite element analysis for PCRV structures subjected to internal pressure by comparing calculated results with test results. Because a PCRV is composed of a number of structural materials and its configuration is very complex, it is most difficult to precisely analyze the inelastic behavior up to the ultimate load capacity. At first, therefore, a nonlinear analysis considering concerte cracking only was attempted. As a result, it was found possible to predict the behavior of a PCRV up to three times the design pressure, and calculated results agreed well with test results. (auth.)