THE LIMIT STATE ANALYSIS OF CONTAINMENT VESSEL UNDER ACCIDENTAL PRESSURES

The limit state analysis is proposed in this paper. The analysis takes into consideration two types of dome namely, spherical and elliptical , which am generally associated with the barrel wall. Constitutive equ ations are developed in which a provision is made for tendon geometry, loads and losses due to prestressing tendons. Stresses are computed f or the domes and the barrel wall using a specially developed program ( HAYA). A separate analysis is carried out for the discontinuity at the base of the barrel wall. Boundary conditions are adjusted so as to cr eate flexibility for the dome and wall to interact. The analysis is ap plied to both Sizewell B and Bellefonte vessels. Only Bellefonte vesse l results are reported.