A calculated basis for the strength and failure probability of VVER containment

摘要

Basic features are presented on the calculation method for determining the strength and failure probability of aVVER containment vessel. A description is given of the computational method, which handles five related tasks: simulating the coolant convection in an accident involving the cooling water in the body of the reactor; calculating the nonstationary temperature patterns is the body; simulating the state of stress and strain in it; calculating the cracking resistance (brittle strength); and quantitative probabilistic analysis of containment failure hazard.