Accounting for Safety Barriers Degradation in the Risk Assessment of Oil and Gas Systems by Multistate Bayesian Networks. - Francesco Di Maio; Oscar Scapinello; Enrico Zio; Costanza Ciarapica; Salvatore Cincotta; Anna Crivellari; Luca Decarli; Laura Larosa (Reliab. Eng. Syst. Saf., 2021)