Frequencies assessment of loss containments including the effects of measures of risk prevention and mitigation

The question of how the effects of management and organisational variables can be incorporated into assessment of frequency of loss containment events is currently of considerable interest. Usually these typology of events arises from an uncontrolled accidental phenomena or a combination of active and latent human errors in areas such as design, operations and maintenance. In the 2006 a development of a methodology for the quantification of the effects of measures of risk prevention or mitigation on the frequencies of rupture of pipework has been presented, the approach is based on the methodology proposed by Papazoglou in 1999. Taking advantage of Papazoglou methodology the estimation of these effects has been achieved through the definition of the links between the failure causes that are the origin of incidents and the measures adopted by the company in order to prevent and/or to mitigate them. After an overview on the failure causes in piping, the aim of this paper is to present the application of the recent modified methodology