RiskAnalysisin SociotechnicalSystem - Socio-Technical Networks - page 233

A functional model (FM) has been developed for the Maritime Transport
System in the Safety at Speed [12] project which was funded by the European
Commission. he FModel is another means of determining what factors contribute
to undesired events and possibly help to find out what aspects of it can be fixed to
improve the situation.
he objective of the Safety at Speed project was to develop a formal methodol-
ogy for designing high speed crafts safely. Fault Trees were applied to the project in
order to determine the best risk control option in designing the High Speed Craft.
he Fault Trees included hazardous scenarios that considered hazardous factors
such as collision, grounding, ire, flooding, etc.
he foundation of an FM of the Maritime Transport System was to identify
the activities that each group performed according to their roles. he activities were
then represented as a function, so the FM would signify the influence of each party
on one another as well as how the diferent activities correspond and relate. his
network of interdependence provides implication of how changes made within the
Maritime Transport System (MTS) can produce growth and affect safety.
In [5] a means is introduced of producing a comprehensive model for the study
of Risk Analysis based on Fault Tree Analysis and Bayesian Belief Network, which
incorporate human organizational factors. It differs from previous works, as it
includes the development of the model and an explanation of the comprehensive
approach, as well as those factors or variables that contribute to the overall safety
performance of the Maritime Transport System. Figure 9.4 illustrates how the
Fault Tree and Bayesian Belief Network are linked. he equation presented will be
discussed later.

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P(Ω j,k |BE k )

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Figure9.4 TheBayesianBeliefNetworkandFaultTreelinkage.(FromBayesian

BeliefNetworkapproach([paper].)