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Safety and risk evaluation of Stena Baltica ferry in variable operation conditions

100%

Kołowrocki K. , Soszyńska J.

tom Vol. 2

231--240

Basic safety structures of multi-state systems of components with degrading safety states related to their variable operation conditions are defined. For these systems the conditional and unconditional multi-state safety functions are determined. A semi-markov process for the considered systems operation modelling is applied. Further, the paper offers an approach to the solution of a practically important problem of linking the multi-state systems safety models and the systems operation processes models. Theoretical definitions and results are illustrated by the example of their application in the safety and risk evaluation of the Stena Baltica ferry operating at the Baltic Sea. The ferry transportation system has been considered in varying in time operation conditions. The system safety structure and its components safety functions were changing in variable operation conditions.

Safety of multistate ageing systems

88%

Kołowrocki K. , Soszyńska-Budny J.

tom Vol. 7, No. 3

131--142

Basic notions of the ageing multistate systems safety analysis are introduced. The system components and the system multistate safety functions are defined. The mean values and variances of the multistate systems lifetimes in the safety state subsets and the mean values of their lifetimes in the particular safety states are defined. The multi-state system risk function and the moment of exceeding by the system the critical safety state are introduced. The exemplary safety structures of the multistate systems with ageing components are defined and their safety functions are determined. As a particular case, the safety functions of the considered multistate systems composed of components having exponential safety functions are determined. Applications of the proposed multistate system safety models to the evaluation and prediction of the safty characteristics of the oil piping transportation system is presented as well.

Formułowanie wymagań dotyczących wyposażenia bezpieczeństwa wykorzystującego technikę RFID

63%

Strawiński T.

tom R. 18, nr 4

86--91

W celu uzyskania możliwości implementacji funkcji bezpieczeństwa zgodnie z wymaganiami zasadniczymi dyrektywy 2006/42/WE niezbędne jest określenie wymagań dotyczących wyposażenia bezpieczeństwa wykorzystującego technikę RFID. Wymagania te powinny zmierzać w kierunku zapewnienia spełnienia wymagań zasadniczych w sposób dotyczący elementów bezpieczeństwa wymienionych w ich orientacyjnym wykazie (załącznik V do dyrektywy 2006/42/WE).

In case of intention to implement safety function according the essential requirements of directive 2006/42/WE, the safety equipment which applies the RFID technology shall satisfy the suitable particular requirements. These requirements directed be directed on the essential requirements of safety elements listed in Annex V do directive 2006/42/WE. (Preparation of Papers for VIII Symposium of Paragraf 34 – The setting of requirements for safety equipment using RFID technology).